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APPENDIX 6.4 Biological Studies

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APPENDIX 6.4 Biological Studies Appendix A Special Status Plant Species: St. John’s Project Vicinity Status Elevation Range, Common Name CNPS Life Form, and Scientific Name Federal State RPR Habitat Requirements Flowering Period Potential Occurrence Ventura marsh milk-vetch FE CE 1B.1 Coastal dunes, coastal scrub, 1–35m Not Expected; only known from a Astragalus pycnostachyus var. marshes and swamps )edges, coastal PH small area in Oxnard, no suitable salt or brackish) habitat present on site. lanosissimus June–October Davidson's saltscale -- -- 1B.2 Coastal bluff scrub, coastal scrub; 10–200m Not Expected; no suitable habitat Atriplex serenana var. davidsonii alkaline. AH present. April–October Plummer’s mariposa lily -- -- 4.2 Chaparral, cismontane woodlands, 100–1700m Low Potential; very limited Calochortus plummerae coastal scrub, Lower montane PH (b) suitable habitat present. coniferous forests, valley and foothill grassland/ granitic, rocky. May–July Orcutt’s pincushion -- -- 1B.1 Coastal bluff scrub (sandy), coastal 0-100m Not Expected; no suitable habitat Chaenactis glabriuscula var. dunes. AH on site. orcuttiana January – August Salt marsh bird's-beak FE CE 1B.2 Coastal dunes, marshes and 0 – 30m Not Expected; no suitable wetland Cordylanthus maritimum ssp. swamps (coastal salt) AH(hp) habitat present. maritimum May–October Dune larkspur -- -- 1B.2 Chaparral (maritime), coastal dunes. 0 – 200m. Not Expected; no suitable habitat Delphinium parryi ssp. blochmaniae PH present. April–June Santa Susana tarplant -- CR 1B.2 Chaparral, coastal scrub; rocky on 280–760m. Not Expected; no suitable habitat Deinandra minthornii Santa Susanna sandstone. S (d) present. July–November Conejo dudleya FT -- 1B.2 Coastal scrub, valley and foothill 60–450m Not Expected; no suitable volcanic Dudleya abramsii ssp. parva grassland; rocky or gravelly, clay or PH soils are present. volcanic. May–June Impact Sciences, Inc. Shea Homes, St. John’s 378-21 January 2016 Appendix A (continued) Special Status Plant Species: St. John’s Project Vicinity Status Elevation Range, Common Name CNPS Life Form, and Scientific Name Federal State RPR Habitat Requirements Flowering Period Potential Occurrence Blochman’s dudleya -- -- 1B.1 Coastal bluff scrub, chaparral, 5–450m Not Expected; no suitable habitat Dudleya blochmaniae ssp. coastal scrub, valley and foothill PH present. blochmaniae grassland; rocky, often clay or serpentinite. April–June Marcescent dudleya FT CR 1B.2 Chaparral; volcanic, rocky 150–520m Not Expected; no suitable volcanic Dudleya cymosa ssp. marcescens PH soils are present. April – July Santa Monica dudleya FT -- 1B.2 Chaparral, coastal scrub; volcanic or 150–1675m Not Expected; no suitable volcanic Dudleya cymosa ssp. ovatifolia sedimentary rock. PH soils are present. March–June Verity’s dudleya FT -- 1B.2 Chaparral, cismontane woodland, 60–120m Not Expected; no suitable volcanic Dudleya verityi coastal scrub; volcanic, rocky. PH soils are present. May–June Conejo buckwheat -- CR 1B.2 Chaparral, coastal scrub, valley and 50–580m Not Expected; no suitable volcanic Eriogonum crocatum foothill grassland; Conejo volcanic PH soils are present. outcrops, rocky. April–July Southern tarplant -- -- 1B.1 Marshes and swamps (margins), 0–480m Not Expected; no suitable wetland Hemizonia parryi ssp. australis valley and foothill grassland AH or mesic habitat present. (vernally mesic), vernal pools. May–November Coulter's goldfields -- -- 1B.1 Marshes and swamps (coastal salt), 1–1220m Not Expected; no suitable wetland Lasthenia glabrata ssp. coulteri playas, vernal pools. AH habitat present. February–June Mexican malacothrix -- -- 2A Coastal dunes 0-40m Not Expected; no suitable habitat Malacothrix similis AH on site. April-May White-veined monardella -- -- 1B.3 Chaparral, cismontane woodland. 