Ventura County Planning Division 2018 Locally Important Plant List
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Abronia turbinata Torr. ex S. Consortium of California
Turbinate Sand-verbena A/PH Nyctaginaceae 2 Watson Herbaria
Acanthoscyphus parishii var.
abramsii (E.A. McGregor) Consortium of California
Abrams' Oxytheca AH Polygonaceae CRPR 1B.2 4-5 Reveal [synonym: Oxytheca Herbaria
parishii var. abramsii]
Acanthoscyphus parishii Consortium of California
Parish Oxytheca AH Polygonaceae CRPR 4.2 1 (Parry) Small var. parishii Herbaria
Acmispon glaber var. Consortium of California brevialatus (Ottley) Brouillet Short Deerweed PH Fabaceae 1 Herbaria
Acmispon heermannii Heermann Lotus or Consortium of California
(Durand & Hilg.) Brouillet var. PH Fabaceae 4 Hosackia Herbaria heermannii
Acmispon heermannii var. Roundleaf Heermann Consortium of California
PH Fabaceae 1 orbicularis (A. Gray) Brouillet Lotus or Hosackia Herbaria
Acmispon junceus (Bentham) Consortium of California
Rush Hosackia AH Fabaceae 2
Brouillet var. junceus Herbaria
1
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Acmispon micranthus (Torrey Consortium of California
Grab Hosackia or Lotus AH Fabaceae 3 & A. Gray) Brouillet Herbaria
Acmispon parviflorus Consortium of California
Tiny Lotus AH Fabaceae 2 (Bentham) D.D. Sokoloff Herbaria
Consortium of California
Agrostis hallii Vasey Hall's Bentgrass PG Poaceae 1
Herbaria
Common or Broadleaf Consortium of California
Alisma plantago-aquaticum L. PH Alismataceae 4
Water-plantain Herbaria
Consortium of California
Allium amplectens Torrey Narrowleaf Onion PG Alliaceae 1
Herbaria
Allium denticulatum (Traub) Consortium of California
Dentate Fringed Onion PG Alliaceae 1 D. McNeal Herbaria
Allium lacunosum S. Watson Consortium of California
Pitted Onion PG Alliaceae 1 var. lacunosum Herbaria
Allium lacunosum var.
Consortium of California
davisiae (M.E. Jones) D. Davis Onion PG Alliaceae 1
Herbaria McNeal
Consortium of California
Allium monticola Davidson Mountain Onion PG Alliaceae 4
Herbaria
2
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Consortium of California
Allium parryi S. Watson Parry Fringed Onion PG Alliaceae 3
Herbaria
Consortium of California
Allium praecox Brandegee Early Onion PG Alliaceae 4
Herbaria
Allophyllum divaricatum
Consortium of California
(Nuttall) A.D. Grant & V. Divaricate Allophyllum AH Polemoniaceae 4
Herbaria Grant
Allophyllum gilioides
Consortium of California
(Bentham) A.D. Grant & V. Straggling Gilia AH Polemoniaceae 5
Herbaria Grant subsp. gilioides
Allophyllum integrifolium Consortium of California
Sticky Allophyllum AH Polemoniaceae 1 (Brand) A.D. Grant & V. Grant Herbaria
Alopecurus carolinianus Consortium of California
Tufted Foxtail AG Poaceae 1 Walter Herbaria
Consortium of California
Alopecurus saccatus Vasey Pacific Foxtail AG Poaceae 2
Herbaria
Amaranthus californicus Consortium of California
California Amaranth AH Amaranthaceae 3 (Moq.) S. Watson Herbaria
Amaranthus powellii ssp. bouchonii (Thell.) Costea & Consortium of California Carretero Powell Amaranth AH Amaranthaceae 1 Herbaria
3
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Consortium of California Weak-leaved Burweed or Herbaria Ambrosia confertiflora DC. Bursage PH Asteraceae 2
Ambrosia salsola (T. & G. ex G.) Strother & B.G. Baldwin Consortium of California var. salsola Burrobrush S Asteraceae 3 Herbaria
Long-leaved or Purple Consortium of California
Ammannia coccinea Rottb. AH Lythraceae 3
Ammannia Herbaria
Ammannia robusta Heer & Consortium of California
Grand Redstem AH Lythraceae 2 Regel Herbaria
Amsinckia eastwoodae J.F. Consortium of California
Elegant Fiddleneck AH Boraginaceae 1 Macbr. Herbaria
Consortium of California
Amsinckia spectabilis Fisch.
Showy Fiddleneck AH Boraginaceae 1 Herbaria, Rancho Santa
& C. A. Mey. var. spectabilis
Ana Botanical Garden
Amsinckia vernicosa Hook. & Consortium of California
Vernal Fiddleneck AH Boraginaceae 1 Arn. Herbaria
Andropogon glomeratus var. Consortium of California
Bushy Bluestem PG Poaceae 1 pumilus Vasey ex Dewey Herbaria
Androsace elongata subsp. Consortium of California
Rock-jasmine AH Primulaceae 2 acuta (Greene) G. Robb. Herbaria
4
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Antennaria dimorpha (Nuttall) Consortium of California Torrey & A. Gray Low Everlasting PH Asteraceae 2 Herbaria
Anthoxanthum occidentale Consortium of California (Buckley) Veldkamp California Sweet Grass PG Poaceae 1 Herbaria
Antirrhinum nuttallianum
Consortium of California
subsp. subsessile (A. Gray) Nuttall Snapdragon AH Plantaginaceae 5
Herbaria D. Thompson
Consortium of California
Antirrhinum ovatum Eastwood Oval-leaved Snapdragon AH Plantaginaceae CRPR 4.2 2
Herbaria
Aphanes occidentalis (Nuttall) Consortium of California
Dew-cup, Lady’s Mantle AH Rosaceae 3 Rydb. Herbaria
Consortium of California
Aphanisma blitoides Moq. Aphanisma S Chenopodiaceae CRPR 1B.2 1
Herbaria
Consortium of California
Aralia californica S. Watson Elk Clover, Spikenard S Araliaceae 3
Herbaria
Consortium of California
Arbutus menziesii Pursh Pacific Madrone T Ericaceae 5
Herbaria
Consortium of California
Arctostaphylos patula Greene Greenleaf Manzanita S Ericaceae 3
Herbaria
5
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Aristida purpurea Nuttall var. Consortium of California purpurea Purple Three-awn Grass PG Poaceae 1 Herbaria
Aristida ternipes var. gentilis Consortium of California (Henrard) J.S. Trent Hook Three-awn Grass PG Poaceae 1 Herbaria
Consortium of California
Arnica discoidea Benth. Rayless or Discoid Arnica PH Asteraceae 1
Herbaria
Artemisia ludoviciana subsp. Consortium of California incompta (Nuttall) Keck White Sagebrush PH Asteraceae 1 Herbaria
Artemisia tridentata subsp.
