SENSITIVE PLANTS OF NEVADA & PLACER COUNTIES by Richard Hanes, Rare Plant Coordinator, Redbud Chapt., California Native Plant Society Copyright Ó Oct. 2001

DEFINITIONS

CNPS Lists:

List 1A: Plants Presumed Extinct in Calif.

List 1B: Plants Rare, Threatened, or Endangered in Calif. And Elsewhere.

List 2: Plants Rare, Threatened, or Endangered in Calif. But More Common Elsewhere

List 3: Plants About Which We Need More Information - A Review List.

List 4: Plants of Limited Distribution - A Watch List (not rare, but uncommon enough that their status should be monitored regularly).

CNPS R-E-D CODE:

R (Rarity)

1-Rare, but found in sufficient numbers and distributed widely enough that the potential for extinction is low at this time.

2-Distributed in a limited number of occurrences, occasionally more if each occurrence is small.

3-Distributed in one to several highly restricted occurrences, or present in such small numbers that it is seldom reported.

E (Endangerment)

1-Not endangered.

2-Endangered in a portion of its range.

3-Endangered throughout its range.

D (Distribution)

1-More or less widespread outside Calif.

2-Rare outside Calif.

3-Endemic to Calif.

ALPHABETICAL LISTING OF PLANTS

Allium sanbornii var. congdonii

“Congdon’s Onion”

Liliaceae List: 4 R-E-D: 1-1-3

Blooms: Apr-Jul Nevada & Placer Co.

Serpentine/Gabbro Chaparral

Allium sanbornii var. sanbornii

“Sanborn’s Onion”

Liliaceae List: 4 R-E-D: 1-2-2

Blooms: Jul-Aug Nevada & Placer Co.

Serpentine/Vol. Mudflow Chaparral

Androsace occidentalis var. simplex

“Western Androsace”

Primulaceae List: 2 R-E-D: 3-1-1

Blooms: Aug-Sep Placer Co.

Upper Conifer Forest

Arabis rigidissima var. demota

“Carson Range Rock Cress”

Brassicaceae List: 1B R-E-D: 3-2-2

Blooms: Aug Placer Co.

Upper Conifer Forest

Arctostaphylos mewukka ssp. truei

“True’s Manzanita”

Ericaceae List: 4 R-E-D: 1-2-3

Blooms: Feb-May Nevada & Placer Co.

Chaparral, Foothill Woodland, Lower Conifer Forest

Astragalus pauperculus

“Depauperate Milk-vetch”

Fabaceae List: 4 R-E-D: 1-1-3

Blooms: Mar-May Placer Co.

Foothill Grassland & Chaparral

Astragalus whitneyi var lenophyllus

“Whitney’s Milkvetch”

Fabaceae List: 4 R-E-D: 1-1-3

Blooms: Jul-Aug Nevada & Placer Co.

Subalpine

Azolla mexicana

“Mexican Mosquito Fern”

Azollaceae List: 4 R-E-D: 1-2-1

Blooms: Aug Nevada Co.

Bogs/Fens

Balsamorhiza macrolepis var. macrolepis

“Big-scale Balsamroot”

Asteraceae List: 1B R-E-D: 2-2-3

Blooms: Mar-Jun Placer Co.

Foothill Woodland & Grassland

Botrychium minganense

“Mingan Moonwort”

Ophioglossaceae List: 2 R-E-D: 3-1-1

Blooms: Jul-Aug Nevada Co.?

Montane Meadow & Riparian, Bogs/Fens

Bruchia bolanderi

Moss

Bruchianceae List: 2 R-E_D: 2-2-2

Blooms: Nevada Co.

Montane Meadow & Riparian, Seeps

Bulbostylis capillaris

“Thread-leaved Beakseed”

Cyperaceae List: 4 R-E-D: 1-2-1

Blooms: Jun-Aug Nevada Co.

Lower Conifer Forest, Meadows

Calystegia stebbinsii

“Stebbins’s Morning-glory”

Convolvulaceae List: 1B R-E-D: 3-3-3

Blooms: May-Jun Nevada Co.

Serpentine/Gabbro Chaparral

Cardamine pachystigma var. dissectifolia

“Dissected-leaf Toothwort”

Brassicaceae List: 3 R-E-D: ?-?-3

Blooms: Feb-May Placer Co.

Serpentine/Gabbro Chaparral, Lower Conifer Forest

Carex davyi

“Davy’s Sedge”

Cyperaceae List: 4 R-E-D: 1-1-3

Blooms: May-Jun Nevada & Placer Co.

Subalpine, Upper Conifer Forest

Carex sheldonii

“Sheldon’s Sedge”

Cyperaceae List: 2 R-E-D: 2-2-1

Blooms: Jun-Aug Placer Co.

