CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record calochortus_excavatus - Sun, Nov. 28, 2021 13:11 ET c
Calochortus excavatus
common nameInyo County star-tulip
CalPhotos image
more photos
Gerald and Buff Corsi © 1999 California Academy of Sciences  Follow image link for photo data.
life form bulbiferous 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
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 (24):
Union Wash (351A) 3611861, Manzanar (351B) 3611862, Mount Langley (351C) 3611852, Lone Pine (351D) 3611851, Blackrock (372B) 3611882, Independence (372C) 3611872, Kearsarge Peak (373D) 3611873, Tinemaha Reservoir (392C) 3711812, Big Pine (393A) 3711823, Coyote Flat (393B) 3711824, Split Mountain (393C) 3711814, Fish Springs (393D) 3711813, Deep Springs Lake (412D) 3711831, Laws (413A) 3711843, Fish Slough (413B) 3711844, Bishop (413C) 3711834, Poleta Canyon (413D) 3711833, Rovana (414A) 3711845, Chidago Canyon (432C) 3711854, Chalfant Valley (432D) 3711853, Convict Lake (434D) 3711857, River Spring (451A) 3711885, Benton Hot Springs (451D) 3711875, Big Alkali (470B) 3811922
quad data info

Counties, states, regions:
Inyo (INY), Mono (MNO)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Chenopod scrub (ChScr)
•Meadows and seeps (Medws)/alkaline, mesic
blooming period Apr-Jul  
elevation range1150 - 2000 meters
Most occurrences are small remnants of former populations. Threatened by groundwater pumping, development, non-native plants, road maintenance, and grazing. See Pittonia 2:71 (1890) for original description, and Proceedings of the California Academy of Sciences III 2:146 (1901) for taxonomic treatment.
full nameCalochortus excavatus Greene
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  CAEX2 Element Code  PMLIL0D0F0
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 Sun, Nov. 28, 2021 from

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