CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record plagiobothrys_diffusus - Thu, Dec. 2, 2021, 16:46 ET b
Plagiobothrys diffusus
common nameSan Francisco popcornflower
CalPhotos image
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life formannual herb
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
G1Q      ranking system key
Where did the "RED" code go?
CA state listingEndangered  09/79
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (11):
San Juan Bautista (386D) 3612175, Watsonville West (387A) 3612187, Soquel (387B) 3612188, Santa Cruz (387E) 3612281, Laurel (407C) 3712118, Davenport (408C) 3712212, Felton (408D) 3712211, Franklin Point (409A) 3712223, Ano Nuevo (409D) 3712213, Oakland East (465C) 3712272, San Francisco North (466C)* 3712274
quad data info

Counties, states, regions:
Alameda (ALA), San Benito (SBT), Santa Cruz (SCR), San Francisco (SFO)*, San Mateo (SMT)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Coastal prairie (CoPrr)
•Valley and foothill grassland (VFGrs)
blooming period Mar-Jun  
elevation range60 - 360 meters
Threatened by development and non-native plants. Possibly threatened by grazing and vehicles. Identification difficult; taxonomic work needed. See P. reticulatus var. rossianorum in The Jepson Manual. See Pittonia 1:14 (1887) for original description, and Contributions from the Arnold Arboretum 3:77 (1932) for revised nomenclature.
full namePlagiobothrys diffusus (Greene) Jtn.
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  PLDI Element Code  PDBOR0V080
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

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