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Clarkia biloba
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Two Lobed Clarkia
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Clarkia biloba
  

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About Two Lobed Clarkia (Clarkia biloba) Clarkia biloba is a species of flowering plant in the evening primrose family known by the common name twolobe clarkia. It is endemic to California, where it is known from the Sierra Nevada foothills; one subspecies can also be found in the San Francisco Bay Area. It grows in chaparral and woodland habitat. It is an annual herb producing an erect stem approaching a meter in maximum height. The leaves are linear to lance-shaped and up to 6 centimeters long. Each is borne on a short petiole. The top of the erect stem is occupied by the flower cluster, which bears hanging buds above open flowers. The pink or red-purple sepals remain fused as the petals spread and emerge from one side of the bud. The petals are up to 2.5 centimeters long and pink to lavender to magenta, sometimes flecked with red. Each petal has a two-lobed tip. There are 8 stamens, some with large lavender anthers and some with smaller, paler anthers. The stigma protrudes past the stamens. There are three subspecies of this wildflower. The rarest, the Mariposa clarkia (ssp. australis), is known only from the Merced River drainage, in the Sierra foothills, where it is threatened by road maintenance and non-native plants.
Plant Description
Plant Type
Annual herb

Max. Height
3.3 ft (1 m)

Flower Color
Pink, Purple, Red

Native Status
Native

Natural Setting
Site Type
Dry places

Sun
Sun, Part Shade

Elevation ?
50' - 7883'

Annual Precip. ?
12.3" - 66.0"

Summer Precip. ?
0.20" - 1.40"

Coldest Month ?
29.7° F - 52.0° F

Hottest Month ?
55.4° F - 79.3° F

Humidity ?
0.93 vpd - 24.90 vpd

Landscaping Information
Common uses
Butterfly Gardens, Bee Gardens

Nursery Availability
Never or Almost Never Available

Other Names
Common Names
Twolobe Clarkia, Brandegee's Clarkia


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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