CNPS Inventory Plant Detail

Polygala subspinosa

Common Name:	spiny milkwort
Family:	Polygalaceae
Synonyms:
Element Code:	PDPGL021Q0
Full Name:	Polygala subspinosa Wats.
USDA PLANTS Symbol:	POSU2

Biology
Lifeform: perennial herb Blooming Period: May - August Habitat: gravelly, rocky. • Great Basin scrub • Pinyon and juniper woodland

Rarity Status
Rare Plant Rank: 2.2 Rare, threatened, or endangered in California, but more common elsewhere .2: Fairly endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed State Rank: S3 S3: Vulnerable. Global Rank: G4? G4: Apparently secure, considering populations outside California.

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 67
Element Occurrence Ranks:

A B C D X U

4 25 5 7 0 26

Population Status:

Historic >20 yrs	Recent <=20 yrs
22	45

Presence:

Present Extant	Possibly Extirpated	Extirpated
67	0	0

Notes
Known in CA only from the Secret Valley area. Possibly threatened by pipeline construction. See American Naturalist 7:299 (1873) for original description. To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page. Date Added: 1984-01-01 Last Update: 2010-03-15

Location

Elevation: 1330 - 1705 meters

California Endemic: no

States: California, Arizona, Colorado, New Mexico, Nevada, Utah

California Counties and Islands: name (code)
Lassen (LAS), Mono (MNO)

Quads: name (DWR code) USGS code
Risue Canyon (504C) 38119E4, Coleville (505D) 38119E5, Bull Flat (620A) 40120D1, Little Mud Flat (620B) 40120D2, Spencer Creek (620D) 40120C1, Shaffer Mtn. (621A) 40120D3, Litchfield (621B) 40120D4, Al Shinn Canyon (638A) 40120F1, Shinn Mtn. (638B) 40120F2, Five Springs (638C) 40120E2, Cherry Mtn. (638D) 40120E1, Snowstorm Mtn. (639A) 40120F3, Karlo (639D) 40120E3

Notes:

Definitions of codes preceding a county and/or quad:
*		Presumed extirpated
?		Uncertain about distribution or identity
?*		Uncertain about distribution, but presumed extirpated if once present
(?)		Occurrence confirmed, but possibly extirpated

Species may be present in other areas where conditions are favorable.

Presumed Extant

Presumed Extirpated or Unknown

1394

Links to Leading Resources of Taxon Information
USDA PLANTS Calflora CalPhotos Consortium of California Herbaria California Department of Fish and Wildlife: CNDDB Quick Viewer

Suggested Citation
California Native Plant Society (CNPS). Inventory of Rare and Endangered Plants (online edition, v8-02). California Native Plant Society. Sacramento, CA. Accessed on .

-120.0,40.25