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Rare Plant Committee Holy Fire Botany, Santa Ana Mountains

Rare Plant Committee Holy Fire Botany, Santa Ana Mountains

Rare Committee Holy Fire Botany,

On August 6, 2018, a ignited in Trabuco Canyon, in the Santa Ana Mountains (SAMs) of Orange and Riverside Counties. The blaze burned 23,136 acres, destroyed 18 buildings, and forced the evacuation of thousands of residents. Botanically, this fire was a significant event as much of the forest had not burned for 31 to 64 years or longer1. The blaze was fully contained on September 13, 2018. Shortly afterward, the Rare Plant Committee of the Native Plant Society, Orange County chapter (OCCNPS) petitioned the U.S. Forest Service, Cleveland National Forest, for access permission and collection permits. After several weeks and a government shutdown, we were granted those permissions.

The OCCNPS Holy Fire botanical principal survey team: Ron Vanderhoff (OCCNPS Rare Plant Committee) Michael Simpson (SDSU, retired) Fred Roberts (OCCNPS Rare Plant Committee) Rebecca Crowe (UCI) Bob Allen (OCCNPS Rare Plant Committee) James Bailey (Independent) Jonathan Frank (Independent)

A few other participants joined on individual surveys, incl. Aaron Echols, Emile Fiesler. Keith Wayne Garcia, Joe Gautsch, Hailey Laskey, Mathew Major, Carl Mautner, Arlee Montalvo and Jillian Stephens.

Our objectives within the burn area: 1. To obtain vouchers (plant collections) in an under-documented region of the Santa Ana Mountains, with specimens deposited at the following registered herbaria2: Rancho Santa Ana Botanic Garden (RSA), State University (SDSU), University of California Irvine (IRVC), and University of California Riverside (UCR). 2. To document often unique post-fire plant that are otherwise absent. 3. To review the status of Phacelia keckii (Santiago Peak phacelia), a rare plant and near Santa Ana Mountains endemic, with only sporadic records and a poorly understood natural history. 4. Review the burn response of several narrowly distributed or rare plant species, especially those assigned a California Rare Plant Rank (CRPR, see https://www.cnps.org/rare-plants/cnps-rare-plant-ranks) 5. Examine the status and response of spp. () within the burn area. 6. Assess non-native invasive plant intrusion and expansion in the burn area and document occurrences of ecological concern. 7. Conduct general botanical explorations to record important species and assess general forest recovery.

1 Herbaria are registered with the Index Herbariorum, assigned an acronym, and listed on their website at http://sweetgum.nybg.org/science/ih 2 Herbaria are registered with the Index Herbariorum, assigned an acronym, and listed on their website at http://sweetgum.nybg.org/science/ih

Survey details As of this writing, our team effort includes approximately 35 trips into the burn area. Our surveys visited essentially all vegetation types present within the burn area and ranged between 412 (1,351.7 feet) and 1,651 meters (5,416.7 feet) in elevation. The survey teams totaled approximately 200+ field hours. The OCCNPS team, all volunteers, worked tirelessly surveying the burn scar. Nearly all of the watersheds within the burn were visited at least once and many a few times. Surveys were conducted on burned ridges, slopes, canyons, and peaks. We also visited areas outside of the physical burn, but impacted by the fire. These included roadsides, debris flows, fire breaks, dozer lines, and staging areas.

Our efforts have resulted in several plant records of significance as well as a general understanding of the burns’ impact to the flora of the area and its recovery.

Some of the locations visited were (see figures 1 and 2):

Coldwater Canyon Rice Canyon Modjeska Peak Mayhew Canyon McVicker Canyon Flanks of Santiago Peak Indian Canyon Trabuco Canyon Los Pinos Ridge Horsethief Canyon Holy Jim Canyon Indian Truck Trail Main Divide Road and many of its side canyons

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FIGURE 1. Several (not all) of the tracks from the Holy Fire botanical surveys, 2019.

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FIGURE 2. Calflora datapoints from some (not all) of the Holy Fire botanical surveys, 2019. Burn outline in pink.

Results: Our survey team documented 1,443 individual plant records, covering 385+ unique plant taxa. Approximately 110 of these records were non-native species. 294 plant specimens were taken under USFS permit. The vouchers have been or will be deposited in the following registered herbaria: Rancho Santa Ana Botanic Garden (RSA) San Diego State University (SDSU) UC Irvine (IRVC) UC Riverside (UCR) Santa Barbara Botanic Garden (SBBG)

Most of these specimen collections have not yet been processed by the herbaria. Once they are, they will appear on the websites of the Consortium of California Herbaria (CCH1 http://ucjeps.berkeley.edu/consortium and CCH2 http://cch2.org/portal). As part of this effort, we also established a Project with Calflora, called “Holy Fire”, accessed from https://www.calflora.org/entry/observ.html#srch=t&loc=holy+fire.

We encourage anyone reading this report to reference our individual records via the CCH1, CCH2 and Calflora websites. Each plant record is geo-referenced and most with full details of abundance, number of , distribution, habitat, phenology, the species response/recovery to the burn, herbarium information, and general notes. In the case of Calflora records, these observations are also documented with identifying photographs.

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Floristic highlights:

Our survey results include one new regional native plant species occurrence, two new native plant species to the Santa Ana Mountains, and five new native plant species to Orange County.

