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Calochortus obispoensis
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San Luis Mariposa Lily
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Calochortus obispoensis

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About San Luis Mariposa Lily (Calochortus obispoensis) Calochortus obispoensis is a species of flowering plant in the lily family known by the common name San Luis mariposa lily. It is endemic to San Luis Obispo County, California, where it grows in the chaparral of the coastal mountains, generally on serpentine soils. It is a perennial herb producing a slender, branched stem up to 60 centimeters tall. The basal leaf is 20 to 30 centimeters in length and withers at flowering. There may be smaller leaves located along the stem. The flower cluster bears 2 to 6 erect flowers. Each spreading flower has three reflexed sepals up to 3 centimeters long and three flat petals each up to 2 centimeters long. The petals are yellow or orange in color with darker tips and fringed and coated in long, dark purple or red hairs. The fruit is an angled capsule up to 4 centimeters long which contains translucent yellow seeds.
Plant Description
Plant Type
Perennial herb

Max. Height
2 ft (0.6 m)

Flower Color
Yellow, Red, Orange

Native Status
Natural Setting
Site Type
Dry places


Elevation ?
113' - 3236'

Annual Precip. ?
15.4" - 44.4"

Summer Precip. ?
0.18" - 0.55"

Coldest Month ?
44.2° F - 49.4° F

Hottest Month ?
67.8° F - 74.8° F

Humidity ?
0.47 vpd - 23.31 vpd

Landscaping Information
Nursery Availability
Rarely 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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