Pentachaeta alsinoides

Rarity

CNPS-EB: B-PV

19 current natural populations

Observations

Key

Ecology

Flowers March - June

Habitats:

Grassland (Annual or Perennial)

All Pentachaeta

P. alsinoides
P. exilis subsp. exilis (A1)

References

Synonyms

Chaetopappa alsinoides

Populations

Key

Location	Pop ID	Last Recorded	Notes
Briones Rgnl Park	27	2024-04-28
Knowland Park, Oakland	25	2023-05-21
Las Trampas Rgnl Wilderness	13	2024-04-28
Las Trampas Rgnl Wilderness	23	2023-05-20
Las Trampas Rgnl Wilderness	24	2023-06-03
Las Trampas Rgnl Wilderness	28	2024-04-28
Lime Ridge area	11	2001-04-08
Lime Ridge area	26	2023-05-12
Morgan Territory Rgnl Park	14	2006-06-14
Mt. Diablo State Park - East side	7	2005-05-06
Mt. Diablo State Park - East side	29	2024-05-21
Mt. Diablo State Park - North side	22	2023-05-09
Mt. Diablo State Park - South side	8	2006-05-19
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	9	2014-05-03
Ohlone Rgnl Wilderness	18	2020-04-23
Ohlone Rgnl Wilderness	19	2020-04-22
Ohlone Rgnl Wilderness	20	2021-04-22
Pleasanton Ridge Rgnl Park	21	2022-03-17
San Leandro Reservoir - EBMUD	17	2006-06-06
Berkeley Hills	1	1900-12-31	Historic
Black Diamond - Nortonville	2	1936-04-19	Historic
Lafayette - other or unknown sites	10	1932-04-15	Historic
Lime Ridge area	12	1995-04-27	Historic
Marsh Creek - other or unknown sites	15	1940-04-30	Historic
Martinez - other or unknown sites	16	1889-04-16	Historic
Mt. Diablo State Park - East side	3	1933-03-18	Historic
Mt. Diablo State Park - South side	4	1939-12-31	Historic
Mt. Diablo State Park - West side	5	1935-05-01	Historic
Mt. Diablo State Park - West side	6	1931-04-11	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.