Taxon  Report   5850    
Neostapfia colusana  (Burtt Davy) Burtt Davy
Colusa grass,  Colusagrass
Neostapfia colusana
© Rick York and CNPS
Photos from
CalPhotos / Calflora
Neostapfia colusana, a monocot, is an annual grass that is native to California, is endemic (limited) to California.
CNPS Rare Plant Rank: 1B.1 (rare, threatened, or endangered in CA and elsewhere).   8th Edition

It is listed by the State of California as Endangered and by the Federal Government as 'Threatened '.

Interactive Distribution Map

Observation Hotline
(observation details)

point, line, or polygon

one or more occurrences
within a 7.5-minute quadrangle

Plant Characteristics
and Associations

Bloom Period
Neostapfia colusana
© 2009 Doug Wirtz
Family: POACEAE  
Genus: Neostapfia
Communities: Valley Grassland, Freshwater Wetlands, wetland-riparian

Wetlands: Occurs in wetlands

Habitat: vernal-pools

Name Status:
Accepted by JEF + CNPS + PLANTS

Alternate Names:
PLANTS: Anthochloa colusana
PLANTS: Davyella colusana
ICPN + PLANTS: Stapfia colusana
More information about  Neostapfia colusana
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on   /   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)

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]. 2019. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: Jan 20, 2019).