CNPS

CNPS Rare Plant Inventory

Species Details

Atriplex argentea var. hillmanii

Hillman's silverscale

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No Photo Available

  Classification

Scientific Name:
Atriplex argentea Nutt. var. hillmanii Jones
Common Name:
Hillman's silverscale
Family: Chenopodiaceae
Element Code: PDCHE04055
USDA Plants Symbol:
Synonyms/Other Names:

  Conservation Status

CA Rare Plant Rank: 2B.2
Fed List: None
State List: None
Global Rank: G5T4
State Rank:
 S2
Other Status:
CRPR Changes:
changed from 2.2 to 2B.2 on 2013-06-12
Add Date: 2001-01-01
Date Edited: 2021-08-25

  Ecology and Life History

Lifeform: annual herb
Blooming Period: Jun-Sep
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Elevation:
1200 - 1700 meters
3935 - 5580 feet
General Habitats:
  • Great Basin scrub
  • Meadows and seeps
Microhabitat Details:
Microhabitat:
  • Alkaline

  Notes

Notes:
See Contributions to Western Botany 11:21 (1903) for original description.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 0
Total EOs % of EOs
EOs with Threat Listed: 0 %
THREAT LIST:
No threats

  Occurrence Data from the CNDDB

Total Occurrences: 6
Element Occurrence Ranks:
A B C D X U
0 0 0 0 0 6
Occurrence Status:
Historical >20 Years 6
Recent <=20 Years 0
Presence:
Presumed Extant 6
Possibly Extirpated 0
Presumed Extirpated 0

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA), Nevada (NV), Oregon (OR)
California Counties and Islands: Name (Code)
Inyo (INY), Lassen (LAS), Modoc (MOD), Mono (MNO)
Quads: Name (Quad Code)
Blackrock (3611882), Calneva Lake (4012021), Cedarville (4112052), Chalfant Valley (3711853), Hansen Island (4112041), Karlo (4012053), Last Chance Range SW (3711716), Leonards Hot Springs (4112051), Warren Peak (4112042)
Notes:
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.
Regional Map

  Map

Presumed Extant
Click on quad for name. Hold Shift Key to use mouse scroll wheel

  Selected References

Suggested Citation:
California Native Plant Society, Rare Plant Program. 2023. Rare Plant Inventory (online edition, v9.5). Website https://www.rareplants.cnps.org [accessed 4 June 2023].