CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record neostapfia_colusana - Wed, Dec. 1, 2021, 07:07 ET b
Neostapfia colusana
common nameColusa grass
CalPhotos image
more photos
© 1999 John Game  Follow image link for photo data.
life formannual herb
CA Rare Plant Rank
List 1B.1
LIST 1B: Rare, threatened, or endangered in California and elsewhere.
     0.1: Seriously endangered in California
state rank
S1      ranking system key
global rank
G1     G1: Less than 6 occurrences OR less than 1,000 individuals OR less than 2,000 acres.
Where did the "RED" code go?
CA state listingEndangered  11/79
federal listingThreatened  03/26/97
where found
MAPS - Use v8 link below.

Topographic quads (22):
El Nido (401B)* 3712024, Sandy Mush (402A) 3712025, Turner Ranch (402B) 3712026, Owens Reservoir (420C) 3712032, Haystack Mountain (421A) 3712043, Yosemite Lake (421B) 3712044, Merced (421C) 3712034, Planada (421D) 3712033, Arena (422C) 3712036, Atwater (422D) 3712035, Cooperstown (441A) 3712065, Paulsell (441B) 3712066, Montpelier (441C) 3712056, Turlock Lake (441D) 3712055, Waterford (442A)* 3712067, Knights Ferry (459C) 3712076, Bachelor Valley (460A) 3712087, Antioch North (481D) 3812117, Saxon (497B) 3812146, Dozier (498D) 3812137, Princeton (562A)* 3912241, Logandale (562B) 3912242
quad data info

Counties, states, regions:
Colusa (COL)*, Glenn (GLE), Merced (MER), Solano (SOL), Stanislaus (STA), Yolo (YOL)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Vernal pools (VnPls)(adobe, large)
blooming period May-Aug  
elevation range5 - 200 meters
Threatened by agriculture, development, overgrazing, hydrological alterations, non-native plants, and habitat fragmentation and loss. See Erythea 6:110-113 (1898) for original description, Fremontia 4(3):22-23 (1976) for species account and habitat information, and Conservation Genetics (2011) pp. 1-14 for population genetic information.
full nameNeostapfia colusana (Davy) Davy
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  NECO2 Element Code  PMPOA4C010
CNPS chapter link chapter content  Sacramento Valley page for this species
CalFlora species this taxon    CalFlora genus related taxa
Jepson Online Jepson Interchange  Jepson Manual and other resources
Google search
search Google CNPS website    search Google entire web

Suggested citation: California Native Plant Society (CNPS). 2018. Inventory of Rare and Endangered Plants (online edition, v7-18mar). California Native Plant Society. Sacramento, CA. Accessed on Wed, Dec. 1, 2021 from

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