Taxon  Report   5462 
Micropus amphibolus  A. Gray
Mount diablo cottonseed,  Mt. diablo cottonweed
Micropus amphibolus
© 2008 Aaron Arthur
More photos from
CalPhotos / Calflora
Micropus amphibolus
© 2008 Aaron Arthur
Micropus amphibolus, a dicot, is an annual herb that is native to California and is endemic (limited) to California.
formerly Stylocline amphibola
CNPS Rare Plant Rank: 3.2 (review list).   8th Edition

Interactive Distribution Map

Observation Hotline
(observation details + photos)

point, line, or polygon

one or more occurrences
within a 7.5-minute quadrangle

Plant Characteristics
and Associations

Bloom Period
Micropus amphibolus
© 2008 Aaron Arthur
Genus: Micropus
Valley Grassland, Foothill Woodland, Mixed Evergreen Forest
AFFINITY to serpentine soil:   2.4 (weak indicator)   [Safford et al 2005]
Distribution by County 

Add an Observation of  Micropus amphibolus

Name Status:
Accepted by JEF + CNPS + PLANTS + JM93
Alternate Names:
(according to)

PLANTS: Micropus amphibola
PLANTS: Stylocline amphiloba
CNPS + PLANTS: Stylocline amphibola
More information about  Micropus amphibolus
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on CalPhotos / Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation


Search the International Plants Names Index

Search (Flora of North America)

Search the Lady Bird Johnson Wildflower Center

website references from Google

Suggested Citation
Calflora: Information on California plants for education, research and conservation,
with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria.
[web application]. 2018. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Jun 23, 2018).

The information on this page comes from diverse sources. None of the links are sponsored.