Parish Great Basin Consortium of California
parishii (Gray) H.M. Hall & S Asteraceae 3
Sagebrush Herbaria Clements
Asplenium vespertinum Consortium of California
Western Spleenwort PF Aspleniaceae CRPR 4.2 1 Maxon Herbaria
Consortium of California Astragalus curtipes A. Gray Morro Milkvetch PH Fabaceae 2 Herbaria
Consortium of California
Astragalus oxyphysus Gray Robust Milkvetch PH Fabaceae 3
Herbaria
Astragalus pomonensis M.E. Consortium of California
Pomona Locoweed PH Fabaceae 3 Jones Herbaria
6
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Consortium of California Herbaria, Mary Carroll, Astragalus pycnostachyus var. Arcadis; Mary Meyer, lanosissimus (Rydb.) Munz Ventura Marsh Milkvetch PH Fabaceae FE, SE, CRPR 1B.1 1 CDFW
Astragalus whitneyi A. Gray Consortium of California var. whitneyi Whitney Locoweed PH Fabaceae 3 Herbaria
Atriplex argentea var. expansa (S. Watson) S.L. Welsh & Consortium of California Reveal Mojave Silverscale PH Chenopodiaceae 5 Herbaria
Atriplex canescens var. Consortium of California laciniata Parish in W.L. Jepson Caleb Saltbush S Chenopodiaceae 1 Herbaria
Consortium of California Atriplex coulteri (Moq.) D. Dietr. Coulter Saltbush PH Chenopodiaceae CRPR 1B.2 3 Herbaria
Consortium of California
Atriplex dioica Raf. Thickleaf Orach AH Chenopodiaceae 4
Herbaria
Atriplex watsonii Nelson ex Consortium of California
Matscale PH Chenopodiaceae 1 Abrams Herbaria
Mary Meyer, CDFW,
Baccharis malibuensis
Malibu Baccharis S Asteraceae CRPR 1B.1 4 Rick Burgess, Mark
Beauchamp & Henrickson
Elvin, USFWS
Baccharis salicina Torrey & A. Consortium of California
Emory Baccharis S Asteraceae 1 Gray Herbaria
7
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Consortium of California
Batis maritima L. Saltwort, Beachwort S Bataceae 3 Herbaria
Berberis aquifolium var. Dull-leaf or Jepson Holly- Consortium of California
dictyota Jeps. leaved Barberry S Berberidiaceae 3 Herbaria
Berberis pinnata Lagasca Consortium of California
subsp. pinnata Pinnate-leaved Barberry S Berberidiaceae 2 Herbaria
Consortium of California
Bidens frondosa L. Sticktight AH Asteraceae 2 Herbaria
Boechera breweri (S. Watson) Consortium of California Al-Shehbaz var. breweri Brewer Rock Cress PH Brassicaceae 2 Herbaria
Boechera californica (Rollins) Consortium of California
California Rockcress PH Brassicaceae 1 Windham & Al-Shehbaz Herbaria
Boechera retrofracta Consortium of California
Holboell Rock Cress PH Brassicaceae 1 (Graham) A. Löve & D. Löve Herbaria
Boechera xylopoda Windam Consortium of California
Desert Rock Cress PH Brassicaceae 4 & Al-Shehbaz Herbaria
Bolboschoenus [Scirpus]
Consortium of California
robustus (Pursh) Soják, Čas. Seashore Bulrush PG Cyperaceae 3
Herbaria Nár.
