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Douglas' Tickseed
Leptosyne douglasii
About Douglas' Tickseed (Leptosyne douglasii) 0 Nurseries Carry This Plant Coreopsis douglasii is a species of flowering plant in the daisy family known by the common name Douglas' tickseed. It is native to California from Santa Clara County to San Diego County, as well as from Mohave County in Arizona. The plant grows on the slopes of the Transverse Ranges, and the Inner South California Coast Ranges adjacent to the western edge of the Central Valley-San Joaquin Valley. Coreopsis douglasii is an annual herb producing one or more stems with erect inflorescences growing up to about 25 centimeters tall. The slightly fleshy leaves are located mainly around the base of the stem. They are up to 8 centimeters long and linear in shape or divided into linear lobes. The inflorescence bears a single flower head with a rounded involucre of lance-shaped, pointed phyllaries. The head has a center of many small yellow disc florets and a fringe of 5 to 8 bright yellow ray florets each usually under a centimeter long. The fruit is an achene.
Plant Description
Plant Type
Plant Type
Annual herb, Succulent

1.9 - 9.8 in tall

Wildlife Supported

Butterflies & moths hosted ( 2 likely * ) SHOW ALL
Xanthothrix ranunculi Image
Xanthothrix ranunculiXanthothrix ranunculi

Landscaping Information
Natural Setting
Annual Precipitation: 4.5" - 37.8", Summer Precipitation: 0.19" - 1.47", Coldest Month: 39.9" - 54.1", Hottest Month: 68.9" - 80.9", Humidity: 0.96" - 32.68", Elevation: 285" - 3795"

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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