Eriogonum umbellatum var. bahiiforme

Small's sulphur flower, bay buckwheat

Family:Polygonaceae

Rarity

CNPS-EB: *A2
State CNPS: 4.2
Global Rank: G5T3
CNDDB Rank: S3

13 current natural populations

Criteria:

Limited/Threatened Habitat

Observations

Key

Ecology

Flowers July - September

Habitats:

Rock, Tallus, Scree
Serpentine or Serpentine-derived soils

All Eriogonum

References

Synonyms

Eriogonum polyanthum var. bahiiforme
Eriogonum stellatum var. bahiiforme
Eriogonum trichotomum
Eriogonum umbellatum subsp. bahiiforme

Populations

Key

Location	Pop ID	Last Recorded	Notes
Cedar Mountain	1	2005-07-16
Los Vaqueros Watershed	9	2022-04-10
Morgan Territory - other or unknown sites	7	2005-04-30
Morgan Territory - other or unknown sites	8	2005-05-29
Mt. Diablo State Park - East side	15	2023-03-18
Mt. Diablo State Park - East side	16	2023-03-11
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	2	2021-06-12
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	3	2009-06-16
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	4	2009-06-16
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	6	2014-12-31
Ohlone Rgnl Wilderness	12	2024-08-02
Ohlone Rgnl Wilderness	14	2020-04-24
Ohlone Rgnl Wilderness	17	2021-04-08
Los Mochos Boy Scout Camp, Mines Rd	10	1996-12-31	Historic
Man Ridge, Mines Rd.	11	1985-12-31	Historic
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	5	1996-04-14	Historic
Niles Canyon area	13	1888-12-31	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.