8
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Botrychium simplex E. Hitchc. Least Moonwort, Little Consortium of California var. simplex Grapefern PF Ophioglossaceae 1 Herbaria
Consortium of California PH Boykinia occidentalis T. & G. Santa Lucia Brookfoam Saxifragaceae 4 Herbaria
Consortium of California Herbaria; Tarja Sagar, PH Boykinia rotundifolia C. Parry Roundleaved Boykinia Saxifragaceae 4 NPS
Bromus orcuttianus (Shear) A. Consortium of California Hitchc. Orcutt Brome PG Poaceae 3 Herbaria
Bromus porteri (J.M. Coult.) Consortium of California
Nodding Brome PG Poaceae 1 Nash Herbaria
California macrophylla (H.&
Consortium of California
A.) Aldas., C. Navarro, P. Largeleaf Filaree AH Geraniaceae CRPR 1B.1 2
Herbaria Vargas, Ll. Saez & Aedo
Consortium of California
California Water-starwort, Callitriche marginata Torrey PH Plantaginaceae 3 Herbaria; Tarja Sagar,
Wallow Starwort NPS
Calochortus clavatus subsp. Slender Club-haired Consortium of California
PG Liliaceae CRPR 1B.2 4 gracilis Ownby Mariposa Lily Herbaria
Calochortus fimbriatus H.P. Consortium of California
Weed's Mariposa Lily PG Liliaceae CRPR 1B.2 5 McDonald Herbaria
9
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Calochortus palmeri S. Watson Consortium of California var. palmeri Palmer Mariposa Lily PG Liliaceae CRPR 1B.2 5 Herbaria
Calochortus plummerae Consortium of California Greene Plummer Mariposa Lily PG Liliaceae CRPR 1B.2 4 Herbaria
Calystegia malacophylla (E. Greene) Munz subsp. Consortium of California malacophylla Sierra Morning-glory PV Convolvulaceae 1 Herbaria
Calystegia occidentalis subsp. Consortium of California fulrata (Gray) Brummitt Western Morning-glory PV Convolvulaceae 1 Herbaria
Calystegia peirsonii (Abrams) Consortium of California
Peirson’s Morning-glory PV Convolvulaceae CRPR 4.2 1 Brummitt Herbaria
Camissonia contorta Consortium of California
Contorted Primrose AH Onagraceae 2 (Douglas) P.H. Raven Herbaria
Camissoniopsis pallida
Consortium of California
(Abrams) W.L. Wagner & Pale Primrose AH Onagraceae 4
Herbaria Hoch subsp. pallida
Cardamine pachystigma (S.
Consortium of California
Watson) Rollins var. Toothwort PH Brassicaceae 4
Herbaria pachystigma
Cardionema ramosissimum
Consortium of California
(Weinm.) A. Mels. & J.F. Sand Mat PH Caryophyllaceae 4
Herbaria Macbr.
10
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Carex athrostachya Olney Slender-beaked Sedge PG Cyperaceae 2 Consortium of California
Herbaria
Consortium of California Carex aurea Nuttall Golden-fruited Sedge PG Cyperaceae 2 Herbaria
Consortium of California Carex barbarae Dewey Santa Barbara Sedge PG Cyperaceae 5 Herbaria
Carex brainerdii Mack. Brainard Sedge PG Cyperaceae 1 UC Berkeley Herbarium
Consortium of California Carex densa L. Bailey Dense Sedge PG Cyperaceae 3 Herbaria
Consortium of California
Carex fracta Mackenzie Fragile-sheathed Sedge PG Cyperaceae 2
Herbaria, David Magney
Consortium of California
Carex globosa Boott Round-fruited Sedge PG Cyperaceae 3-4
Herbaria
Consortium of California
Carex hassei L. Bailey Hasse Sedge PG Cyperaceae 2
Herbaria
Consortium of California
Carex multicaulis L. Bailey Many-stemmed Sedge PG Cyperaceae 1
Herbaria
11
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Consortium of California Carex nebrascensis Dewey Nebraska Sedge PG Cyperaceae 1 Herbaria
Consortium of California Carex pansa L. Bailey Sand Dune Sedge PG Cyperaceae 2 Herbaria
Consortium of California Carex pellita Muhl. ex Willd. Woolly Sedge PG Cyperaceae 2 Herbaria
Consortium of California Carex rossii Boott Ross Sedge PG Cyperaceae 3 Herbaria
Consortium of California Carex schottii Dewey Schott Sedge PG Cyperaceae 1 Herbaria
Consortium of California
Carex spissa L. Bailey San Diego Sedge PG Cyperaceae 1
Herbaria
Castilleja attenuata (Gray) Consortium of California
Valley Tassels AH Orobanchaceae 2 Chuang & Heckard Herbaria
Consortium of California
Castilleja plagiotoma A. Gray Mojave Indian Paintbrush PH Orobanchaceae CRPR 4.3 2
Herbaria
Castilleja tenuis (A.A. Heller) Consortium of California
Bristle Owl’s Clover AH Orobanchaceae 1 Chuang & Heckard Herbaria, Rick Burgess
12
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Caulanthus californicus (S. Consortium of California Watson) Payson California Jewelflower AH Brassicaceae FE, SE 1 Herbaria
Caulanthus heterophyllus Different-leaved Consortium of California (Nutt.) Payson Jewelflower AH Brassicaceae 4 Herbaria
Consortium of California Caulanthus inflatus S. Watson Desert Candle AH Brassicaceae 3 Herbaria
Caulanthus lemmonii S. Consortium of California Watson Lemmon Jewelflower AH Brassicaceae CRPR 1B.2 3 Herbaria
Ceanothus cuneatus var. Consortium of California ramulosus Greene Coast Ceanothus S Rhamnaceae 1 Herbaria
Centromadia parryi subsp. Consortium of California
Southern Tarplant AH Asteraceae CRPR 1B.1 3 australis (Keck) B.G. Baldwin Herbaria
Consortium of California
Chaenactis fremontii A. Gray Desert Pincushion AH Asteraceae 2
Herbaria
Chaenactis glabriuscula var.
