CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record ivesia_paniculata - Wed, Dec. 1, 2021, 06:33 ET b
Ivesia paniculata
common nameAsh Creek ivesia
CalPhotos image
more photos
Rick York © 1982 CNPS  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
G2     G2: 6-20 occurrences OR 1,000-3,000 individuals OR 2,000-10,000 acres
Where did the "RED" code go?
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (7):
Whitinger Mountain (658B) 4012086, Said Valley (659A) 4012087, Likely (675A) 4112025, Ash Valley (675C) 4112016, Ambrose Valley (676A) 4112027, Letterbox Hill (676C) 4112018, Lane Reservoir (676D) 4112017
quad data info

Counties, states, regions:
Lassen (LAS), Modoc (MOD)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Great Basin scrub (GBScr)
•Pinyon and juniper woodland (PJWld)
•Upper montane coniferous forest (UCFrs)/volcanic, rocky or gravelly
blooming period May-Aug  
elevation range1500 - 1950 meters
Known only from the Ash Valley region. Threatened by road maintenance, logging, trampling, and grazing. Protected in part at Ash Valley RNA (BLM). Previously included as I. corymbosa, a name that was never validly published. See Brittonia 33(2):165-167 (1981) for original description, and Fremontia 16(1):15-17 (1988) for brief species account and BLM management plans.
full nameIvesia paniculata T.W. Nelson & J.P. Nelson
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  IVPA Element Code  PDROS0X0S0
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 Wed, Dec. 1, 2021 from

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