 An species in the upper reaches of Long Canyon in Orange County is still under review by taxonomists but appears to be E. inconspicua (Small-flowered monkeyflower, CRPR 3), essentially a Sierran species. The nearest other occurrence of this species is from The , Kern County.  Erythranthe diffusa (Palomar monkeyflower, CRPR 4.3) is another monkeyflower species of limited occurrence that was detected in the burn area.  A third rare monkeyflower, rattanii (Rattan’s monkeyflower), was detected on and near a dozer line within the burn area. This is the third record of the species for the Santa Ana Mountains and the first since 1935.  Phacelia keckii (Santiago Peak phacelia, CRPR 1B.3), a focus of our study, was so common in places that we had trouble not stepping on it. Tens of thousands of plants were found. After being nearly absent in recent years, and even then only seen in quite small numbers, we documented thousands at various locations both in and out of the burn scar (from washdowns?).  The menziesii (pacific madrone) colony in Upper Trabuco Canyon is one of the most southerly of the species. The entire colony was burned with essentially no branch survival. However, basal resprouting was apparent during a late April visit.  The only known individual of ssp. drupacea (pink-bracted ) from the Santa Ana Mountains was re-visited by the team. It was previously documented by Ron Vanderhoff and Bob Allen on April 12, 2014. It is located northeast of Santiago Peak, near the upper trailhead for Coldwater Canyon Trail. During the Holy Fire, it was burned to its burl, but was observed resprouting during a visit on June 9, 2019.  A small southernmost colony of the regionally rare Ceanothus papillosus (wartleaf ceanothus) growing on a ridge below Los Pinos Peak was nearly lost. One surviving individual was relocated. This is not a stump-sprouting species, so searching for seedling germination in the area of the colony should be a priority during 2020 surveys.  A possible first Orange County record of ssp. diffusa (Southern bluecup) was collected.  Possible first records for the Santa Ana Mountains were made of Mentzelia albicaulis (white stem blazing star).  The two principal of the Santa Ana Mountains, macrocarpa (big-cone Douglas-fir) and Pinus coulteri (Coulter pine), were heavily impacted. Nearly all colonies and plants within the burn were killed. In the lower intensity/heat areas, branch re-sprouting was seen, but this was a small minority of the plants. Fortunately, heavy seedling germination was observed in the Pinus coulteri colonies, especially those near the upper reaches of Trabuco and Mayhew Canyons. germination of Pseudotsuga macrocarpa was not observed.

Rare and sensitive species highlights to date: (Madrone) Near southern extreme of range, basal sprouting Arctostaphylos pringlei ssp. drupacea (Manzanita) Regionally rare, a single SAMs plant, basal sprouting Bromus grandis (Grass) Regionally rare Bromus pseudolaevipes (Grass) 3rd SAMs record Calandrinia breweri (Annual) CRPR 4.2, new region in the SAMs Calochortus albus (Lily) Regionally uncommon Calochortus invenustus (Lily) Regionally rare disjunct population Ceanothus papillosus (Ceanothus) Regionally rare, southern disjunct population Cystopteris fragilis (Fern) Regionally rare, 3rd OC/SAMs record Diplacus clevelandii (Monkeyflower) Forest Sensitive Species, CRPR 4.2 Diplacus rattanii (Monkeyflower) 3rd SAMs record (prior 1935), southern extreme Epipactis gigantea (Orchid) Regionally uncommon Erythranthe cf. inconspicua (Monkeyflower) Probably this taxon, still under review, disjunct pop. 5 Erythranthe diffusa (Monkeyflower) CRPR 4.3, OC record Githopsis diffusa ssp. diffusa (Annual) OC record, regionally rare Lepechinia cardiophyla (Pitcher Sage) CRPR 1B.2 Lilium humboldtii ssp. ocellatum (Lily) CRPR 4.2, often in isolated colonies clevelandii (Annual) Not yet recorded in OC; 30 ft into in Riv. Co. Mentzelia albicaulis (Annual) OC and SAMs record hypoleuca ssp. intermedia (Perennial) CRPR 1B.3 Phacelia keckii (Annual) CRPR 1B.3, 1000’s at many locations Piperia cooperi (Orchid) CRPR 4.2 Piperia elongata (Orchid) Regionally rare Romneya coulteri (Matilija poppy) CRPR 4.2 Silene lemmonii (Perennial) Regionally rare Viola sheltonii (Violet) Regionally rare, southern extreme of range

Non-native invasive plant species: Another objective of our surveys was to detect occurrences of important non-native invasive plant species in the burn and adjacent areas, including species new to the area as well as expansions of those previously documented. The first year following a burn only provides partial information about these intrusions. Additional surveys in years two and three will provide a better assessment. Most significant to the survey teams were numerous individuals of Oncosiphon piluliferum (Stinknet). This is a rapidly expanding and problematic annual weed in the adjacent Temescal, Elsinore, and Perris Valleys, but prior to these surveys, with few detections in the Santa Ana Mountains. Numerous plants were located, scattered across the burned hillsides. In almost all cases, these were individual plants and presumed to be pioneers that will set seed and initiate a larger infestation very quickly. A first Orange County record for Bromus arenarius (Australian chess grass) was recorded. Rather large and dense populations of Lysimachia arvensis (scarlet pimpernel), Trifolium hirtum (rose clover), and Vicia villosa (hairy vetch) were worrisome. Scattered occurrences of other invasive plants were detected and can be seen in the Calflora documentation, but none of which were especially surprising. Additional limited occurrences were found of USFS priority weeds: Centaurea solstitialis (yellow star thistle), Cortaderia selloana (pampas grass), and Tamarix ramosissima (saltcedar tamarisk). As expected, many species of Mediterranean annual grasses, mustards, filarees and others were common, especially along many roadsides.