50-1525m Not Expected; no suitable habitat Monardella hypoleuca ssp. hypoleuca PH present. April-December Impact Sciences, Inc. Shea Homes, St. John’s 378-21 January 2016 Appendix A (continued) Special Status Plant Species: St. John’s Project Vicinity Status Elevation Range, Common Name CNPS Life Form, and Scientific Name Federal State RPR Habitat Requirements Flowering Period Potential Occurrence Southern curly-leaved monardella -- -- 1B.2 Chaparral, cismontane woodland, 0-300m Not Expected; no suitable coastal Monardella sinuate ssp. sinuata coastal dunes, coastal scrub AH habitat present. (openings) April-September Ojai navarretia -- -- 1B.1 Chaparral (openings), coastal scrub 275-620m Not Expected; no suitable habitat Navarretia ojaiensis (openings), valley and foothill AH present. grassland May-July Lyon’s pentachaeta FE CE 1B.1 Chaparral (openings), coastal scrub, 30–630m Not Expected; no suitable habitat Pentachaeta lyonii valley and foothill grassland/ rocky, AH present. clay. March–August Chaparral ragwort -- -- 2B.2 Chaparral, cismontane woodland, 15–800m Not Expected; no suitable habitat Senecio aphanactis coastal scrub; sometimes alkaline AH present. January–April Estuary seablite -- -- 1B.2 Marshes and swamps (coastal salt) 0–5m Not Expected; no suitable coastal Suaeda esteroa PH salt marsh habitat on site. May–January Sonoran Maiden Fern -- -- 2B.2 Meadows and seeps (seeps and 50–610m Not Expected; no suitable habitat Thelypteris puberula var. sonorensis streams) PH (r) on site. January – September California screw moss -- -- 1B.2 Chenopod scrub, valley and foothill 10-1460m Not Expected; no suitable habitat Totula californica grassland.; sandy, soil moss on site. STATUS KEY: LIFE FORM KEY: Federal State FE: Federally Endangered CE: State Endangered AH: Annual Herb (b): bulb FT: Federally Threatened Species CT: State Threatened AG: Annual Grass (d): deciduous FPE: Federally Proposed Endangered CR: State Rare PG: Perennial Grass (e): evergreen FPT: Federally Proposed Threatened PH: Perennial Herb (p): parasitic FC: Federal Candidate Species CNPS Rare Plant Rank PC: Perennial Cactus (r): rhizomatous RPR 1A: Plants presumed extirpated in California and either rare or extinct S: Shrub (s): stoloniferous elswhere Ss: Subshrub * No flowering Impact Sciences, Inc. Shea Homes, St. John’s 378-21 January 2016 Appendix A (continued) Special Status Plant Species: St. John’s Project Vicinity RPR 1B: Plants rare, threatened, or endangered in California and elsewhere T: Tree period provided in RPR 2A: Plants presumed extirpated in California, but common elsewhere available sources RPR 2B: Plants rare, threatened, or endangered in California, but more common elsewhere RPR 3: Plants about which more information is needed RPR 4: plants of limited distribution – a watch list Threat Ranks 0.1 Seriously threatened in California (over 80% o foccurrences threatened/high degree and immediacy of threat) 0.2 Moderately threatened in California (20-80% of occurrences threatened/moderate degree and immediacy of threat) 0.3 Not very threatened in California (less than 20% of occurrences threatened/low degree and immediacy of threat or no current threats known) Impact Sciences, Inc. Shea Homes, St. John’s 378-21 January 2016 Appendix B Special-Status Wildlife Species Recorded from the St. John’s Project Vicinity Common Name Status Scientific Name Federal State Habitat Requirements Potential Occurrence on the Project Site Invertebrates Trask shoulder band -- sa Terrestrial snail; little Not Expected; though little information is available, Helminthoglypta traskii ssp. traskii information available most of the confirmed sightings of this snail are in habitats that are wetter and less disturbed than occur on site. Mimic Tryonia (=CA braskish water snail) -- sa Brackish water habitats Not Expected; no suitable habitat Tryonia imitator Santa Monica grasshopper -- sa Found in Santa Monica Not Expected; known only from the Santa Monica Trimerotropis occidentiloides Mountains in open areas of Mountains chaparral Sandy beach tiger beetle -- sa Inhabits clean, dry, light- Not Expected; no suitable habitat Cicindela hirticollis gravida colored sand in the upper beach zones that are adjacent to non-brackish water. Senile tiger beetle sa Sandy habitats near water Not Expected; suitable sandy habitats are limited to Cicindela senilis frosti the streambed, which is typically washed out annually during storms. No suitable habitat on the site. Globose dune beetle -- sa Coastal dune habitats. Not Expected; no suitable habitat Coelus globosus Monarch butterfly (wintering sites) -- sa Winter roost sites located in Moderate Potential; individual monarchs present Danaus plexippus wind-protected tree groves on site, and suitable over-wintering roosts are (gum