Streptanthus barbatus |
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Pacific jewelflower |
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Habit | 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). |
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. |
Fruiting pedicels | erect to ascending, (straight), 3–8 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. |
Streptanthus barbatus |
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Phenology | Flowering Jun–Aug. |
Habitat | Dry, open Jeffrey pine woods, gravelly serpentine grounds in forest openings |
Elevation | 800-2200 m (2600-7200 ft) |
Distribution |
CA
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Discussion | Streptanthus barbatus is known from Siskiyou, Tehama, and Trinity counties. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 7, p. 704. |
Parent taxa | Brassicaceae > tribe Thelypodieae > Streptanthus |
Sibling taxa | |
Synonyms | Cartiera barbata |
Name authority | S. Watson: Proc. Amer. Acad. Arts 25: 125. (1890) |
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