The Morton Arboretum
The Field Museum
Chicago Botanic Garden
Additional Partners
Log In
New Account
Sitemap
Home
Search Collections
Map Search
Browse Images
Inventories
Aquatic Invasive Plant Guide
Naturalized flora of The Morton Arboretum
vPlants Checklist
Chicago Region Checklists and Inventories
Interactive Tools
vPlants Dynamic Key
Dynamic Checklist
Dynamic Key
Streptanthus barbatus
S. Watson
Family:
Brassicaceae
Pacific Jewelflower
FNA
Resources
Ihsan A. Al-Shehbaz in Flora of North America (vol. 7)
Perennials;
(caudex branched); glabrous, (sepals and leaf blade apices pubescent).
Stems
(sometimes ascending), unbranched or branched (few), 1.5-8(-9.2) dm.
Basal leaves
subrosulate (in juvenile plants); shortly petiolate; blade obovate, 1-2.7 cm (5-14 mm wide), margins dentate apically (teeth with relatively short, bristly trichomes).
Cauline leaves:
blade (fleshy), broadly ovate to orbicular, 0.7-3.5 cm × 5-24 mm (not smaller distally), base auriculate to amplexicaul, (proximally overlapping, distally not overlapping), margins usually entire, (apex obtuse).
Racemes
ebracteate, (lax in fruit).
Fruiting pedicels
erect to ascending, (straight), 3-8 mm.
Flowers:
calyx campanulate; sepals (ascending), yellowish green (in bud) or purple (in flower), (ovate), 4-7 mm, not keeled, (apex with short, bristly, flattened trichomes); petals purplish (with darker veins), 5-9 mm, blade 0.5-3 × 0.3-0.7 mm, margins slightly crisped, claw 4-7 mm, wider than blade; stamens in 3 unequal pairs; filaments (distinct): abaxial pair 4-6 mm, lateral pair 3-5 mm, adaxial pair 5-7 mm; anthers (all) fertile, 2.5-3.5 mm; gynophore 1-3 mm.
Fruits
erect to ascending, smooth, often strongly recurved distally, distinctly flattened, 2-7(-8.2) cm × 2-3 mm; valves each with obscure midvein (sometimes not basally, margins somewhat thickened); replum straight; ovules 16-30 per ovary; style 0.4-1 mm; stigma entire.
Seeds
oblong to broadly ovoid, 3-4 × 1.7-2 mm; wing (0-)0.1-0.25 mm wide at apex, (narrower at margin).
2n
= 28, 56.
Flowering Jun-Aug. Dry, open Jeffrey pine woods, gravelly serpentine grounds in forest openings; 800-2200 m; Calif.
Streptanthus barbatus
is known from Siskiyou, Tehama, and Trinity counties.
Open Interactive Map
Click to Display
47 Total Images