Summary: Orange County CNPS has long had a strong interest in the status, distribution and conservation of the native plants of the Santa Ana Mountains. This interest includes rare and sensitive species, regionally rare species, and those species at the edges of their ranges, as well as invasive species. In an era of rapid climate change, increased wildfire pressure, growing urban intrusion, and other threats, the health of these wildlands and the plants they support is of utmost importance. Fortunately, the participating team members collectively have a long and expert knowledge of many of these species, their specific locations in the burn area, and their pre-burn abundance. This knowledge, gained over decades, is of considerable value in post-fire surveys. Botanically, the vegetation in the forest is already well along in its recovery. Unusual, sustained and above average rainfall, well into May has greatly assisting this recovery. As documented above, several important botanical finds were archived and will add to the scientific knowledge base of the flora of this biologically important area.

6 The plant records contained here, along with the accompanying table and that supplied to the accredited herbaria will supplement the comprehensive references The Vascular Plants of Orange County and The Vascular Plants of Western Riverside County by author and survey team member Fred M. Roberts. Each of these references serves as the current flora of these regions. We hope that this information, combined with the BAER report provided by the Rancho Santa Ana Botanic Garden team, are helpful to the USFS Cleveland National Forest. Year two and three of the forests’ recovery will add additional critical data. The Rare Plant Committee of the California Native Plant Society – Orange County Chapter thanks US Forest Service, Cleveland National Forest biologists Jennifer Moore and Kirsten Winters and Forest Supervisor William Metz for their support of this project. We wish to continue to assist the Cleveland National Forest, Trabuco District, in this and other needs, especially by conducting additional burn area surveys in the coming year and reporting those results in a similar clear, accurate, and informative manner.

7 Collections (complete details in attached file):

Family Scientific Name Recorded By Assoc. Collectors Date Herb. Dryopteridaceae Dryopteris arguta Rebecca E. Crowe Michael G. Simpson, Ron Vanderhoff, 05/02/19 IRVC Joe Gautsch, Emile Fiesler

Dryopteridaceae Dryopteris arguta Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Dryopteridaceae Polystichum imbricans Rebecca E. Crowe Ron Vanderhoff 05/02/19 IRVC

Dryopteridaceae Polystichum imbricans subsp. F.M. Roberts R.E. Crowe, R.L. Allen 06/17/19 RSA curtum Pteridaceae Pellaea andromedifolia Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Pteridaceae Pellaea mucronata var. Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC mucronata Bailey, Jillian Stephens Pteridaceae Pentagramma triangularis Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Selaginellaceae Selaginella bigelovii Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Apiaceae Apiaceae Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Apiaceae Lomatium Rebecca E. Crowe 05/11/19 IRVC Apiaceae Lomatium lucidum Michael G. Simpson Ron Vanderhoff, Rebecca Crowe, Joe 05/02/19 SDSU Gautsch, Emile Fiesler Apiaceae Lomatium lucidum Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Apiaceae Sanicula Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Apiaceae Sanicula tuberosa F.M. Roberts 05/04/19 RSA Apiaceae Sanicula tuberosa Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Apiaceae Tauschia arguta Michael G. Simpson Rebecca Crowe, Fred Roberts, Robert 06/22/19 SDSU Allen Apiaceae Tauschia arguta Michael G. Simpson Rebecca Crowe, Fred Roberts, Robert 06/22/19 SDSU Allen Agoseris Rebecca E. Crowe Robert L. Allen, Fred M. Roberts 06/17/19 IRVC Asteraceae Centaurea melitensis Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Asteraceae Chaenactis artemisiifolia Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Asteraceae Chaenactis artemisiifolia Rebecca E. Crowe Michael G. Simpson, Robert L. Allen 06/22/19 IRVC

Asteraceae Cirsium Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Asteraceae Erigeron foliosus Rebecca E. Crowe 06/22/19 IRVC Asteraceae Eriophyllum confertiflorum Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Asteraceae Eriophyllum confertiflorum Rebecca E. Crowe 06/22/19 IRVC Asteraceae Gamochaeta Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Asteraceae Helianthus gracilentus Michael G. Simpson Rebecca Crowe, Fred Roberts, Robert 06/22/19 IRVC Allen Asteraceae Lactuca Rebecca E. Crowe 06/22/19 IRVC Asteraceae Lactuca serriola Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens

8 Family Scientific Name Recorded By Assoc. Collectors Date Herb. Asteraceae Logfia Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Asteraceae Madia Rebecca E. Crowe Robert L. Allen, Fred M. Roberts 06/19/19 IRVC Asteraceae Madia gracilis Rebecca E. Crowe Ron Vanderhoff, Robert L. Allen, 05/11/19 IRVC Jonathan Frank Asteraceae Oncosiphon piluliferum F.M. Roberts 04/19/19 RSA Asteraceae Oncosiphon piluliferum Rebecca E. Crowe Ron Vanderhoff, Robert L. Allen, 05/11/19 IRVC Jonathan Frank Asteraceae Rafinesquia californica Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Asteraceae Rafinesquia californica F.M. Roberts R.E. Crowe, R.L. Allen 06/17/19 RSA Asteraceae Senecio vulgaris Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Asteraceae Sonchus Rebecca E. Crowe 06/22/19 IRVC Asteraceae Sonchus oleraceus Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Amsinckia retrosa F.M. Roberts 05/04/19 UCR Boraginaceae Rebecca E. Crowe 06/22/19 IRVC Boraginaceae Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Boraginaceae Cryptantha clevelandii var. Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 SDSU florosa Bailey, Jillian Stephens Boraginaceae Cryptantha clevelandii var. Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC florosa James Bailey, Jillian Stephens Boraginaceae Cryptantha intermedia var. Michael G. Simpson Ron Vanderhoff, Rebecca Crowe, Joe 05/02/19 SDSU intermedia Gautsch, Emile Fiesler Boraginaceae Cryptantha intermedia var. Michael G. Simpson Rebecca Crowe, Fred Roberts, Robert 06/22/19 IRVC intermedia Allen Boraginaceae Cryptantha microstachys Michael G. Simpson Ron Vanderhoff, Rebecca Crowe, Joe 05/02/19 SDSU Gautsch, Emile Fiesler Boraginaceae Cryptantha microstachys Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Boraginaceae Cryptantha muricata var. Michael G. Simpson Ron Vanderhoff, Rebecca Crowe, Joe 05/02/19 SDSU jonesii Gautsch, Emile Fiesler Boraginaceae Cryptantha muricata var. F.M. Roberts 5/4/2019 RSA jonesii Boraginaceae Cryptantha muricata var. Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 SDSU jonesii Bailey, Jillian Stephens Boraginaceae Cryptantha muricata var. Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC jonesii Bailey, Jillian Stephens Boraginaceae Cryptantha muricata var. Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 SDSU jonesii Bailey, Jillian Stephens Boraginaceae Cryptantha muricata var. Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 SDSU jonesii Bailey, Jillian Stephens Boraginaceae Cryptantha muricata var. Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC jonesii Bailey, Jillian Stephens Boraginaceae Cryptantha muricata var. Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC jonesii Bailey, Jillian Stephens Boraginaceae Cryptantha muricata var. Michael G. Simpson Rebecca Crowe, Fred Roberts, Robert 06/22/19 SDSU jonesii Allen Boraginaceae Cryptantha muricata var. Michael G. Simpson Rebecca Crowe, Fred Roberts, Robert 06/22/19 SBBG jonesii Allen Boraginaceae Cryptantha muricata var. Michael G. Simpson Rebecca Crowe, Fred Roberts, Robert 06/22/19 SDSU jonesii Allen

