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Chylismia heterochroma
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Shockley's Evening-primrose
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Chylismia heterochroma

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About Shockley's Evening-primrose (Chylismia heterochroma) Chylismia heterochroma is a species of evening primrose known by the common name Shockley's evening primrose. It is native to the desert slopes and woodland of eastern California and Nevada. It is a hairy, glandular annual herb growing a spindly stem up to a meter tall. There is a thick basal rosette of leaves which are mostly oval in shape and several centimeters in length, and generally no leaves higher up the stem. The inflorescence produces several small flowers with four oval petals just a few millimeters long and lavender in color with yellow-tinted bases. The fruit is a club-shaped capsule roughly a centimeter long.
Plant Description
Plant Type
Perennial herb, Annual herb

Max. Height
0.33 - 3.3 ft (0.1 - 1 m)

Flower Color
Yellow, Lavender

Native Status

Natural Setting
Elevation ?
4124' - 6534'

Annual Precip. ?
5.2" - 11.6"

Summer Precip. ?
0.53" - 1.21"

Coldest Month ?
32.8° F - 48.8° F

Hottest Month ?
62.7° F - 73.1° F

Humidity ?
2.44 vpd - 26.72 vpd

Landscaping Information
Nursery Availability
Never or Almost Never Available

Other Names
Common Names
Shockley's Evening Primrose

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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