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Long-fruit Jewelflower
Streptanthus longisiliquus
About Long-fruit Jewelflower (Streptanthus longisiliquus) 0 Nurseries Carry This Plant Streptanthus longisiliquus (orth. var. S. longisiliqus) is a species of flowering plant in the mustard family known by the common name long-fruit jewelflower. It was first described to science in 2007. It is endemic to northern California, where it is known from Butte, Tehama, and Shasta Counties. It can be found in forest and woodland habitat in mountains and foothills. It is a short-lived perennial herb producing a few-branched stem up to 1. 2 to 1. 5 meters in maximum height. It is mostly hairless except for some light hairs on the inflorescences and sometimes the leaf petioles. The basal leaves have oval or spoon-shaped blades up to 10 centimeters long, usually with smooth edges. Leaves higher on the stem are oval or oblong and lack petioles, their bases often clasping the stem. Flowers occur at intervals along the upper stem. Each flower has a bell-shaped calyx of sepals which yellow-green at the base and purplish at the tip, measuring under a centimeter in length. The petals emerging from the end are brownish or purplish with greenish bases. The fruit is a flattened, curving silique that can be quite long even for the genus, measuring up to 15 centimeters in length.
Plant Description
Plant Type
Plant Type
Perennial herb

3.9 - 4.9 ft tall

Flower Color
Flower Color
Yellow, Purple, Brown

Wildlife Supported

Butterflies & moths hosted ( 4 likely * ) SHOW ALL

Landscaping Information
Natural Setting
Annual Precipitation: 47.0" - 73.3", Summer Precipitation: 1.25" - 1.97", Coldest Month: 37.8" - 47.5", Hottest Month: 62.5" - 70.4", Humidity: 2.89" - 21.21", Elevation: 2235" - 4911"

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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