Species Details

Nama demissa var. covillei

Coville's purple mat

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Scientific Name:
Nama demissa A. Gray var. covillei Brand
Common Name:
Coville's purple mat
Family: Namaceae
Element Code: PDHYD0A031
USDA Plants Symbol:
Synonyms/Other Names:
CA Rare Plant Rank: 1B.3
Fed List: None
State List: None
Global Rank: G5T3
State Rank:
Other Status: BLM_S
CRPR Changes:
added to 1B.3 on 2018-05-30
Add Date: 2018-05-30
Date Edited: 2021-06-03
Lifeform: annual herb
Blooming Period: Feb-May
-85 - 1800 meters
-280 - 5905 feet
General Habitats:
  • Mojavean desert scrub
Microhabitat Details:
  • Dry
  • Flats
  • Roadsides (often)
  • Sandy
  • Slopes

Potentially threated by road construction and maintenance. Possibly threatened by erosion, which might be exacerbated by climate shifts. Often misidentified as var. demissa. Leaf attachment and shape are primary differentiating characters between varieties, but these traits can be variable and substrate might be a better indicator of differentiation; needs further study. See Das Pflanzenreich IV. 251(59): 159 (1913) for original description, and American Journal of Botany 20(8): 518-534 (1933) for taxonomic treatment.

Total Occurrences: 25
Element Occurrence Ranks:
0 0 0 0 0 25
Occurrence Status:
Historical >20 Years 12
Recent <=20 Years 13
Presumed Extant 25
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Inyo (INY), San Bernardino (SBD)
Quads: Name (Quad Code)
Avawatz Pass (3511654), Beatty Junction (3611658), Chloride City (3611668), Dantes View (3611626), Devils Golf Course (3611637), Dumont Dunes (3511662), Echo Canyon (3611646), Epaulet Peak (3511685), Furnace Creek (3611647), Gold Valley (3611616), Grotto Canyon (3611751), Ivanpah (3511533), Kingston Peak (3511568), Resting Spring (3511682), Ryan (3611636), Saddle Peak Hills (3511663), Scottys Castle (3711713), Shoshone (3511683), Sixmile Spring (3611621), Stewart Valley (3611622), Stovepipe Wells NE (3611761), Thimble Peak (3611771), Twelvemile Spring (3611612), Ubehebe Crater (3711714)
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.
Presumed Extant
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