Species Details

Pediomelum castoreum

Beaver Dam breadroot

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Scientific Name:
Pediomelum castoreum (Wats.) Rydb.
Common Name:
Beaver Dam breadroot
Family: Fabaceae
Element Code: PDFAB5L050
USDA Plants Symbol: PECA24
Synonyms/Other Names:
CA Rare Plant Rank: 1B.2
Fed List: None
State List: None
Global Rank: G3
State Rank:
Other Status: BLM_S; SB_CalBG/RSABG
CRPR Changes:
changed from 4.3 to 1B.2 on 2011-06-29
Add Date: 2001-01-01
Date Edited: 2022-06-08
Lifeform: perennial herb
Blooming Period: Apr-May
610 - 1525 meters
2000 - 5005 feet
General Habitat:
  • Joshua tree "woodland"
  • Mojavean desert scrub
General Micro Habitat:
Micro Habitat:
  • Roadsides
  • Sandy
  • Washes
Possibly threatened by vehicles and road widening. On watch list in NV. See Proceedings of the American Academy of Arts and Sciences 14:291 (1879) for original description, North American Flora 24(1):22 (1919) for revised nomenclature, and Memoirs of the New York Botanical Garden 61:84-85 (1990) for taxonomic treatment.
Total Occurrences: 26
Element Occurrence Ranks:
0 0 2 3 0 21
Occurrence Status:
Historical >20 Years 18
Recent <=20 Years 8
Presumed Extant 26
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
Arizona (AZ), California (CA), Nevada (NV)
California Counties and Islands: Name (Code)
Inyo (INY), San Bernardino (SBD)
Quads: Name (Quad Code)
Adelanto (3411754), Astley Rancho (3411774), Barstow (3411781), Barstow SE (3411771), East of Kingston Peak (3511567), East of Kingston Spring (3511557), Emigrant Canyon (3611742), Helendale (3411763), Hodge (3411772), Kingston Peak (3511568), Kingston Spring (3511558), Kramer Hills (3411784), Lake Arrowhead (3411732), Lane Mountain (3511618), Minneola (3411677), Mud Hills (3511711), Nebo (3411688), Silverwood Lake (3411733), Stoddard Well (3411761), Victorville (3411753), Victorville NW (3411764), Water Valley (3511712), West Ord Mountain (3411668), White Horse Mtn. (3411658), Wild Crossing (3411773), Yermo (3411687)
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
Counties   Quads