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Santa Susana Tarplant
Deinandra minthornii
  
0 Nurseries Carry This Plant

About Santa Susana Tarplant (Deinandra minthornii) 0 Nurseries Carry This Plant Deinandra minthornii (syn. Hemizonia minthornii), and known by the common names Santa Susana Tarplant or Santa Susana Tarweed, is a rare California native species of flowering plant in the Aster family.
It is endemic to western Los Angeles County and eastern Ventura County, in the Santa Susana Mountains, Simi Hills, and Santa Monica Mountains. They are part of the western Transverse Ranges region in Southern California.

This plant grows in the Coastal sage scrub and Chaparral habitats of the California Coastal Sage and Chaparral ecoregion, and the Chaparral habitat of the inland adjacent California Montane Chaparral and Woodlands ecoregion. It can be found on rocky outcroppings and in sandstone crevices, from 980 to 1,640 feet (300-500 m) in elevation.

Santa Susana Tarplant is a shrub or subshrub growing 5.9 inches to 3.3 feet (15 cm-1 m) in height. The stems are hairy, glandular, and leafy. The thick leaves are linear, smooth-edged or with a few teeth, and are glandular and hairy to bristly. The phyllaries lining the flower heads are coated in glands. The head contains four to eight yellow ray florets and several yellow disc florets.

Deinandra minthornii is an endangered species, listed as a Threatened Species by the California State Department of Fish and Game, as an Imperiled Species under the California Endangered Species Act-CESA, and is on the California Native Plant Society Inventory of Rare and Endangered Plants of California. There are about 20 occurrences/populations of the plant, but several have not been observed recently.
Plant Description
Plant Type
Plant Type
Shrub

Size
Size
0.49 - 3.3 ft tall

Flower Color
Flower Color
Yellow

Landscaping Information
Sun
Sun
Full Sun

Common uses
Common uses
Bee Gardens

Natural Setting
Climate
Climate
Annual Precipitation: 17.2" - 21.8", Summer Precipitation: 0.19" - 0.29", Coldest Month: 51.0" - 54.2", Hottest Month: 74.4" - 78.3", Humidity: 3.01" - 23.98", Elevation: 923" - 2300"

Alternative Names
Botanical Names: Hemizonia minthornii
Common Names: Santa Susana Tarweed


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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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