CNPS Inventory Plant Detail

Pentachaeta exilis ssp. aeolica

Common Name:	San Benito pentachaeta
Family:	Asteraceae
Synonyms:
Element Code:	PDAST6X041
Full Name:	Pentachaeta exilis (Gray) Gray ssp. aeolica Van Horn & Ornduff
USDA PLANTS Symbol:	PEEXA

Biology
Lifeform: annual herb Blooming Period: March - May Habitat: • Cismontane woodland • Valley and foothill grassland

Rarity Status
CA Rare Plant Rank: 1B.2 Rare, threatened, or endangered in California and elsewhere .2: Fairly endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed State Rank: S1 S1: Critically Imperiled. Global Rank: G5T1 T1: Critically Imperiled. G5: (species) Secure, considering populations outside California.

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 6
Element Occurrence Ranks:

A B C D X U

0 3 0 0 0 3

Population Status:

Historic >20 yrs	Recent <=20 yrs
3	3

Presence:

Present Extant	Possibly Extirpated	Extirpated
6	0	0

Notes
Threatened by vehicles and grazing. Potentially threatened by foot traffic. See University of California Publications in Botany 65:1-41 (1973) for taxonomic treatment. To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page. Date Added: 1980-01-01 Last Update: 2012-08-02

Location

Elevation: 640 - 855 meters

California Endemic: yes

States: California

California Counties and Islands: name (code)
Monterey (MNT), San Benito (SBT), Santa Clara (SCL)

Quads: name (DWR code) USGS code
Cone Peak (319C) 36121A4, San Benito Mtn. (339C) 36120C6, Hepsedam Peak (340D) 36120C7, Isabel Valley (426D) 37121C5

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

1242

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 .

-120.75,36.25