CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record agrostis_hendersonii - Thu, Dec. 2, 2021, 00:51 ET b
Agrostis hendersonii
common nameHenderson's bent grass
CalPhotos image
more photos
© 2005 Steve Matson  Follow image link for photo data.
life formannual herb
CA Rare Plant Rank
List 3.2
LIST 3: We need more information about this plant (Review List).
     0.2: Fairly endangered in California
state rank
S2      ranking system key
global rank
G2Q      ranking system key
Where did the "RED" code go?
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (19):
Haystack Mountain (421A) 3712043, Yosemite Lake (421B) 3712044, New Melones Dam (459A) 3712085, Wallace (477B)* 3812028, Mount George (499C) 3812232, Brush Creek (575A)? 3912163, Berry Creek (575B) 3912164, Corning (594B) 3912282, Henleyville (595A) 3912283, West Of Gerber (611D) 4012213, Tuscan Buttes NE (628A)? 4012241, Balls Ferry (628B) 4012242, Bend (628C) 4012232, Dales (628D) 4012231, Oak Run (646A) 4012261, Bella Vista (646B) 4012262, Palo Cedro (646C) 4012252, Project City (647A) 4012263, Enterprise (647D) 4012253
quad data info

Counties, states, regions:
Butte (BUT)?, Calaveras (CAL), Merced (MER), Napa (NAP), Shasta (SHA), Tehama (TEH), Tuolumne (TUO), Oregon (OR)*
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Valley and foothill grassland (VFGrs)(mesic)
•Vernal pools (VnPls)
blooming period Apr-Jun  
elevation range70 - 305 meters
Move to List 1B? Field surveys needed. Identity of BUT Co. plants remains questionable. One occurrence extirpated by construction of Comanche Reservoir; also threatened by development. Candidate for state listing in OR, but presumed extinct there. Very similar to A. microphylla; study needed. Chromosome distinction exists between these two taxa; see Bulletin of the Torrey Botanical Club 72:541-549 (1945) and Southwestern Naturalist 10:211-213 (1965) for information. See Journal of the Washington Academy of Sciences 20(15):381 (1930) for original description, Madroņo 3(6):230 (1936) for first CA record, and Leaflets of Western Botany 3(12):258 (1943) for second CA record.
full nameAgrostis hendersonii Hitchc.
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  AGHE3 Element Code  PMPOA040K0
CalFlora species this taxon    CalFlora genus related taxa
Jepson Online Jepson Interchange  Jepson Manual and other resources
Google search
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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 Thu, Dec. 2, 2021 from

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