Species Details

Agrostis blasdalei

Blasdale's bent grass

View Report Copy Link Calflora eFlora CCH CalPhotos iNaturalist

Species Description:

Agrostis blasdalei, commonly known as Blasdale's bent grass, is a perennial rhizomatous herb in the Poaceae that is found only in California. It occurs within Coastal bluff scrub, Coastal dunes, and Coastal prairie, growing at elevations from 0 to 150 meters. Agrostis blasdalei is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Agrostis blasdalei Hitchc.
Common Name: Blasdale's bent grass
Family:	Poaceae
Element Code:	PMPOA04060
USDA Plants Symbol:	AGBL
Synonyms/Other Names: Agrostis blasdalei Hitchc. var. blasdalei Agrostis blasdalei Hitchc. var. marinensis Crampt.
Name Status:	JEP, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G2G3
State Rank:	S2
Other Status:	BLM_S; SB_UCSC
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2022-08-02

Ecology and Life History

Lifeform: perennial rhizomatous herb

Blooming Period: May-Jul

Elevation:
0 - 150 meters
0 - 490 feet

General Habitats:

Coastal bluff scrub
Coastal dunes
Coastal prairie

Microhabitat Details:

Microhabitat:

Notes

Notes: Historical occurrences need field surveys. Threatened by agriculture, recreation, development, and competition from non-native plants. Includes A. blasdalei var. marinensis, which is state-listed Rare.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	12
	Total EOs	% of EOs
EOs with Threat Listed:	27	44 %
Non-native plant impacts	12	19%
Grazing	8	12%
Erosion/runoff	6	9%
Foot traffic/trampling	6	9%
Recreational use (non-ORV)	4	6%
Road/trail construction/maint.	4	6%
Other	3	4%
Development	3	4%
Mining	2	3%
Disease	1	1%
Agriculture	1	1%
Altered flood/tidal/hydrologic regime	1	1%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					62
A	B	C	D	X	U
1	13	13	3	0	32

Occurrence Status:
Historical >20 Years	45
Recent <=20 Years	17

Presence:
Presumed Extant	62
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Marin (MRN), Mendocino (MEN), Monterey (MNT), San Mateo (SMT), Santa Cruz (SCR), Sonoma (SON)

Quads: Name (Quad Code)
Albion (3912327), Ano Nuevo (3712213), Big Sur (3612137), Bodega Head (3812331), Davenport (3712212), Drakes Bay (3812218), Duncans Mills (3812341), Elk (3912326), Fort Bragg (3912347), Fort Ross (3812352), Gualala (3812375), Inverness (3812217), Mendocino (3912337), Montara Mountain (3712254), Pigeon Point (3712224), Plantation (3812353), Point Arena (3812386), Point Sur (3612138), Santa Cruz (3612281), Saunders Reef (3812376), Stewarts Point (3812364), Tomales (3812228), Valley Ford (3812238), Westport (3912367)

Notes:

Definitions of codes following a county and/or quad:
*		Presumed extirpated
(?)		Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Regional Map

Map

Presumed Extant

Click on quad for name. Hold Shift Key to use mouse scroll wheel

CNPS Rare Plant Inventory