9 Family Scientific Name Recorded By Assoc. Collectors Date Herb. Boraginaceae Plagiobothrys collinus var. Michael G. Simpson Ron Vanderhoff, Rebecca Crowe, Joe 05/02/19 SDSU fulvescens Gautsch, Emile Fiesler Boraginaceae Plagiobothrys collinus var. Michael G. Simpson Ron Vanderhoff, Rebecca Crowe, Joe 05/02/19 IRVC fulvescens Gautsch, Emile Fiesler Brassicaceae Barbarea orthoceras Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Brassicaceae Barbarea orthoceras Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Brassicaceae Brassica nigra Rebecca E. Crowe Michael G. Simpson, Ron Vanderhoff, 05/02/19 IRVC Joe Gautsch, Emile Fiesler

Brassicaceae Hirschfeldia incana Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Brassicaceae Sisymbrium altissimum Ron Vanderhoff James Bailey 04/28/19 IRVC Githopsis diffusa Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Campanulaceae Githopsis diffusa ssp. diffusa Ron Vanderhoff 05/30/19 IRVC

Campanulaceae Githopsis diffusa ssp. diffusa F.M. Roberts R.E. Crowe, M.G. Simpson, J. Bailey, 06/08/19 RSA J. Stephens Campanulaceae Nemacladus Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Campanulaceae Nemacladus ramosissimus F.M. Roberts R.E. Crowe, M.G. Simpson, R.L. Allen 06/22/19 RSA

Campanulaceae Triodanis biflora Ron Vanderhoff 05/08/19 IRVC

Caryophyllaceae Silene Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Caryophyllaceae Silene multinerva Michael G. Simpson Ron Vanderhoff, Rebecca Crowe, Joe 05/02/19 SDSU Gautsch, Emile Fiesler Caryophyllaceae Silene multinerva Michael G. Simpson Ron Vanderhoff, Rebecca Crowe, Joe 05/02/19 SDSU Gautsch, Emile Fiesler Caryophyllaceae Silene lemmonii Ron Vanderhoff 05/26/19 IRVC

Caryophyllaceae Silene multinerva F.M. Roberts 04/19/19 RSA

Convolvulaceae Calystegia macrostegia Rebecca E. Crowe Michael G. Simpson, Ron Vanderhoff, 05/02/19 IRVC Joe Gautsch, Emile Fiesler

Convolvulaceae Calystegia macrostegia Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Convolvulaceae Calystegia macrostegia subsp. Michael G. Simpson Ron Vanderhoff, Rebecca Crowe, Joe 05/02/19 SDSU arida Gautsch, Emile Fiesler Convolvulaceae Cuscuta subinclusa Rebecca E. Crowe Michael G. Simpson, Robert L. Allen 06/22/19 IRVC

Crassulaceae Dudleya Ron Vanderhoff 05/26/19 IRVC Crassulaceae Dudleya Ron Vanderhoff 05/26/19 IRVC Cucurbitaceae Marah macrocarpa Michael G. Simpson Ron Vanderhoff, Rebecca Crowe, Joe 05/02/19 IRVC Gautsch, Emile Fiesler Cucurbitaceae Marah macrocarpa Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Arbutus menziesii Ron Vanderhoff James Bailey 04/28/19 IRVC Ericaceae Arctostaphylos pringlei Ron Vanderhoff Bob Allen, James Bailey 06/09/19 IRVC Fabaceae Acmispon glaber var. glaber Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Fabaceae Acmispon parviflorus Ron Vanderhoff James Bailey 04/28/19 IRVC 10 Family Scientific Name Recorded By Assoc. Collectors Date Herb. Fabaceae Acmispon strigosus Rebecca E. Crowe Michael G. Simpson, Ron Vanderhoff, 05/02/19 IRVC Joe Gautsch, Emile Fiesler

Fabaceae Acmispon strigosus Michael G. Simpson Ron Vanderhoff, Rebecca Crowe, Joe 05/02/19 SDSU Gautsch, Emile Fiesler Fabaceae Acmispon strigosus Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Fabaceae Acmispon strigosus Rebecca E. Crowe Michael G. Simpson, Robert L. Allen 06/22/19 IRVC

