CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record pediomelum_castoreum - Thu, Dec. 2, 2021, 10:35 ET b
Pediomelum castoreum
common nameBeaver Dam breadroot
CalPhotos image
more photos
© 2005 James M. Andre  Follow image link for photo data.
life formperennial herb
CA Rare Plant Rank
List 1B.2
LIST 1B: Rare, threatened, or endangered in California and elsewhere.
     0.2: Fairly endangered in California
state rank
S2      ranking system key
global rank
G3     G3: 21-80 occurrences or 3,000-10,000 individuals OR 10,000-50,000 acres
Where did the "RED" code go?
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (19):
Lake Arrowhead (132C) 3411732, West Ord Mountain (156B) 3411668, Stoddard Well (157A) 3411761, Victorville NW (158B) 3411764, Victorville (158D) 3411753, Yermo (181A) 3411687, Nebo (181B) 3411688, Daggett (181C) 3411678, Minneola (181D) 3411677, Barstow (182A) 3411781, Hodge (182C) 3411772, Barstow SE (182D) 3411771, Kramer Hills (183B) 3411784, Astley Rancho (183C) 3411774, Wild Crossing (183D) 3411773, Water Valley (207C) 3511712, Mud Hills (207D) 3511711, Kingston Peak (250B) 3511568, Silurian Lake (251C) 3511652
quad data info

Counties, states, regions:
San Bernardino (SBD), Arizona (AZ), Nevada (NV)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Joshua tree "woodland" (JTWld)
•Mojavean desert scrub (MDScr)/Sandy, washes and roadcuts
blooming period Apr-May  
elevation range610 - 1525 meters
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.
full namePediomelum castoreum (Wats.) Rydb.
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  PECA24 Element Code  PDFAB5L050
CalFlora species this taxon    CalFlora genus related taxa
Jepson Online Jepson Interchange  Jepson Manual and other resources
Google search
search Google CNPS website    search Google entire web

Suggested citation: California Native Plant Society (CNPS). 2018. Inventory of Rare and Endangered Plants (online edition, v7-18mar). California Native Plant Society. Sacramento, CA. Accessed on Thu, Dec. 2, 2021 from

pick and add to Plant Pressexplain the meaning of the fieldsFIRSTPREVIOUSNEXTLASTCNPS.ORGQuestions and CommentsHOMELOGIN (you are guest anonymous)   Web Oriented Database Home