Lower Conifer Forest, Montane Riparian

Chlorogalum grandiflorum

“Red Hills Soaproot”

Liliaceae List: 1B R-E-D: 2-2-3

Blooms: May-Jun Placer Co.

Serpentine/Gabbro Chaparral, Foothill Woodland

Clarkia biloba ssp. brandegeae

“Brandegee’s Clarkia”

Onagraceae List: 1B R-E-D: 2-2-3

Blooms: May-Jun Nevada Co.

Foothill Woodland, Lower Conifer Forest

Claytonia megarhiza

“Fell-fields Claytonia”

Portulacaceae List: 2 R-E-D: 2-1-1

Blooms: Jul-Aug Nevada Co.

Subalpine

Cordylanthus mollis ssp. hispidus

“Hispid Bird’s-beak”

Scrophulariaceae List: 1B R-E-D: 2-3-3

Blooms: Jun-Sep Placer Co.

Foothill Riparian & Grassland

Cryptantha glomeriflora

“Clustered-flower Cryptantha”

Boraginaceae List: 4 R-E-D: 1-1-3

Blooms: Jun-Sep Nevada Co.

Subalpine, Upper Conifer Forest

Cypripedium fasciculatum

“Clustered Lady’s-slipper Orchid”

Orchidaceae List: 4 R-E-D: 1-2-2

Blooms: Mar-Jul Nevada Co.

Lower Conifer Forest

Darlingtonia californica

“California Pitcherplant”

Sarraceniaceae List: 4 R-E-D: 1-2-1

Blooms: Apr-Jul Nevada Co.

Montane Meadow

Downingia pusilla

“Dwarf Downingia”

Campanulaceae List: 2 R-E-D: 1-2-1

Blooms: Mar-May Placer Co.

Foothill Grassland, Vernal Pools

Drosera anglica

“English Sundew”

Droseraceae List: 2 R-E-D: 2-1-1

Blooms: Jul-Aug Nevada Co.

Bogs/Fens

Erigeron miser

“Starved Daisy”

Asteraceae List: 1B R-E-D: 2-1-3

Blooms: Jun-Oct Nevada & Placer Co.

Upper Conifer Forest, Subalpine

Erigeron petrophilus var. sierrensis

“Northern Sierra Daisy”

Asteraceae List: 4 R-E-D: 1-1-3

Blooms: Jun-Sep Nevada Co.

Foothill Woodland, Lower Conifer Forest

Eriogonum collinum

“Hill Buckwheat”

Polygonaceae List: 4 R-E-D: 1-1-1

Blooms: Jun-Sep Nevada Co.

Sagebrush-Pine

Eriogonum tripodum

“Tripod Buckwheat”

Polygonaceae List: 4 R-E-D: 1-2-3

Blooms: May-Jul Placer Co.

Serpentine/Gabbro Chaparral, Foothill Woodland

Eriogonum umbellatum var. torreyanum

“Donner Pass Buckwheat”

Polygonaceae List: 1B R-E-D: 3-2-3

Blooms: Jul-Sep Nevada & Placer Co.

Upper Conifer Forest, Ridges

Fremontodendron decumbens

“Pine Hill Flannebush”

Sterculiaceae List: 1B R-E-D: 3-2-3

Blooms: Apr-Jul Nevada Co.

Serpentine/Gabbro Chaparral

Fritillaria agrestis

“Stinkbells”

Liliaceae List: 4 R-E-D: 1-2-3

Blooms: Mar-May Placer Co.

Foothill Chaparral & Woodland

Fritillaria eastwoodiae

“Butte County Fritillary”

Liliaceae List: 3 R-E-D: ?-2-3

Blooms: Mar-May Nevada & Placer Co.

Lower Conifer Forest

Glyceria grandis

“American Manna Grass”

Poaceae List: 2 R-E-D: 3-1-1

Blooms: Jun-Aug Placer Co.

Bogs/Fens, Foothill Riparian

Gratiola heterosepala

“Boggs Lake Hedge-hyssop”

Scrophulariaceae List: 1B R-E-D: 1-2-2

Blooms: Apr-Aug Placer Co.

Foothill Riparian

Ivesia sericoleuca

“Plumas Ivesia”

Rosaceae List: 1B R-E-D: 1-2-3

Blooms: May-Sep Nevada & Placer Co.

Sagebrush-Pine

Juncus hemiendytus var. abjectus

“Center Basin Rush”

Juncaceae List: 4 R-E-D: 1-1-1

Blooms: Jun-Jul Nevada Co.

Montane Meadow, Subalpine

Juncus leiospermus var. ahartii

“Ahart’s Dwarf Rush”

Juncaceae List: 1B R-E-D: 3-2-3

Blooms: Mar-May Placer Co.

