CNPS Inventory Plant Detail

Polygala acanthoclada

Common Name:	thorny milkwort
Family:	Polygalaceae
Synonyms:
Element Code:	PDPGL02020
Full Name:	Polygala acanthoclada Gray
USDA PLANTS Symbol:	POAC2

Biology
Lifeform: perennial shrub Blooming Period: May - August Habitat: • Chenopod scrub • Joshua tree woodland • Pinyon and juniper woodland

Rarity Status
CA Rare Plant Rank: 2.3 Rare, threatened, or endangered in California, but more common elsewhere .3: Not very endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed State Rank: S1 S1: Critically Imperiled. Global Rank: G4 G4: Apparently secure, considering populations outside California.

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 19
Element Occurrence Ranks:

A B C D X U

0 1 0 0 0 18

Population Status:

Historic >20 yrs	Recent <=20 yrs
5	14

Presence:

Present Extant	Possibly Extirpated	Extirpated
19	0	0

Notes
See Proceedings of the American Academy of Arts and Sciences 11:73 (1876) 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: 2001-01-01 Last Update: 2010-03-15

Location

Elevation: 760 - 2285 meters

California Endemic: no

States: California, Arizona, Utah

California Counties and Islands: name (code)
Imperial (IMP), Riverside (RIV), San Bernardino (SBD), San Diego (SDG)

Quads: name (DWR code) USGS code
Porcupine Wash (080D) 33115G7, Melville Lake (130A) 34116D5, Old Woman Springs (130B) 34116D6, Pinto Valley (200A) 35115B3, Castle Peaks (224C) 35115C2, Ivanpah (225D) 35115C3, Mescal Range (226A) 35115D5, Solomons Knob (227A) 35115D7

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

2022

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

Suggested Citation
California Native Plant Society (CNPS). Inventory of Rare and Endangered Plants (online edition, v8-01a). California Native Plant Society. Sacramento, CA. Accessed on .

-115.75,35.375