Fabaceae Hosackia crassifolia var. Ron Vanderhoff 05/26/19 IRVC crassifolia Fabaceae Hosackia crassifolia var. Ron Vanderhoff 05/26/19 IRVC crassifolia Fabaceae Lathyrus Rebecca E. Crowe Robert L. Allen, Fred M. Roberts 06/17/19 IRVC Fabaceae Lathyrus vestitus var. vestitus Rebecca E. Crowe Michael G. Simpson, Ron Vanderhoff, 05/02/19 IRVC Joe Gautsch, Emile Fiesler

Fabaceae Lupinus Ron Vanderhoff 05/19/19 IRVC Fabaceae Lupinus bicolor Rebecca E. Crowe Ron Vanderhoff, Robert L. Allen, 05/11/19 IRVC Jonathan Frank Fabaceae Lupinus bicolor Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Fabaceae Lupinus concinnus Ron Vanderhoff Michael Simpson, Rebecca Crowe, 05/02/19 IRVC Joe Gautsch, Emile Fiesler Fabaceae Lupinus formosus Rebecca E. Crowe Michael G. Simpson, Ron Vanderhoff, 05/02/19 IRVC Joe Gautsch, Emile Fiesler

Fabaceae Lupinus hirsutissimus Rebecca E. Crowe Michael G. Simpson, Ron Vanderhoff, 05/02/19 IRVC Joe Gautsch, Emile Fiesler

Fabaceae Lupinus hirsutissimus Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Fabaceae Lupinus hirsutissimus Rebecca E. Crowe 06/22/19 IRVC Fabaceae Lupinus latifolius Ron Vanderhoff 06/06/19 IRVC Fabaceae Lupinus truncatus Ron Vanderhoff 05/19/19 IRVC Fabaceae Trifolium Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Fabaceae Trifolium ciliolatum Ron Vanderhoff 05/19/19 IRVC Fabaceae Trifolium microcephalum Ron Vanderhoff 05/19/19 IRVC Fabaceae Trifolium microcephalum Ron Vanderhoff 05/19/19 IRVC Fabaceae Trifolium microcephalum Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Fabaceae Trifolium obtusiflorum Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Fabaceae Trifolium obtusiflorum F.M. Roberts 06/13/19 RSA Fabaceae Trifolium willdenovii Rebecca E. Crowe Michael G. Simpson, Ron Vanderhoff, 05/02/19 IRVC Joe Gautsch, Emile Fiesler

Fabaceae Trifolium willdenovii Ron Vanderhoff 05/19/19 IRVC Geraniaceae Erodium cicutarium Rebecca E. Crowe Michael G. Simpson, Ron Vanderhoff, 05/02/19 IRVC Joe Gautsch, Emile Fiesler

Geraniaceae Erodium cicutarium Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Hydrophyllaceae Emmenanthe penduliflora Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC var. penduliflora James Bailey, Jillian Stephens

11 Family Scientific Name Recorded By Assoc. Collectors Date Herb. Hydrophyllaceae Nemophila Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Hydrophyllaceae Nemophila menziesii var. F.M. Roberts 05/04/19 RSA integrifolia Hydrophyllaceae Phacelia bicolor Rebecca E. Crowe Michael G. Simpson, Robert L. Allen 06/22/19 IRVC

Hydrophyllaceae Phacelia brachyloba Michael G. Simpson Ron Vanderhoff, Rebecca Crowe, Joe 05/02/19 SDSU Gautsch, Emile Fiesler Hydrophyllaceae Phacelia brachyloba F.M. Roberts 05/04/19 RSA

Hydrophyllaceae Phacelia brachyloba Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Hydrophyllaceae Phacelia brachyloba Rebecca E. Crowe Michael G. Simpson, Robert L. Allen 06/22/19 IRVC

Hydrophyllaceae Phacelia cicutaria Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Hydrophyllaceae Phacelia cicutaria Rebecca E. Crowe 06/22/19 IRVC

Hydrophyllaceae Phacelia keckii Rebecca E. Crowe Robert L. Allen, Fred M. Roberts 06/17/19 IRVC

Hydrophyllaceae Phacelia keckii F.M. Roberts R.E. Crowe, R.L. Allen 06/17/19 RSA, UCR Hydrophyllaceae Phacelia minor Rebecca E. Crowe Michael G. Simpson, Ron Vanderhoff, 05/02/19 IRVC Joe Gautsch, Emile Fiesler

Hydrophyllaceae Phacelia minor Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Monardella hypoleuca ssp. F.M. Roberts H. Laskey 07/17/19 RSA intermedia Lamiaceae apiana Rebecca E. Crowe Michael G. Simpson, Robert L. Allen 06/22/19 IRVC

Lamiaceae Salvia columbariae Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Lamiaceae Salvia columbariae Rebecca E. Crowe 06/22/19 IRVC Lamiaceae Scutellaria tuberosa Rebecca E. Crowe Ron Vanderhoff, Robert L. Allen, 05/11/19 IRVC Jonathan Frank Loasaceae Mentzelia Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Loasaceae Mentzelia Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Loasaceae Mentzelia albicaulis F.M. Roberts 06/13/19 RSA Loasaceae Mentzelia albicaulis Ron Vanderhoff 06/16/19 IRVC Loasaceae Mentzelia albicaulis F.M. Roberts H. Laskey 07/17/19 RSA Loasaceae Mentzelia micrantha F.M. Roberts 05/04/19 RSA Loasaceae Mentzelia micrantha Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Loasaceae Mentzelia micrantha Michael G. Simpson Rebecca Crowe, Fred Roberts, Robert 06/22/19 SDSU Allen Montiaceae Calandrinia breweri F.M. Roberts 04/19/19 RSA Montiaceae Calandrinia breweri Rebecca E. Crowe Ron Vanderhoff, Robert L. Allen, 05/11/19 IRVC Jonathan Frank Montiaceae Calandrinia menziesii Rebecca E. Crowe Michael G. Simpson, Ron Vanderhoff, 05/02/19 IRVC Joe Gautsch, Emile Fiesler

