Micropus amphibolus

Mount Diablo cottonseed, Mt. Diablo cottonweed

Family:Asteraceae

Rarity

CNPS-EB: *A1x
State CNPS: 3.2
Global Rank: G3G4
CNDDB Rank: S3S4

No current natural populations

Observations

Key

Ecology

Flowers March - June

Habitats:

Grassland (Annual or Perennial)
Open Dry Slope
Rock, Tallus, Scree

All Micropus

M. amphibolus

M. californicus var. subvestitus (A2)

References

Synonyms

Stylocline amphibola

Populations

Key

Location	Pop ID	Last Recorded	Notes
Caldecott Corridor, Oakland	2	1955-05-04	Historic
Claremont Canyon Rgnl Park	3	1902-04-16	Historic
Leona Heights Rgnl Park, or nearby	4	1932-12-31	Historic
Mt. Diablo State Park - North side	8	1989-05-05	Historic
Pleasanton Ridge Rgnl Park	6	1995-12-31	ID Uncertain
Sobrante Ridge - S of Park	7	1999-12-31	ID Uncertain
Tilden Rgnl Park - other or unknown sites	1	1995-12-31	ID Uncertain
Walnut Creek	5	1869-12-31	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.