Different-seeded Yellow Consortium of California
heterocarpha (A. Gray) H.M. AH Asteraceae 2
Pincushion Herbaria Hall
Chaenactis glabriuscula var. Big-flowered Yellow Consortium of California
AH Asteraceae 4 megacephala A. Gray Pincushion Herbaria
13
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Chamaesyce melanadenia Consortium of California
(Torrey) Milsp. Squaw Spurge PH Euphorbiaceae 3 Herbaria
Chamaesyce micromera Consortium of California (Engelm.) Wooton & Standl. Sonoran Spurge AH Euphorbiaceae 1 Herbaria
Chamaesyce ocellate (Durand Consortium of California & Hilg.) Millsp. subsp. ocellata Littleye Spurge AH Euphorbiaceae 2 Herbaria
Cheilanthes clevelandii D.C. Consortium of California Eaton. Cleveland Lip-fern PF Pteridaceae 3 Herbaria
Cheilanthes cooperae D.C. Consortium of California
Mrs. Cooper Lip-fern PF Pteridaceae 2 Eaton Herbaria
Cheilanthes newberryi (D.C. Consortium of California
Cotton Fern PF Pteridaceae 4 Eaton) Domin Herbaria
Chenopodium berlandieri Moq. Consortium of California var. zschackei (Murr) Graebn. Pitseed Goosefoot AH Chenopodiaceae 5 Herbaria
Chenopodium desiccatum A. Consortium of California Nelson Aridland Goosefoot AH Chenopodiaceae 2 Herbaria
14
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Chloropyron maritimum (Nutt. Consortium of California ex Benth.) subsp. maritimum Saltmarsh Birds-beak AH Orobanchaceae CRPR 1B.1, FE, SE 1 Herbaria
Chorizanthe brevicornu Torr. Consortium of California var. brevicornu Brittle Spineflower AH Polygonaceae 1 Herbaria
Chorizanthe clevelandii C. Consortium of California Parry Cleveland Spineflower AH Polygonaceae 4 Herbaria
Chorizanthe membranacea Consortium of California Benth. Pink Spineflower AH Polygonaceae 1 Herbaria
Chorizanthe parryi var. San Fernando Valley Consortium of California fernandina (S. Watson) Jeps. Spineflower AH Polygonaceae SE, CRPR 1B.1 1 Herbaria
Consortium of California Chorizanthe uniaristata T. & G. One-awned Spineflower AH Polygonaceae 4 Herbaria
Chrysothamnus viscidiflorus (Hook.) Nutt. subsp. Consortium of California viscidiflorus Yellow Rabbitbrush S Asteraceae 2 Herbaria
15
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Cicuta douglasii (DC.) Coulter Consortium of California & Rose Western Water-hemlock PH Apiaceae 3 Herbaria
Cirsium scariosum Nutt. var. Consortium of California citrinum (Petr.) D.J. Keil Southern Meadow Thistle BH Asteraceae 3 Herbaria
Cistanthe maritima (Nutt.) Consortium of California Hershk. Seaside Redmaids AH Montiaceae CRPR 4.2 2 Herbaria
Consortium of California Clarkia affinis Lewis & Lewis Hairy Clarkia AH Onagraceae 4 Herbaria
Clarkia dudleyana (Abrams) Consortium of California J.F. Macbr. Dudley Godetia AH Onagraceae 5 Herbaria
Consortium of California Clarkia modesta Jeps. Modest Clarkia AH Onagraceae 2 Herbaria
Clarkia purpurea subsp. viminea (Douglas) Lewis & Consortium of California Lewis Large Purple Clarkia AH Onagraceae 1 Herbaria
Clarkia xantiana Gray subsp. xantiana Xantus Clarkia AH Onagraceae 1 H.M. Hall, Rick Burgess
Clinopodium douglasii Consortium of California
Yerba Buena PH Lamiaceae 4-5 (Benth.) Kuntze Herbaria
16
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Clinopodium mimuloides Consortium of California Kuntze Monkeyflower Yerba Buena PH/S Lamiaceae CRPR 4.2 1 Herbaria
Consortium of California Collinsia parviflora Lindley Blue-eyed Mary, Blue Lips AH Plantaginaceae 2 Herbaria
Consortium of California Collomia tinctoria Kellogg Yellow-staining Collomia AH Polemoniaceae 3 Herbaria
Comarostaphylis diversifolia subsp. planifolia (Jeps.) G.D. Consortium of California Wallace Simpleleaf Summer Holly S Ericaceae 2 Herbaria
Cornus sericea L. subsp. American or Creek Consortium of California sericea Dogwood S Cornaceae 3 Herbaria
Consortium of California Crassula aquatica (L.) Schönl. Water Pigmy-Weed AH Crassulaceae 1 Herbaria
Consortium of California
Crepis acuminata Nuttall Long-leaved Hawksbeard PH Asteraceae 4
Herbaria
Cryptantha affinis (A. Gray) Side-grooved Forget-Me- Consortium of California
AH Boraginaceae 2 Greene Not Herbaria
17
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Cryptantha flaccida (Lehm.) Consortium of California Greene Flaccid Forget-Me-Not AH Boraginaceae 4 Herbaria
Cryptantha leiocarpa (Fisch. & Consortium of California C. Meyer) Greene Coast Forget-Me-Not AH Boraginaceae 4 Herbaria
Cryptantha pterocarya (Torr.) Consortium of California Greene var. pterocarya Wing-nut Forget-Me-Not AH Boraginaceae 1 Herbaria
Cryptantha sparsiflora Few-flowered Forget-Me- Consortium of California (Greene) Greene Not AH Boraginaceae 4 Herbaria
Consortium of California Cucurbita palmata S. Watson Coyote Melon PV Cucurbitaceae 1 Herbaria
Cycladenia humilis var. Consortium of California
Elegant Cycladenia PH Apocynaceae 1 venusta (Eastwood) Munz Herbaria
Cylindropuntia californica
(Torr. & A. Gray) F.M. Knuth Consortium of California