Montiaceae Claytonia Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens

12 Family Scientific Name Recorded By Assoc. Collectors Date Herb. Montiaceae Claytonia parviflora var. F.M. Roberts 04/19/19 RSA parviflora Montiaceae Claytonia perfoliata Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Montiaceae Claytonia perfoliata Rebecca E. Crowe 06/17/19 IRVC Myrsiniaceae Lysimachia arvensis Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Camissoniopsis Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Onagraceae Michael G. Simpson Ron Vanderhoff, Rebecca Crowe, Joe 05/02/19 SDSU Gautsch, Emile Fiesler Onagraceae Camissoniopsis hirtella Michael G. Simpson Ron Vanderhoff, Rebecca Crowe, Joe 05/02/19 SDSU Gautsch, Emile Fiesler Onagraceae Camissoniopsis hirtella F.M. Roberts 05/04/19 RSA Onagraceae Camissoniopsis hirtella Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 SDSU Bailey, Jillian Stephens Onagraceae Camissoniopsis hirtella F.M. Roberts R.E. Crowe, M.G. Simpson, J. Bailey, 06/08/19 RSA J. Stephens Onagraceae Camissoniopsis hirtella Michael G. Simpson Rebecca Crowe, Fred Roberts, Robert 06/22/19 SDSU Allen Onagraceae Camissoniopsis hirtella F.M. Roberts R.E. Crowe, M.G. Simpson, R.L. Allen 06/22/19 UCR

Onagraceae Camissoniopsis ignota Michael G. Simpson Rebecca Crowe, Fred Roberts, Robert 06/22/19 SDSU Allen Onagraceae Camissoniopsis ignota F.M. Roberts R.E. Crowe, F.M. Roberts, R.L. Allen 06/22/19 RSA Onagraceae Camissoniopsis intermedia Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Onagraceae ? F.M. Roberts R.E. Crowe, F.M. Roberts, R.L. Allen 06/22/19 UCR Onagraceae Clarkia purpurea Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Onagraceae Clarkia rhomboidea Rebecca E. Crowe Robert L. Allen, Fred M. Roberts 06/17/19 IRVC Onagraceae Clarkia rhomboidea F.M. Roberts H. Laskey 07/17/19 RSA Onagraceae Clarkia similis F.M. Roberts 05/04/19 RSA Onagraceae Clarkia similis Ron Vanderhoff 05/08/19 IRVC Onagraceae Clarkia similis Rebecca E. Crowe Ron Vanderhoff, Robert L. Allen, 05/11/19 IRVC Jonathan Frank Onagraceae Clarkia similis Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Onagraceae Epilobium minutum F.M. Roberts 06/13/19 RSA Onagraceae Eulobus californicus Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Orchidaceae Epipactis gigantea Rebecca E. Crowe Michael G. Simpson, Ron Vanderhoff, 05/02/19 IRVC Joe Gautsch, Emile Fiesler

Orobanchaceae Aphyllon tuberosum Rebecca E. Crowe Robert L. Allen, Fred M. Roberts 06/17/19 IRVC

Orobanchaceae affinis ssp. affinis Ron Vanderhoff 05/26/19 IRVC

Orobanchaceae Castilleja foliolosa Rebecca E. Crowe Michael G. Simpson, Ron Vanderhoff, 05/02/19 IRVC Joe Gautsch, Emile Fiesler

Orobanchaceae Castilleja foliolosa F.M. Roberts 06/08/19 RSA

Papaveraceae Dendromecon rigida Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens

13 Family Scientific Name Recorded By Assoc. Collectors Date Herb. Dendromecon rigida Rebecca E. Crowe Michael G. Simpson, Robert L. Allen 06/22/19 IRVC

Papaveraceae chrysantha Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Papaveraceae Ehrendorferia chrysantha Michael G. Simpson Rebecca Crowe, Fred Roberts, Robert 06/22/19 IRVC Allen Papaveraceae Ehrendorferia chrysantha F.M. Roberts R.E. Crowe, M.G. Simpson, R.L. Allen 06/22/19 RSA, UCR Papaveraceae Eschscholzia Rebecca E. Crowe 06/22/19 IRVC

Papaveraceae Eschscholzia caespitosa F.M. Roberts 04/19/19 RSA

Papaveraceae Eschscholzia caespitosa Michael G. Simpson Ron Vanderhoff, Rebecca Crowe, Joe 05/02/19 SDSU Gautsch, Emile Fiesler Papaveraceae Eschscholzia caespitosa F.M. Roberts 06/22/19 RSA

Papaveraceae Eschscholzia californica Rebecca E. Crowe Michael G. Simpson, Ron Vanderhoff, 05/02/19 IRVC Joe Gautsch, Emile Fiesler

Papaveraceae Ron Vanderhoff 05/08/19 IRVC

Papaveraceae Meconella denticulata Ron Vanderhoff 05/19/19 IRVC

Papaveraceae californicum Rebecca E. Crowe Robert L. Allen, Fred M. Roberts 06/17/19 IRVC

