|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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Annual to subshrub
Leaves generally basal and cauline, alternate, generally simple; stipules 0
Inflorescence: generally raceme
Flower bisexual; sepals 4, free; petals (0)4, free, generally white or yellow, often clawed; stamens generally (2,4)6, generally 4 long, 2 short; ovary 1, superior, chambers generally 2, septum membranous, connecting 2 parietal placentas, style 1, stigma simple or 2-lobed
Fruit: generally capsule ("silique") with 2 deciduous valves, sometimes breaking transversely or indehiscent
Seeds 1many per chamber
Genera in family: 300+ genera, 3000+ species: worldwide, especially cool regions; some cultivated for food (especially Brassica, Raphanus ) and ornamental
Recent taxonomic note: Recently treated to include Capparaceae [Rodman et al. 1993 Ann Missouri Bot Gard 80:686699; Rollins 1993 Cruciferae of Continental North America. Stanford Univ Press]
Family description, key to genera by Robert A. Price.
Roy E. Buck, Dean W. Taylor, and Arthur R. KruckebergAnnual to perennial herb, glabrous to bristly, generally ± glaucous
Leaves ± entire to pinnately compound; basal generally rosetted, generally ± petioled; cauline linear to (ob)ovate, often clasping
Inflorescence generally ± open; bracts generally 0
Flower biradial or bilateral; calyx generally ± urn-shaped, sepals erect, generally not green, bases ± pouch-like, generally keeled; petals generally exserted, blade generally narrower than claw, ± channeled, margins ± wavy, generally ± scarious; stamens generally in 3 free pairs; style 0 or short, stigma generally ± entire, blunt
Fruit long, generally strongly compressed parallel to septum
Seeds generally compressed, generally ± winged
Species in genus: ± 40 species: sw US, n Mex
Etymology: (Greek: twisted flower, from wavy-margined petals)
Reference: [Dolan & LaPré 1989 Madroño 36:3340; Kruckeberg & Morrison 1983 Madroño 30:230244]
Caulanthus sometimes including here. Calluses on leaf margins of some mimic pierid butterfly eggs, reducing larval herbivory. Variable, complex; needs study.
S. fenestratus (Greene) J.T. Howell
TEHIPITE VALLEY JEWELFLOWERAnnual 14 dm, simple or few-branched belowSee the CNPS Inventory for information about endangerment and rarity.
Leaves: lower 25 cm, deeply 12-pinnately lobed, segments linear to oblanceolate, petiole long; uppermost ovate, entire to coarsely toothed
Inflorescence: bracts 12, leaf-like, green or with purple tips
Flower: calyx somewhat narrowed at tip, sepals 78 mm, purple, tips recurved; petals purple, blades 913 mm, wide, flat; filaments free, upper pair exserted, recurved, with reduced anthers
Fruit reflexed to erect, 1.55 cm, 1.51.8 mm wide, flat
Seed: wing at 1 end, sometimes minute
Ecology: Granite ledges, sand, open mixed-conifer/oak woods
Elevation: 12001750 m.
Bioregional distribution: c High Sierra Nevada (Kings River Canyon, Fresno Co.).
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Retrieve Jepson Interchange Index to Plant Names entry for Streptanthus fenestratus
Retrieve dichotomous key for Streptanthus
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