Cane Cholla S Cactaceae 2 var. parkeri (J.M. Coult.) Herbaria
Pinkava
Cyperus acuminatus Torrey & Short-pointed Umbrella- Consortium of California
AG Cyperaceae 2 Hooker sedge Herbaria
18
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Cyperus erythrorhizos Consortium of California Muhlenb. Red-root Flatsedge AG Cyperaceae 1 Herbaria
Consortium of California Herbaria, David Magney, Cyperus laevigatus L. Smooth Flatsedge PG Cyperaceae 2 Carl Wishner
Consortium of California Cyperus odoratus L. Flatsedge AG Cyperaceae 2 Herbaria, Tarja Sagar
Consortium of California Cyperus squarrosus L. Awned Flatsedge PG Cyperaceae 1 Herbaria
Danthonia unispicata (Thurb.) Consortium of California Vasey One-spike Oat Grass PG Poaceae 1 Herbaria
Deinandra paniculata (A. Gray) Consortium of California Davidson & Moxley Paniculate Tarplant AH Asteraceae 1 Herbaria
Delphinium gracilentum Consortium of California
Coast Larkspur PH Ranunculaceae 5 Greene Herbaria
Delphinium hesperium A. Consortium of California
Western Larkspur PH Ranunculaceae 2 Gray subsp. hesperium Herbaria
Delphinium gypsophilum Consortium of California
Gypsum Larkspur PH Ranunculaceae CRPR 4.2 5 Ewan subsp. gypsophilum Herbaria
19
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Delphinium inopinum (Jeps.) Consortium of California H.F. Lewis & Epling Unexpected Larkspur PH Ranunculaceae CRPR 4.3 4 Herbaria
Delphinium umbraculorum H.F. Consortium of California Lewis & Epling Umbrella Larkspur PH Ranunculaceae CRPR 1B.3 3 Herbaria
Deschampsia cespitosa (L.) Consortium of California Beauv. subsp. cespitosa Tufted Hairgrass PG Poaceae 3 Herbaria
Descurainia californica (A. Consortium of California Gray) O.E. Schulz California Tansy Mustard AH Brassicaceae 2 Herbaria
Few-flowered Bleeding Consortium of California Dicentra pauciflora S. Watson Heart PH Fumariaceae 1 Herbaria
Consortium of California Herbaria; Rick Burgess; Dichondra occidentalis House Western Dichondra PH Convolvulaceae CRPR 4.2 4 Tarja Sagar, NPS
Diplacus rutilus [A. Grant] Red Sticky Bush Consortium of California McMinn Monkeyflower S Phrymaceae 1 Herbaria, Rick Burgess
Distichlis littoralis (Engelm.) Consortium of California
Shoregrass PG Poaceae 1 H.L. Bell & Columbus Herbaria
Dodecatheon alpinum (A. Consortium of California
Alpine Shooting Star PH Primulaceae 2 Gray) Greene Herbaria
20
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Dodecatheon clevelandii subsp. patulum (Greene) H.J. Lowland Padre Shooting Consortium of California Thompson Star PH Primulaceae 1 Herbaria
Consortium of California Lobeliaceae Downingia bella Hoover Hoover Downingia AH 1 Herbaria
Dudleya caespitosa (Haw.) Consortium of California Britton & Rose Sea Lettuce PH Crassulaceae 4 Herbaria
Tarja Sagar, NPS; Stephen McCabe, UCSB Dudleya cymosa subsp. Arboretum; Rick Burgess, agourensis K.M. Nakai Agoura Hills Live-forever PH Crassulaceae FT, CRPR 1B.2 1 David Magney
Tarja Sagar, NPS; Dudleya cymosa (Lem.) Britton Stephen McCabe, UCSB & Rose subsp. cymosa Canyon Live-forever PH Crassulaceae 1 Arboretum; David Magney
Consortium of California Dudleya cymosa subsp. Herbaria; Tarja Sagar, marcescens Moran Marcescent Live-forever PH Crassulaceae FT, SR, CRPR 1B.2 5 NPS
Consortium of California Herbaria; Tarja Sagar, Dudleya parva Rose & NPS; Stephen McCabe, Davidson Conejo Live-forever PH Crassulaceae FT, CRPR 1B.2 1 UCSB Arboretum
Consortium of California
Herbaria; Tarja Sagar, Dudleya verityi K.M. Nakai Verity Live-forever PH Crassulaceae FT, CRPR 1B.2 1
NPS; Stephen McCabe,
UCSB Arboretum
21
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Eastwoodia elegans Consortium of California Brandegee Yellow Mock Aster S Asteraceae 2 Herbaria
Consortium of California Elatine brachysperma Gray Slender Waterwort AH Elatinaceae 1 Herbaria
Consortium of California Elatine californica Gray California Waterwort AH Elatinaceae 1 Herbaria
Eleocharis acicularis var. Consortium of California gracilescens Svenson Graceful Spikerush PG Cyperaceae 1 Herbaria
Eleocharis bella (Piper) Consortium of California Svenson Bella Spikerush PG Cyperaceae 1 Herbaria
Eleocharis bernardina Munz & Consortium of California Johnston Few-flowered Clubrush PG Cyperaceae 3 Herbaria
Consortium of California Eleocharis quinqueflora Herbaria, Rick Burgess, (Hartmann) O. Schwarz Few-flowered Spikerush PG Cyperaceae 1 David Magney
Eleocharis rostellata (Torrey) Consortium of California Torrey Beaked Spikerush PG Cyperaceae 4 Herbaria
Eleocharis suksdorfiana Consortium of California
Suksdorf's Spikerush PG Cyperaceae 2 Beauv. Herbaria, David Magney
Consortium of California
Elodea canadensis Rich. Common Waterweed PG Hydrocharitaceae 1
Herbaria
22
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Elymus cinereus Scribn. & Consortium of California Merr. Great Basin Wildrye PG Poaceae 1 Herbaria, Rick Burgess
