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Calochortus excavatus
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Inyo County Star-tulip
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Calochortus excavatus

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About Inyo County Star-tulip (Calochortus excavatus) Calochortus excavatus is a species of flowering plant in the lily family known by the common name Inyo County star-tulip. The flowering plant is endemic to eastern California, where it is known from several reduced and threatened populations in Mono and Inyo Counties. It occupies grassy habitats in alkaline Shadscale scrub plant communities, alongside Atriplex and other playa halophyte flora, primarily in Owens Valley. The species is listed as endangered, threatened by the loss of local groundwater. Calochortus excavatus is a perennial bulb, growing a slender unbranched stem to about 30 centimetres (12 in) in maximum height. The inflorescence bears 1 to 6 erect bell-shaped flowers in a close cluster. Each flower has three sepals which lack spotting, and three white petals. The petals may have green striping on their outer surfaces and generally have a red-purple blotch at the base. The anthers are reddish to purple.
Plant Description
Plant Type
Perennial herb

Max. Height
11.8 in (30 cm)

Flower Color
Yellow, White, Green, Purple, Red

Native Status
Natural Setting
Elevation ?
3786' - 9056'

Annual Precip. ?
4.9" - 27.3"

Summer Precip. ?
0.37" - 3.17"

Coldest Month ?
29.4° F - 46.2° F

Hottest Month ?
56.1° F - 76.5° F

Humidity ?
1.52 vpd - 30.59 vpd

Landscaping Information
Nursery Availability
Never or Almost Never Available

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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