trees, Monterey pine, present in the eucalyptus windrows. However there and cypress trees), with is no adjacent water source nearby. The field survey nectar and water sources conducted in January 2016 (during prime over- nearby. wintering season) did not find concentrations of monarch butterflies; only scattered individuals were seen. Wandering (=saltmarsh) skipper -- sa Pickleweed marsh flats Not Expected; no suitable habitat Panoquina errans Impact Sciences, Inc. Shea Homes, St. John’s 378-21 January 2016 Appendix B (continued) Special Status Wildlife Species: St. John’s Project Vicinity Common Name Status Scientific Name Federal State Habitat Requirements Potential Occurrence on the Project Site Fishes Arroyo chub -- SSC Slow-moving or backwater Not Expected; no known from this watershed Gila orcutti sections of warm to cool streams with mud or sand substrates. Santa Ana sucker FT SSC Occupies small-to medium- Not Expected; no known
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    I. SPECIES Ceanothus crassifolius Torrey NRCS CODE: Family: Rhamnaceae (CECR) Order: Rhamnales Subclass: Rosidae Class: Magnoliopsida Lower right: Ripening fruits, two already dehisced. Lower center: Longitudinal channeling in stems of old specimen, typical of obligate seeding Ceanothus (>25 yr since last fire). Note dark hypanthium in center of white flowers. Photos by A. Montalvo. A. Subspecific taxa 1. C. crassifolius Torr. var. crassifolius 2. C. crassifolius Torr. var. planus Abrams (there is no NRCS code for this taxon) B. Synonyms 1. C. verrucosus Nuttal var. crassifolius K. Brandegee (Munz & Keck 1968; Burge et al. 2013) 2. C. crassifolius (in part, USDA PLANTS 2019) C. Common name 1. hoaryleaf ceanothus, sometimes called thickleaf ceanothus or thickleaf wild lilac (Painter 2016) 2. same as above; flat-leaf hoary ceanothus and flat-leaf snowball ceanothus are applied to other taxa (Painter 2016) D. Taxonomic relationships Ceanothus is a diverse genus with over 50 taxa that cluster in to two subgenera. C. crassifolius has long been recognized as part of the Cerastes group of Ceanothus based on morphology, life-history, and crossing studies (McMinn 1939a, Nobs 1963). In phylogenetic analyses based on RNA and chloroplast DNA, Hardig et al. (2000) found C. crassifolius clustered into the Cerastes group and in each analysis shared a clade with C. ophiochilus. In molecular and morphological analyses, Burge et al. (2011) also found C. crassifolius clustered into Cerastes. Cerastes included over 20 taxa and numerous subtaxa in both studies. Eight Cerastes taxa occur in southern California (see I. E. Related taxa in region). E. Related taxa in region In southern California, the related Cerastes taxa include: C.
  • Ventura County Plant Species of Local Concern

    Ventura County Plant Species of Local Concern

    Checklist of Ventura County Rare Plants (Twenty-second Edition) CNPS, Rare Plant Program David L. Magney Checklist of Ventura County Rare Plants1 By David L. Magney California Native Plant Society, Rare Plant Program, Locally Rare Project Updated 4 January 2017 Ventura County is located in southern California, USA, along the east edge of the Pacific Ocean. The coastal portion occurs along the south and southwestern quarter of the County. Ventura County is bounded by Santa Barbara County on the west, Kern County on the north, Los Angeles County on the east, and the Pacific Ocean generally on the south (Figure 1, General Location Map of Ventura County). Ventura County extends north to 34.9014ºN latitude at the northwest corner of the County. The County extends westward at Rincon Creek to 119.47991ºW longitude, and eastward to 118.63233ºW longitude at the west end of the San Fernando Valley just north of Chatsworth Reservoir. The mainland portion of the County reaches southward to 34.04567ºN latitude between Solromar and Sequit Point west of Malibu. When including Anacapa and San Nicolas Islands, the southernmost extent of the County occurs at 33.21ºN latitude and the westernmost extent at 119.58ºW longitude, on the south side and west sides of San Nicolas Island, respectively. Ventura County occupies 480,996 hectares [ha] (1,188,562 acres [ac]) or 4,810 square kilometers [sq. km] (1,857 sq. miles [mi]), which includes Anacapa and San Nicolas Islands. The mainland portion of the county is 474,852 ha (1,173,380 ac), or 4,748 sq.