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English Peak Greenbrier
Smilax jamesii
  
0 Nurseries Carry This Plant

About English Peak Greenbrier (Smilax jamesii) 0 Nurseries Carry This Plant Smilax jamesii is a species of flowering plant in the greenbriar family known by the common name English Peak greenbriar. It is to northern California, where it is known from the Klamath Mountains and the southernmost peaks of the Cascade Range. It has also been reported from nearby locations in southwestern Oregon. It grows in moist areas such as lakesides and streambanks in mountain coniferous forest habitat. It was discovered to be a new species when herbarium specimens thought to be Smilax californica were reexamined. This is a rhizomatous perennial herb taking the form of a vine, climbing and branching to maximum lengths of 2 to 3 meters. The dark green leaves have blades up to 8 centimeters long by 7 wide, triangular to pointed oval in shape. There are numerous tendrils. The inflorescence is an umbel-shaped cluster of flowers blooming from the leaf axils. Male inflorescences contain up to 20 flowers, and the larger female inflorescences may have 40. The male and female flowers have similar petals but the female flower has a spherical ovary in the center. The mature fruit is a blue berry just under a centimeter wide which turns maroon in color as it dries.
Plant Description
Plant Type
Plant Type
Perennial herb

Flower Color
Flower Color
Blue

Wildlife Supported
 


 
Butterflies & moths hosted ( 1 likely * ) SHOW ALL
*
Spodoptera praefica Image
Western Yellowstriped Armyworm Spodoptera praeficaSpodoptera praefica

Landscaping Information
Natural Setting
Climate
Climate
Annual Precipitation: 21.1" - 151.1", Summer Precipitation: 0.39" - 5.63", Coldest Month: 34.6" - 46.6", Hottest Month: 52.8" - 73.3", Humidity: 1.76" - 20.86", Elevation: 686" - 7068"

Alternative Names
Common Names: English Peak Greenbriar


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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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