Elymus glaucus subsp. jepsonii Jepson Blue or Woodland Consortium of California (Burtt Davy) Gould Wildrye PG Poaceae 4 Herbaria
Elymus stebbinsii (Scribner & Consortium of California J.G. Smith) Gould Wheatgrass PG Poaceae 5 Herbaria
Emmenanthe penduliflora var. Consortium of California rosea Brand Rose Whispering Bells AH Boraginaceae 1 Herbaria
California Desert Tea, Consortium of California Ephedra californica S. Watson Cañatillo S Ephedraceae 3 Herbaria
Epilobium ciliatum subsp. glandulosum (Lehm.) P. Hoch Sticky Northern Willow- Consortium of California & Raven herb AH Onagraceae 4 Herbaria
Epilobium densiflorum (Lindley) Dense-flowered Spike- Consortium of California P. Hoch & Raven primrose AH Onagraceae 3 Herbaria
Epilobium foliosum (Torrey & Consortium of California
Leafy Spike-primrose AH Onagraceae 2 A. Gray) Suksd. Herbaria
Epilobium glaberrimum Consortium of California
Waxy Willow-herb AH Onagraceae 4 Barbey subsp. glaberrimum Herbaria, Rick Burgess
23
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Consortium of California Epilobium halleanum Hausskn. Gland Willow-herb PH Onagraceae 2 Herbaria
Epilobium minutum Lindley ex Consortium of California Lehm. Chaparral Willowherb AH Onagraceae 1 Herbaria
Eragrostis pectinacea var. Spreading Tufted Consortium of California miserrima (Fourn.) Reeder Lovegrass AG Poaceae 1 Herbaria
Eriastrum hooveri (Jepson) H. 1 on County Consortium of California Mason Hoover Woolly Star AH Polemoniaceae Boundary Herbaria
Ericameria cooperi (Gray) H.M. Consortium of California Hall var. cooperi Cooper Goldenbush S Asteraceae 2 Herbaria
Ericameria parryi var. aspera (Greene) G.L. Nesom & G.I. Consortium of California Baird Parry Rabbitbrush S Asteraceae 3 Herbaria
Conejo or Saffron Consortium of California Eriogonum crocatum Davidson Buckwheat S Polygonaceae SR, CRPR 1B.2 3 Herbaria
Eriogonum kennedyi var.
Alpine Kennedy Consortium of California alpigenum (Munz & Johnston) PH Polygonaceae CRPR 1B.3 1
Buckwheat Herbaria Munz & Johnston
24
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Consortium of California Eriogonum thurberi Torrey Thurber's Wild Buckwheat AH Polygonaceae 1 Herbaria
Eriogonum wrightii var. Sheathed Wright Consortium of California membranaceum Jeps. Buckwheat S Polygonaceae 1 Herbaria, Rick Burgess
Eryngium vaseyi J. Coulter & Consortium of California Rose Coyote Thistle PH Apiaceae 1 Herbaria
Consortium of California Erysimum insulare Greene Island Wallflower AH/BH Brassicaceae 2 Herbaria
Euphorbia polycarpa var. Consortium of California hirtella Benth. Hairy Golondrina PH Euphorbiaceae 1 Herbaria
Galium californicum Hooker & UCSB Herbarium, David Arnott subsp. californicum California Bedstraw PH Rubiaceae Magney
Galium californicum ssp. flaccidum (E. Greene) Consortium of California Dempster & Stebb. California Bedstraw PH Rubiaceae 2 Herbaria
Galium cliftonsmithii (Dempster) Dempster & CRPR 4.3 Consortium of California Stebb. Santa Barbara Bedstraw PH Rubiaceae 1 Herbaria
25
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Consortium of California
Galium triflorum Michaux Sweet-scented Bedstraw PH Rubiaceae 2 Herbaria
Gamochaeta ustulata (Nutt.) Consortium of California Holub Gamochaeta BH Asteraceae 1 Herbaria
Consortium of California Garrya elliptica Lindley Silk-tassel Bush S Garryaceae 2-3 Herbaria
Geranium californicum G Jones Consortium of California & F. Jones California Geranium PH Geraniaceae 1 Herbaria
Gilia latiflora subsp. Davyi Consortium of California (Milliken) A. & V. Grant Davy Broad-flowered Gilia AH Polemoniaceae 3 Herbaria
Hesperevax acaulis var. Consortium of California robustior Morefield Robust Dwarf Evax AH Asteraceae 2 Herbaria
Hesperochiron californicus Consortium of California (Benth.) S. Watson California Hesperochiron PH Boraginaceae 5 Herbaria
Heterotheca subaxillaris ssp. Consortium of California latifolia (Buckley) Semple False Goldenaster AH/BH Asteraceae 1 Herbaria
Consortium of California
Heuchera caespitosa Eastw. Urn-flowered Alumroot PH Saxifragaceae CRPR 4.3 1
Herbaria
26
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Consortium of California Hieracium albiflorum Hooker White-flowered Hawkweed PH Asteraceae 2 Herbaria, Rick Burgess
Hordeum brachyantherum Consortium of California subsp brachyantherum Nevski Meadow Barley AG Poaceaev 2 Herbaria
Hornungia procumbens (L.) Consortium of California Hayek Prostate Hutchinsia AH Brassicaceae 1 Herbaria
Hulsea vestita subsp. Consortium of California gabrielensis Wilken San Gabriel Hulsea PH Asteraceae CRPR 4.3 2 Herbaria
Consortium of California Hydrocotyle verticillata Thunb. Marsh Pennywort PH Araliaceae 4 Herbaria
Consortium of California Imperata brevifolia Vasey Satintail PG Poaceae CRPR 2.1 2 Herbaria
Consortium of California Isoëtes howellii Engelm. Howell Quillwort PF Isoetaceae 1 Herbaria
Consortium of California Juncus macrandrus Cov. Long-anthered Rush PG Juncaceae 2 Herbaria