Papaveraceae Romneya coulteri Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Diplacus brevipes Rebecca E. Crowe Ron Vanderhoff, Robert L. Allen, 05/11/19 IRVC Jonathan Frank Phrymaceae Diplacus brevipes Ron Vanderhoff 05/19/19 IRVC Phrymaceae Diplacus brevipes Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Phrymaceae Diplacus brevipes F.M. Roberts R.E. Crowe, M.G. Simpson, J. Bailey, 06/08/19 RSA J. Stephens Phrymaceae Diplacus brevipes Rebecca E. Crowe 06/22/19 IRVC Phrymaceae Diplacus rattanii Ron Vanderhoff Bob Allen, James Bailey 06/09/19 IRVC Phrymaceae Erythranthe cf. inconspicua Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Phrymaceae Erythranthe cf. inconspicua F.M. Roberts R.E. Crowe, M.G. Simpson, J. Bailey, 06/08/19 RSA J. Stephens Phrymaceae Erythranthe cf. inconspicua F.M. Roberts 06/13/19 RSA, UCR Phrymaceae Erythranthe cf. inconspicua F.M. Roberts 06/13/19 RSA Phrymaceae Erythranthe cf. inconspicua F.M. Roberts H. Laskey 07/17/19 RSA Phrymaceae Erythranthe diffusa Rebecca E. Crowe Ron Vanderhoff, Robert L. Allen, 05/11/19 IRVC Jonathan Frank Phrymaceae Erythranthe diffusa Ron Vanderhoff 06/06/19 IRVC Phrymaceae Erythranthe diffusa Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Phrymaceae Erythranthe diffusa Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Phrymaceae Erythranthe diffusa F.M. Roberts R.E. Crowe, M.G. Simpson, J. Bailey, 06/08/19 RSA J. Stephens Phrymaceae Erythranthe floribunda Rebecca E. Crowe Michael G. Simpson, Ron Vanderhoff, 05/02/19 IRVC Joe Gautsch, Emile Fiesler

14 Family Scientific Name Recorded By Assoc. Collectors Date Herb. Phrymaceae Erythranthe floribunda F.M. Roberts 05/04/19 RSA Phrymaceae Erythranthe floribunda Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Phrymaceae Erythranthe guttata F.M. Roberts 05/04/19 RSA Phrymaceae Erythranthe guttata Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Phrymaceae Erythranthe guttata Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Phrymaceae Mimetanthe pilosa Rebecca E. Crowe Michael G. Simpson, Ron Vanderhoff, 05/02/19 IRVC Joe Gautsch, Emile Fiesler

Phrymaceae Mimetanthe pilosa Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Phyrmaceae Diplacus brevipes Michael G. Simpson Rebecca Crowe, Fred Roberts, Robert 06/22/19 SDSU Allen Plantaginaceae Antirrhinum coulterianum Ron Vanderhoff 05/19/19 IRVC

Plantaginaceae Antirrhinum coulterianum Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Plantaginaceae Antirrhinum coulterianum Rebecca E. Crowe Michael G. Simpson, Robert L. Allen 06/22/19 IRVC

Plantaginaceae Collinsia Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Plantaginaceae Collinsia parryi Ron Vanderhoff James Bailey 04/28/19 IRVC

Poaceae Avena Rebecca E. Crowe Michael G. Simpson, Robert L. Allen, 06/22/19 IRVC Fred Roberts Polemoniaceae Allophyllum glutinosum Rebecca E. Crowe Ron Vanderhoff, Robert L. Allen, 05/11/19 IRVC Jonathan Frank Polemoniaceae Allophyllum glutinosum Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 SDSU Bailey, Jillian Stephens Polemoniaceae Eriastrum sapphirinum subsp. Rebecca E. Crowe Robert L. Allen, Fred M. Roberts 06/17/19 IRVC dasyanthum Polemoniaceae Gilia capitata subsp. Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC abrotanifolia James Bailey, Jillian Stephens Polemoniaceae Gilia capitata subsp. F.M. Roberts R.E. Crowe, M.G. Simpson, R.L. Allen 06/22/19 RSA abrotanifolia Polemoniaceae Leptosiphon floribundus Ron Vanderhoff James Bailey 04/28/19 IRVC

Polygonaceae Chorizanthe Michael G. Simpson Ron Vanderhoff, Rebecca Crowe, Joe 05/02/19 IRVC Gautsch, Emile Fiesler Polygonaceae Chorizanthe staticoides Rebecca E. Crowe Robert L. Allen, Fred M. Roberts 06/17/19 IRVC Polygonaceae Pterostegia drymarioides Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Polygonaceae Sidotheca trilobata Rebecca E. Crowe Robert L. Allen, Fred M. Roberts 06/17/19 IRVC Polygonaceae Sidotheca trilobata Michael G. Simpson Rebecca Crowe, Fred Roberts, Robert 06/22/19 SDSU Allen Polygonaceae Sidotheca trilobata F.M. Roberts R.E. Crowe, M.G. Simpson, R.L. Allen 06/22/19 RSA

Ranunculaceae Delphinium Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Ranunculaceae Delphinium Rebecca E. Crowe Robert L. Allen, Fred M. Roberts 06/17/19 IRVC

Ranunculaceae Delphinium parryi Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens

15 Family Scientific Name Recorded By Assoc. Collectors Date Herb. Ranunculaceae Ranunculus hebecarpus Ron Vanderhoff 05/08/19 IRVC

Ranunculaceae Thalictrum Rebecca E. Crowe Robert L. Allen, Fred M. Roberts 06/17/19 IRVC

Rhamnaceae Ceanothus leucodermis Rebecca E. Crowe 06/22/19 IRVC Rhamnaceae Frangula californica Rebecca E. Crowe 06/22/19 IRVC Rosaceae Adenostoma fasciculatum Rebecca E. Crowe Michael G. Simpson, Robert L. Allen 06/22/19 IRVC

