CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record juglans_hindsii - Thu, Dec. 2, 2021, 03:49 ET b
Juglans hindsii
common nameNorthern California black walnut
CalPhotos image
more photos
Brother Alfred Brousseau © Saint Mary's College of California  Follow image link for photo data.
life form deciduous tree
CA Rare Plant Rank
List 1B.1
LIST 1B: Rare, threatened, or endangered in California and elsewhere.
     0.1: Seriously endangered in California
state rank
S1      ranking system key
global rank
G1     G1: Less than 6 occurrences OR less than 1,000 individuals OR less than 2,000 acres.
Where did the "RED" code go?
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (9):
Las Trampas Ridge (465D) 3712271, Isleton (480A)* 3812125, Rio Vista (480B)* 3812126, Florin (496B) 3812144, Clarksburg (497A) 3812145, Courtland (497D) 3812135, Capell Valley (499B) 3812242, Napa (500D)* 3812233, Jericho Valley (532C)? 3812274
quad data info

Counties, states, regions:
Contra Costa (CCA), Lake (LAK)?, Napa (NAP), Sacramento (SAC)*, Solano (SOL)*, Yolo (YOL)*
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Riparian forest (RpFrs)
•Riparian woodland (RpWld)
blooming period Apr-May  
elevation range0 - 440 meters
Only one confirmed, native occurrence appears viable as of 2003. Sizes and sites of trees in occurrences on quad 532C indicate they are historical; however further study is needed to determine native status. Reported as possibly present in BUT Co. (575C), but native status questionable. Widely naturalized in cismontane CA. Threatened by hybridization with orchard trees, urbanization, and conversion to agriculture. Formerly cultivated as rootstock for J. regia, with which it hybridizes readily. A synonym of J. californica var. hindsii in TJM (1993). See Flora of California 1(2):365 (1909) by W.L. Jepson for original description, and Madroņo 17(1):1-32 (1963) for discussion of origin.
full nameJuglans hindsii (Jeps.) Jeps.
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym   Element Code  PDJUG02040
Jepson Online Jepson Interchange  Jepson Manual and other resources
Google search
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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

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