Consortium of California Juncus patens E. Meyer Spreading Rush PG Juncaceae 5 Herbaria
Consortium of California Kopsiopsis strobilacea Gray California Ground Cone PH Orobanchaceae 5 Herbaria
27
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Consortium of California
Lasthenia ferrisiae Ornduff Ferris Goldfields AH Asteraceae CRPR 4.2 2
Herbaria
Lasthenia glabrata subsp. Consortium of California
coulteri (Gray) Ornduff Coulter's Goldfields AH Asteraceae CRPR 1B.1 3
Herbaria
Consortium of California
Lemna aequinoctialis Welw Lesser Duckweed AG Araceae 1
Herbaria
Lemna minor L. Consortium of California
Duckweed AG Araceae 2 Herbaria
Consortium of California Lemna turionifera Landolt Duckweed AG Araceae 4 Herbaria
Consortium of California Lepidium dictyotum A. Gray Alkali Pepperwort AH Brassicaceae 1 Herbaria
Lessingia glandulifera var. Consortium of California peirsonii (J.T. Howell) Markos Peirson Lessingia AH Asteraceae 1 Herbaria
Consortium of California
Limosella aquatica L. Mudwort AH Plantaginaceae 1
Herbaria
Low Berbia Impia AH Asteraceae 1 UCSB Herbarium, David Logfia depressa (A.Gray) Magney and Rick Holub Burgess
28
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Lomatium caruifolium (H.& A.) J.M. Coult. & Rose var. caruifolium Alkali Desert parsley PH Apiaceae 2 UC Riverside Herbarium
Consortium of California Lycium andersonii Gray Anderson Desert-thorn S Solanaceae 1 Herbaria
Consortium of California Madia sativa Molina Coast Tarplant AH Asteraceae 4 Herbaria
Consortium of California Malacothrix glabrata A. Gray Desert Dandelion AH Asteraceae 2 Herbaria
0 (historical
Malacothrix incana (Nuttall) Consortium of California
Dunedelion PH Asteraceae CRPR 4.3 occurrences in Torrey & A. Gray Herbaria
County)
Marsilea vestita Hooker & Hairy Pepperwort, Clover Consortium of California
PF Marsiliaceae 3 Greville subsp. vestita Fern Herbaria
Consortium of California
Meconella denticulata Greene Tiny Poppy AH Papaveraceae 5
Herbaria
Microseris douglasii (DC.) Consortium of California Schultz-Bip. ssp. douglasii Douglas Microseris AH Asteraceae 3 Herbaria
Microseris douglasii ssp. Consortium of California tenella (A. Gray) Chambers Slender Douglas Microseris AH Asteraceae 1 Herbaria
29
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Mirabilis multiflora var. Consortium of California pubescens S. Watson Froebel Four O’Clock PH Nyctaginaceae 2 Herbaria
Consortium of California Monardella sinuata subsp. Herbaria; Mark Elvin, sinuata Elvin & A.C. Sanders Curly-leaved Horsemint PH Lamiaceae 2 USFWS
Morella californica (Cham. & Schltdl.) Wilbur [synonym: California Wax-Myrtle, Consortium of California Myrica californica] Pacific Bayberry S Myricaceae 1 Herbaria
Consortium of California Mucronea californica Benth. California Spineflower AH Polygonaceae CRPR 4.2 2 Herbaria
Consortium of California Myosurus minimus L. Common Mousetails AH Ranunculaceae 1 Herbaria
Navarretia peninsularis Southern California Consortium of California
AH Polemoniaceae 3 Greene Navarretia Herbaria
Consortium of California
Nemacladus capillaris Greene Common Nemacladus AH Campanulaceae 1
Herbaria
Opuntia basilaris Engelm. & Consortium of California
Beavertail Cactus S Cactaceae 1 J. Bigelow var. basilaris Herbaria
30
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Consortium of California Orcuttia californica Vasey California Orcutt Grass AG Poaceae FE, SE, CRPR 1B.2 1 Herbaria
Orobanche valida Jeps. Consortium of California subsp. valida Rock Creek Broom-rape PH Orobanchaceae CRPR 1B.2 1 Herbaria
Consortium of California Papaver californicum Gray Wind or Fire Poppy AH Papaveraceae 5 Herbaria
Pentachaeta fragilis Consortium of California Brandegee Fragile Pygmy Daisy AH Asteraceae CRPR 4.3 4 Herbaria
Consortium of California
Perityle emoryi Torrey Emory's Rock Daisy AH Asteraceae 1
Herbaria
Phacelia exilis (Gray) G.J. Transverse Range Consortium of California
AH Boraginaceae CRPR 4.3 5 Lee Phacelia Herbaria
Consortium of California Phacelia grisea Gray White-flowered Phacelia AH Boraginaceae 1 Herbaria
Phyla lanceolata (Michx.) Consortium of California Greene Narrowleaf Frog-fruit PH Verbenaceae 1 Herbaria
Consortium of California
Pilularia americana A. Braun American Pillwort PF Marsiliaceae 2
Herbaria
31
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Consortium of California Pinus flexilis E. James Limber Pine T Pinaceae 1 Herbaria
Consortium of California Pinus sabiniana D. Don Foothill or Gray Pine T Pinaceae 1 Herbaria
Plagiobothrys undulates (Piper) Consortium of California I.M. Johnston Undulate Popcornflower AH Boraginaceae 1 Herbaria
Platanthera sparsiflora (S. Consortium of California Watson) Schltr. Few-flowered Rein Orchid PG Orchidaceae 1-2 Herbaria
Polygonum polygaloides
Consortium of California
subsp. kelloggii (Greene) J. Kellogg Knotweed AH Polygonaceae 1
Herbaria Hickman
Polystichum imbricans (D.C.
