Species Details

Asclepias nyctaginifolia

Mojave milkweed

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Scientific Name:
Asclepias nyctaginifolia Gray
Common Name:
Mojave milkweed
Family: Apocynaceae
Element Code: PDASC02190
USDA Plants Symbol: ASNY
Synonyms/Other Names:
CA Rare Plant Rank: 2B.1
Fed List: None
State List: None
Global Rank: G4?
State Rank:
S2
Other Status:
CRPR Changes:
changed from 2.1 to 2B.1 on 2013-06-12
changed from 2.3 to 2.1 on 2009-03-10
Add Date: 2001-01-01
Date Edited: 2021-05-26
Lifeform: perennial herb
Blooming Period: May-Jun
Elevation:
875 - 1700 meters
2870 - 5580 feet
General Habitat:
  • Mojavean desert scrub
  • Pinyon and juniper woodland
General Micro Habitat:
Micro Habitat:
Notes:
Threatened by solar energy development, road widening, and road maintenance. See Proceedings of the American Academy of Arts and Sciences 12:69 (1876) for original description, and Annals of the Missouri Botanical Garden 41:155-156 (1954) for taxonomic treatment.
Threats:
Taxonomy:
Other:
Total Occurrences: 67
Element Occurrence Ranks:
A B C D X U
1 6 12 14 0 34
Occurrence Status:
Historical >20 Years 4
Recent <=20 Years 63
Presence:
Presumed Extant 67
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
Arizona (AZ), California (CA), Nevada (NV), New Mexico (NM)
California Counties and Islands: Name (Code)
San Bernardino (SBD)
Quads: Name (Quad Code)
Cajon (3411734), Castle Peaks (3511532), Clark Mtn. (3511555), East of Grotto Hills (3511521), Grotto Hills (3511522), Hackberry Mountain (3511512), Hart Peak (3511531), Ivanpah Lake (3511554), Mescal Range (3511545), Pachalka Spring (3511556), Pinto Valley (3511523), Valley Wells (3511546)
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.

Map

Presumed Extant
Counties   Quads