Vernal Pools, Foothill Riparian

Juncus leiospermus var. leiospermus

“Red Bluff Dwarf Rush”

Juncaceae List: 1B R-E-D: 2-2-3

Blooms: Mar-May Placer Co.

Vernal Pools, Wet Places

Juncus marginatus var. marginatus

“Red-anthered Rush”

Juncaceae List: 2 R-E-D: 3-2-1

Blooms: Jul Nevada Co.

Montane Meadow & Riparian

Lathyrus sulphureus var. argillaceus

“Dubious Pea”

Fabaceae List: 3 R-E-D: 3-?-3

Blooms: Apr Nevada & Placer Co.

Lower Conifer Forest

Legenere limosa

“Legenere”

Campanulaceae List: 1B R-E-D: 2-3-3

Blooms: Apr-Jun Placer Co.

Vernal Pools, Foothill Riparian

Lewisia cantelovii

“Cantelow’s Lewisia”

Portulacaceae List: 1B R-E-D: 2-2-3

Blooms: May-Oct Nevada Co.

Lower Conifer Forest & Chaparral

Lewisia kelloggii ssp. hutchisonii

“Kellogg’s Lewisia”

Portulacaceae List: 3 R-E-D: ?-1-3

Blooms: Jun-Aug Placer Co.

Upper Conifer Forest, Subalpine

Lewisia longipetala

“Long-petaled Lewisia”

Portulacaceae List: 1B R-E-D: 3-1-3

Blooms: Jul-Aug Nevada Co.

Subalpine/Alpine

Lewisia serrata

“Saw-toothed Lewisia”

Portulacaceae List: 1B R-E-D: 3-3-3

Blooms: May-Jun Placer Co.

Lower Conifer Forest, Montane Riparian

Lilium humboldtii ssp. humboldtii

“Humboldt Lily”

Liliaceae List: 4 R-E-D: 1-2-3

Blooms: Jun-Jul Nevada & Placer Co.

Lower Conifer Forest

Lycopodiella inundata

“Bog Club-moss”

Lycopodiaceae List: 2 R-E-D: 3-2-1

Blooms: Sep Nevada Co.

Bogs/Fens, Lower Conifer Forest

Lycopus uniflorus

“Northern Bugleweed”

Lamiaceae List: 4 R-E-D: 1-1-1

Blooms: Jul-Sep Nevada Co.

Bogs/Fens

Microseris sylvatica

“Sylvan Microseris”

Asteraceae List: 4 R-E-D: 1-2-3

Blooms: Mar-Jun Nevada & Placer Co.

Foothill Woodland & Grassland

Mimulus glaucescens

“Shield-bracted Monkeyflower”

Scrophulariaceae List: 4 R-E-D: 1-1-3

Blooms: Feb-Aug Nevada Co.

Foothill Grassland, Chaparral, Lower Conifer Forest

Monardella candicans

“Sierra Monardella”

Lamiaceae List: 4 R-E-D: 1-1-3

Blooms: Apr-Jul Nevada & Placer Co.

Foothill Chaparral & Woodland

Monardella follettii

“Follett’s Monardella”

Lamiaceae List: 1B R-E-D: 3-2-3

Blooms: Jun-Jul Nevada Co.

Serpentine/Gabbro Chaparral

Muhlenbergia jonesii

“Jone’s Muhlenbergia”

Poaceae List: 4 R-E-D: 1-?-3

Blooms: Jul-Aug Placer Co.

Lower Conifer Forest

Navarretia eriocephala

“Hoary Navarretia”

Polemoniaceae List: 4 R-E-D: 1-1-3

Blooms: May-Jun Placer Co.

Foothill Woodland & Grassland

Navarretia prolifera ssp. lutea

“Yellow Bur Navarretia”

Polemoniaceae List: 4 R-E-D: 1-1-3

Blooms: May-Jul Placer Co.

Foothill Chaparral & Woodland

Penstemon personatus

“Closed-throated Beardtongue”

Scrophulariaceae List: 1B R-E-D: 2-2-3

Blooms: Jul-Sep Nevada Co.

Upper & Lower Conifer Forest, Montane Chaparral

Perideridia bacigalupii

“Bacigalupi’s Yampah”

Apiaceae List: 4 R-E-D: 1-2-3

Blooms: Jun-Aug Nevada Co.

Serpentine/Gabbro Chaparral

Phacelia stebbinsii

“Stebbins’s Phacelia”

Hydrophyllaceae List: 1B R-E-D: 2-2-3

Blooms: Jun-Jul Nevada & Placer Co.

Lower Conifer Forest

Piperia colemanii

“Coleman’s Rein Orchid”

Orchidaceae List: 4 R-E-D: 1-1-3

Blooms: Jun-Aug Placer Co.

