CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record dimeresia_howellii - Sat, Dec. 4, 2021, 21:06 ET b
Dimeresia howellii
common namedoublet
CalPhotos image
more photos
Rick York © 1982 CNPS  Follow image link for photo data.
life formannual herb
CA Rare Plant Rank
List 2B.3
LIST 2B: Rare, threatened, or endangered in California, but more common elsewhere.
     0.3: Not very endangered in California
state rank
S3      ranking system key
global rank
G4?      ranking system key
Where did the "RED" code go?
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (22):
Sheepshead (659D) 4012077, Emerson Peak (673B) 4112022, Ash Valley (675C) 4112016, Adin (676B) 4112028, Letterbox Hill (676C) 4112018, Lane Reservoir (676D) 4112017, Warren Peak (690B) 4112042, Eagle Peak (690C) 4112032, Alturas (692A) 4112045, Rattlesnake Butte (692B) 4112046, Infernal Caverns (692D) 4112035, Lake City (707B) 4112062, Cedarville (707C) 4112052, Payne Peak (708D) 4112053, Mahogany Ridge (709D) 4112055, Caldwell Butte (712B) 4112164, Schonchin Butte (713A) 4112165, Bonita Butte (713B) 4112166, Lake Annie (724A) 4112081, Mount Bidwell (724B) 4112082, Larkspur Hills (724D) 4112071, Willow Ranch (725A) 4112083
quad data info

Counties, states, regions:
Lassen (LAS), Modoc (MOD), Siskiyou (SIS), Idaho (ID), Nevada (NV), Oregon (OR)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Lower montane coniferous forest (LCFrs)
•Pinyon and juniper woodland (PJWld)/volcanic, xeric
blooming period May-Sep  
elevation range1340 - 2380 meters
Possibly threatened by foot traffic and grazing. Threatened in ID. See Synoptical Flora of North America ed. 2, 1(2):449 (1886) for original description, and Fremontia 16(1):15-17 (1988) for brief species account and BLM management plans.
full nameDimeresia howellii Gray
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  DIHO2 Element Code  PDAST2Z010
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 Sat, Dec. 4, 2021 from

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