Rosaceae Cercocarpus betuloides Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Rosaceae Drymocallis Rebecca E. Crowe Robert L. Allen, Fred M. Roberts 06/17/19 IRVC Rubiaceae Galium Rebecca E. Crowe 05/11/19 IRVC Rubiaceae Galium Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Rubiaceae Galium Rebecca E. Crowe Robert L. Allen, Fred M. Roberts 06/17/19 IRVC Rubiaceae Galium angustifolium Rebecca E. Crowe 06/22/19 IRVC Sapindaceae F.M. Roberts R.E. Crowe, M.G. Simpson, J. Bailey, 06/08/19 RSA J. Stephens Saxifragaceae Lithophragma Rebecca E. Crowe Robert L. Allen, Fred M. Roberts 06/17/19 IRVC

Scrophulariaceae Scrophularia californica Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Solanaceae Solanum umbelliferum Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Solanaceae Solanum umbelliferum Michael G. Simpson Rebecca Crowe, Fred Roberts, Robert 06/22/19 IRVC Allen Violaceae Viola sheltonii Ron Vanderhoff James Bailey 04/28/19 IRVC Violaceae Viola sheltonii Rebecca E. Crowe Robert L. Allen, Fred M. Roberts 06/17/19 IRVC Agavaceae Hesperoyucca whipplei Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Alliaceae Allium peninsulare var. Ron Vanderhoff 05/19/19 IRVC peninsulare Juncaceae Juncus bufonius var. bufonius Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Juncaceae Juncus macrophyllus Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Liliaceae Calochortus albus Ron Vanderhoff 05/08/19 IRVC Liliaceae Calochortus albus Ron Vanderhoff 05/19/19 IRVC Liliaceae Calochortus albus Ron Vanderhoff 05/30/19 IRVC Liliaceae Calochortus albus Ron Vanderhoff 05/30/19 IRVC Liliaceae Calochortus albus Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Liliaceae Calochortus albus Rebecca E. Crowe Robert L. Allen, Fred M. Roberts 06/17/19 IRVC Liliaceae Lilium humboldtii ssp. F.M. Roberts H. Laskey 07/17/19 RSA ocellatum Poaceae Avena barbata Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Poaceae Bromus Rebecca E. Crowe Robert L. Allen, Fred M. Roberts 06/17/19 IRVC Poaceae Bromus arenarius Ron Vanderhoff Bob Allen, James Bailey 06/09/19 IRVC Poaceae Bromus diandrus Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Poaceae Bromus diandrus Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Poaceae Bromus grandis Ron Vanderhoff 06/06/19 IRVC Poaceae Bromus hordeaceus Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens 16 Family Scientific Name Recorded By Assoc. Collectors Date Herb. Poaceae Bromus pseudolaevipes Ron Vanderhoff Bob Allen, James Bailey 06/09/19 IRVC Poaceae Bromus rubens Michael G. Simpson Ron Vanderhoff, Rebecca Crowe, Joe 05/02/19 IRVC Gautsch, Emile Fiesler Poaceae Bromus rubens Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Poaceae Bromus rubens Rebecca E. Crowe 06/22/19 IRVC Poaceae Bromus tectorum Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Poaceae Elymus Rebecca E. Crowe Robert L. Allen, Fred M. Roberts 06/17/19 IRVC Poaceae Festuca microstachys Rebecca E. Crowe Michael G. Simpson, Ron Vanderhoff, 05/02/19 IRVC Joe Gautsch, Emile Fiesler

Poaceae Hordeum vulgare Ron Vanderhoff 05/08/19 IRVC Poaceae Melica Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Poaceae Melica imperfecta Rebecca E. Crowe Robert L. Allen, Fred M. Roberts 06/17/19 IRVC Poaceae Poa Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Poaceae Poa secunda F.M. Roberts R.E. Crowe, M.G. Simpson, J. Bailey, 06/08/19 RSA J. Stephens Poaceae Poa secunda Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 SDSU Bailey, Jillian Stephens Poaceae Poa secunda Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Poaceae Poaceae Ron Vanderhoff 06/06/19 IRVC Poaceae Stipa coronata Michael G. Simpson Rebecca Crowe, Fred Roberts, James 06/08/19 IRVC Bailey, Jillian Stephens Poaceae Stipa miliacea Rebecca E. Crowe Michael G. Simpson, Fred Roberts, 06/08/19 IRVC James Bailey, Jillian Stephens Themidaceae Dichelostemma capitatum Rebecca E. Crowe Michael G. Simpson, Ron Vanderhoff, 05/02/19 IRVC subsp. capitatum Joe Gautsch, Emile Fiesler

Themidaceae Dichelostemma capitatum Rebecca E. Crowe Michael G. Simpson, Ron Vanderhoff, 05/02/19 IRVC subsp. capitatum Joe Gautsch, Emile Fiesler

Ron Vanderhoff Fred Roberts Robert Allen

December 27, 2019

17 Selected photographs:

Santiago Peak phacelia (Phacelia keckii), with Palomar monkeyflower (Erythranthe diffusa). Santiago Peak.

Rattan’s monkeyflower (Diplacus rattanii). First Santa Ana Bob Allen with a recovering Pink-bracted Manzanita (A. Mts. record in 80+ years. pringlei ssp. drupacea) on June 9, 2019, the same plant he loosely fitted with a bicycle lock on April 11, 2014.

Cleveland’s malacothrix (). Shelton’s violet (Viola sheltonii). Southern extreme.

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Small-flowered monkeyflower, (Erythranthe inconspicua). Madrone (Arbutus menziesii), with basal burl recovery. A new record for the region.

Wartleaf ceanothus (Ceanothus papillosus). The last Southern blue cup (Githopsis diffusa ssp. diffusa), a new taxa individual on Los Pinos Ridge. For Orange County.

White stemmed blazing star (Mentzelia albicaulus), a new Santiago Peak from Indian Canyon Truck Trail. Santa Ana Mountains and Orange County species.

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