CNPS

CNPS Rare Plant Inventory

Species Details

Arabis modesta

modest rockcress

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Photo of Arabis modesta
©2014 Scot Loring 		Photo of Arabis modesta
©2013 Scot Loring 		Photo of Arabis modesta
©2021 Scot Loring

  Classification

Scientific Name:
Arabis modesta Roll.
Common Name:
modest rockcress
Family: Brassicaceae
Element Code: PDBRA06180
USDA Plants Symbol: ARMO
Synonyms/Other Names:

  Conservation Status

CA Rare Plant Rank: 4.3
Fed List: None
State List: None
Global Rank: G3
State Rank:
 S3
Other Status:
CRPR Changes:
Add Date: 1974-01-01
Date Edited: 2021-05-26

  Ecology and Life History

Lifeform: perennial herb
Blooming Period: Mar-Jul
JFMAMJJASOND
Elevation:
120 - 800 meters
395 - 2625 feet
General Habitats:
  • Chaparral
  • Lower montane coniferous forest
Microhabitat Details:
Microhabitat:

  Notes

Notes:
Intergrades with A. oregana in SIS Co.; may be a variety of that plant. Endangered in OR. See Rhodora 43(511):350-352 (1941) for taxonomic treatment, and Contributions from the Gray Herbarium 204:149-154 (1973) for taxonomic information.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 0
Total EOs % of EOs
EOs with Threat Listed: 0 0 %
THREAT LIST:

  Occurrence Data from the CNDDB

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

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA), Oregon (OR)
California Counties and Islands: Name (Code)
Lake (LAK), Napa (NAP), Siskiyou (SIS), Solano (SOL), Trinity (TRI)
Quads: Name (Quad Code)
Dedrick (4012371), Forks of Salmon (4112333), Hamburg (4112371), Hayfork Bally (4012362), Helena (4012372), Horse Creek (4112278), Ironside Mtn. (4012374), Jericho Valley (3812274), Kangaroo Mtn. (4112382), Knoxville (3812273), Monticello Dam (3812251), Mt. George (3812232), Orleans Mtn. (4112334), Preston Peak (4112375), Seiad Valley (4112372), Somes Bar (4112344), Youngs Peak (4112323)
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. 2024. Rare Plant Inventory (online edition, v9.5). Website https://www.rareplants.cnps.org [accessed 21 November 2024].