Lower Conifer Forest, Montane Chaparral

Piperia liptopetala

“Narrow-petaled Rein Orchid”

Orchidaceae List: 4 R-E-D: 1-1-3

Blooms: May-Jul Nevada Co.

Lower & Upper Conifer Forest

Plagiobothrys glyptocarpus var. modestus

“Cedar Crest Popcorn-flower”

Boraginaceae List: 3 R-E-D: 3-?-3

Blooms: Apr-May Nevada Co.

Lower Conifer Forest

Podistera nevadensis

“Sierra Podistera”

Apiaceae List: 4 R-E-D: 1-1-3

Blooms: Jul-Sep Placer Co.

Subalpine

Potamogeton robbinsii

“Robbins’s Pondweed”

Potamogetonaceae List: 2 R-E-D: 2-1-1

Blooms: Jul-Aug Nevada Co.

Lakes

Rhynchospora alba

“White Beaked-rush”

Cyperaceae List: 2 R-E-D: 2-2-1

Blooms: Jul-Aug Nevada Co. ?

Bogs/Fens

Rhynchospora capitellata

“Brownish Beaked-rush”

Cyperaceae List: 2 R-E-D: 2-2-1

Blooms: Jul-Aug Nevada Co.

Lower Conifer Forest, Montane Meadow

Rorippa subumbellata

“Tahoe Yellow Cress”

Brassicaceae List: 1B R-E-D: 3-3-2

Blooms: May-Sep Nevada(extirpated) & Placer Co.

Montane Meadow, Upper Conifer Forest

Scutellaria galericulata

“Marsh Skullcap”

Lamiaceae List: 2 R-E-D: 2-2-1

Blooms: Jun-Sep Nevada & Placer Co.

Lower Conifer Forest, Montane Meadow

Sidalcea stipularis

“Scadden Flat Checkerbloom”

Malvaceae List: 1B R-E-D: 3-3-3

Blooms: Jul-Aug Nevada Co.

Bogs/Fens

Sparganium natans

“Small Bur-reed”

Typhaceae List: 4 R-E-D: 1-1-1

Blooms: Jul-Aug Placer Co.

Montane Meadow

Sphaeralcea munroans

“Munroe’s Desert-mallow”

Malvaceae List: 2 R-E-D: 3-2-1

Blooms: May-Jul Placer Co.

Upper Conifer Forest

Trifolium lemmonii

“Lemmon’s Clover”

Fabaceae List: 4 R-E-D: 2-2-2

Blooms: May-Jul Nevada Co.

Sagebrush-Pine

Utricularia minor

“Lesser Bladderwort”

Lentibulariaceae List: 4 R-E-D: 1-2-1

Blooms: Jul-Aug Nevada Co.

Bogs/Fens

Veronica cusickii

“Cusick’s Speedwell”

Scrophulariaceae List: 4 R-E-D: 1-1-1

Blooms: Jul-Aug Placer Co.

Subalpine, Upper Conifer Forest

Viola tomentosa

“Woolly Violet”

Violaceae List: 4 R-E-D: 1-2-3

Blooms: May-Oct Nevada & Placer Co.

Lower Conifer Forest

California or Federally Listed Plants

The following plants are officially listed by California or the Federal Government as Endangered, Threatened, or Rare; or are candidates for listing.

Calystegia stebbinsii

Federal: Endangered

State: Endangered

Fremontodendron decumbens

Federal: Endangered

State: Rare

Gratiola heterosepala

Federal: None

State: Endangered

Rorippa subumbellata

Federal: Candidate

State: Endangered

Sidalcea stipularis

Federal: None

State: Endangered

Environmental Documents

All of the plants constituting CNPS Lists 1A, 1B, and 2 meet the definitions of Sec. 1901, Chapter 10 (Native Plant Protection Act) or Secs. 2062 and 2067 (California Endangered Species Act) of the California Department of Fish and Game Code, and are eligible for state listing. It is mandatory that they be fully considered during preparation of environmental documents relating to the California Environmental Quality Act (CEQA).

Some of the plants constituting CNPS List 3 meet the definitions of Sec. 1901, Chapter 10 (Native Plant Protection Act) or Secs. 2062 and 2067 (California Endangered Species Act) of the California Department of Fish and Game Code, and are eligible for state listing. The California Department of Fish and Game, Natural Diversity Database strongly recommends that List 3 plants be evaluated for consideration during preparation of environmental documents relating to CEQA.

Reference: California Department of Fish and Game, Natural Diversity Database. July, 2001. Special Vascular Plants, Bryophytes, and Lichens List. Biannual publication, Mimeo. 141 pp.

CNPS. 2001. Inventory of Rare and Endangered Plants of California (sixth edition). Rare Plant Scientific Advisory Committee, David P. Tibor, Convening Editor. California Native Plant Society. Sacramento, CA. x+388pp.