Consortium of California
Eaton) D.H. Wagner subsp. Imbricate Sword Fern PF Dryopteridaceae 1
Herbaria imbricans
Pseudostellaria jamesiana (Torrey) W.A. Weber & R.I. Consortium of California Hartman False Chickweed PH Caryophyllaceae 1 Herbaria
Pyrola picta Smith Consortium of California White-veined Wintergreen PH Ericaceae 2 Herbaria
32
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Consortium of California Quercus palmeri Engelm. Palmer Oak T Fagaceae 1 Herbaria
Consortium of California Ribes amarum McClatchie Bitter Gooseberry S Grossulariaceae 1 Herbaria
Ribes aureum var. gracillimum Consortium of California (Cov. & Britton) Jeps. Slender Golden Currant S Grossulariaceae 4 Herbaria
Rorippa curvisiliqua (Hooker) Consortium of California Bessey ex Britton Curved-pod Watercress AH Brassicaceae 4 Herbaria
Consortium of California Sagittaria sanfordii Greene Sanford Arrow-head PH Alismataceae CRPR 1B.2 1 Herbaria
Consortium of California Salicornia bigelovii Torrey Bigelow Pickleweed AH Chenopodiaceae 1 Herbaria
Consortium of California Salicornia depressa Standley Pickleweed AH Chenopodiaceae 2 Herbaria
Consortium of California Salvia carduacea Benth. Thistle Sage PH Lamiaceae 1 Herbaria
Salvia dorrii var. pilosa (Gray) Consortium of California Strachan & Reveal Pilose Desert Sage S Lamiaceae 2 Herbaria
33
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Samolus parviflorus Raf. Seaside Brookweed PH Theophrastaceae 2 David Magney
Schoenoplectus saximontanus Consortium of California (Fern.) J. Raynal Rocky Mountain Bulrush AG Cyperaceae 1 Herbaria
Consortium of California Schoenoplectus Herbaria, David Magney, tabernaemontani (C. Gmelin) and Rick Burgess
Palla Soft-stem Bulrush PG Cyperaceae 3
California Groundsel, Consortium of California Senecio aphanactis Greene Rayless Ragwort AH Asteraceae CRPR 2.2 2 Herbaria
Salt Spring Consortium of California Sidalcea neomexicana Gray Checkermallow PH Malvaceae CRPR 2.2 3-4 Herbaria
Sidotheca caryophylloides
Consortium of California
Parry [synonym: Oxytheca Chickweed Oxytheca AH Polygonaceae CRPR 4.3 4-5
Herbaria caryophylloides]
Sidotheca trilobata (A. Gray)
Consortium of California
Reveal [synonym: Oxytheca Three-lobed Oxytheca AH Polygonaceae 1
Herbaria trilobata]
Streptanthus campestris S. Consortium of California Watson Southern Jewelflower B/PH Brassicaceae CRPR 1B.3 1 Herbaria
34
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Suaeda esteroa Ferren & Consortium of California
Estuary Seablite S Chenopodiaceae CRPR 1B.2 1 Whitmore Herbaria
Symphoricarpos albus var. Consortium of California laevigatus (Fern.) S.F. Blake Common Snowberry S Caprifoliaceae 2 Herbaria
Symphyotrichum lanceolatum var. hesperium (A.Gray) G.L. Consortium of California Nesom Siskiyou Aster PH Asteraceae 2 Herbaria
Symphyotrichum spathulatum (Lindl.) G.L. Nesom var. Consortium of California spathulatum Western Mountain Aster PH Asteraceae 1 Herbaria
Syntrichopappus lemmonii (A. Consortium of California
Lemmon’s Xerasid AH Asteraceae CRPR 4.3 1 Gray) A. Gray Herbaria
Trichostema micranthum Consortium of California
Bluecurls AH Lamiaceae 1-2 Gray Herbaria
Consortium of California
Trichostema ovatum Curran Ovate Bluecurls AH Lamiaceae 1
Herbaria
Trifolium bifidum var. decipiens Consortium of California E. Greene Pinole Clover AH Fabaceae 1 Herbaria
Veratrum californicum Durand Consortium of California
California False Hellebore PG Melanthiaceae 1 var. californicum Herbaria
35
Locally Important Plant List- Dec. 2018
Number of
Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source
Ventura County
Verbena bracteata Lagasca & Consortium of California J.D. Rodriguez Prostrate Verbena AH/BH Verbenaceae 2-3 Herbaria
UCSB Herbaria and Santa Veronica serpyllifolia ssp. Barbara Botanical Garden humifusa (Dickson) Syme Tyme-leaved Speedwell AH Plantaginaceae 2 Herbaria
1 on County Consortium of California Yucca brevifolia Engelm. Herbert's Joshua Tree T Agavaceae Boundary Herbaria
Notes: Scientific nomenclature follows the Flora of North America (1993-2011). The most current taxonomy is followed when changes have occurred since publication of the above listed references, as indicated on the Jepson Herbarium’s online eFlora pages (http://ucjeps.berkeley.edu/IJM.html). Common names follow Abrams and Ferris (1960), Neihaus and Ripper (1976), and DeGarmo (1980).
Habit definitions: Fed/State Status definitions: AF = annual fern or fern ally FE = Federally listed Endangered AG = annual grass or graminoid FT = Federally listed Threatened AH = annual herb SE = California listed Endangered BH = biennial herb ST = California listed Threatened PF = perennial fern or fern ally SR = California listed Rare PG = perennial grass or graminoid CRPR = California Rare Plant Rank PH = perennial herb PV = perennial vine S = shrub T = tree
36
Locally Important Plant List- Dec. 2018