Species Details

Agrostis lacuna-vernalis

vernal pool bent grass

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Species Description:

Agrostis lacuna-vernalis, commonly known as vernal pool bent grass, is a annual herb in the Poaceae that is found only in California. It occurs within Vernal pools, growing at elevations from 115 to 145 meters. Agrostis lacuna-vernalis is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification

Scientific Name: Agrostis lacuna-vernalis P.M. Peterson & Soreng
Common Name: vernal pool bent grass
Family:	Poaceae
Element Code:	PMPOA041N0
USDA Plants Symbol:	AGLA
Synonyms/Other Names:
Name Status:	JEP, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.1
Fed List:	None
State List:	None
Global Rank:	G1
State Rank:	S1
Other Status:	BLM_S; SB_SBBG
CRPR Changes: added to 1B.1 on 2012-06-14
Add Date:	2012-06-14
Date Edited:	2022-02-01

Ecology and Life History

Lifeform: annual herb

Blooming Period: Apr-May

Elevation:
115 - 145 meters
375 - 475 feet

General Habitats:

Vernal pools (mima mounds)

Microhabitat Details:

Microhabitat:

Notes

Notes: Known only from Butterfly Valley and Machine Gun Flats of Ft. Ord National Monument. Possibly threatened by non-native plants, road construction, vehicles, grazing, and hydrological alterations. Similar to A. blasdalei, A. densiflora, and A. variabilis. Not in TJM 2. See Journal of the Botanical Research Institute of Texas 5(2):421-426 (2011) for original description.
Threats: Possibly threatened by non-native plants, road construction, vehicles, grazing, and hydrological alterations.
Taxonomy: Similar to A. blasdalei, A. densiflora, and A. variabilis. Not in TJM 2.

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	0
	Total EOs	% of EOs
EOs with Threat Listed:	0	%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					3
A	B	C	D	X	U
0	0	0	0	0	3

Occurrence Status:
Historical >20 Years	0
Recent <=20 Years	3

Presence:
Presumed Extant	3
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Monterey (MNT)

Quads: Name (Quad Code)
Salinas (3612166)

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

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CNPS Rare Plant Inventory