Poa howellii

Rarity

CNPS-EB: A2

7 current natural populations

Criteria:

Declining

Observations

Key

Ecology

Flowers April - June

Habitats:

Chaparral
Rock, Tallus, Scree
Woodland

All Poa

P. douglasii (A1x)
P. howellii

References

Synonyms

Poa bolanderi var. howellii

Populations

Key

Location	Pop ID	Last Recorded	Notes
Alhambra Valley	15	2006-05-04
Briones Rgnl Park	22	2023-05-14
Los Mochos Boy Scout Camp, Mines Rd	21	2023-05-20
Mt. Diablo State Park - North side	9	2022-04-23
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	8	2022-05-12
Round Valley Rgnl Park	19	2021-05-10
San Francisco Water District land, Sunol	23	2021-05-28
Berkeley Hills	1	1937-12-31	Historic
Canyon Area	11	1929-03-15	Historic
Claremont Canyon Rgnl Park	2	1956-12-31	Historic
Del Valle Regional Park	10	1991-05-08	Historic
Huckleberry Rgnl Preserve	12	1985-12-31	Historic
Lake Temescal Rgnl Park	20	1959-05-27	Historic
Las Trampas Rgnl Wilderness	13	1990-12-31	Historic
Marsh Creek - other or unknown sites	14	1938-12-31	Historic
Mt. Diablo State Park - East side	3	1957-04-11	Historic
Mt. Diablo State Park - South side	5	1933-05-21	Historic
Mt. Diablo State Park - South side	6	1933-05-22	Historic
Mt. Diablo State Park - South side	7	1933-04-22	Historic
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	4	1984-05-09	Historic
Red Rock Island	17	1936-12-31	Historic
Redwood Rgnl Park	16	1981-05-31	Historic
Strawberry Canyon	18	1933-12-31	Historic

The list of populations shows the distinct populations identified by the CNPS-EB Rare and Unusual Plants Committee. The locations in this list are very general. More specific location details can be obtained from the links in the Observations section (for some of these links, a login is required).

Font

Populations in bold type have precise coordinates available for field volunteers and researchers.

Populations in normal type are only known from a description of the location; no precise coordinates are available.

Background

Populations with a white background have been observed in the last 25 years.

Populations with a blue background have not been observed for at least 25 years.

Populations with an orange background have an uncertain location or identification, or are planted.

Columns

Pop ID is a label that identifies the population. Many locations have more than one population of a species, and the population ID is used to distinguish them.