Streptanthus barbatus |
Streptanthus insignis |
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Pacific jewelflower |
plumed jewelflower, San Benito jewelflower |
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Habit | Perennials; (caudex branched); glabrous, (sepals and leaf blade apices pubescent). | Annuals; hirsute-hispid throughout. | ||||
Stems | (sometimes ascending), unbranched or branched (few), 1.5–8(–9.2) dm. |
unbranched or branched distally, 1.2–6 dm. |
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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). |
not rosulate; shortly petiolate; blade lanceolate to oblanceolate, 2–8 cm, margins coarsely dentate to pinnatifid. |
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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). |
blade lanceolate, 1.3–9 cm × 2–20 mm, (smaller distally), base auriculate, margins dentate. |
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Racemes | ebracteate, (lax in fruit). |
ebracteate, (lax, with a terminal cluster of dark purple or greenish yellow sterile flowers). |
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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. |
calyx campanulate; sepals (of fertile flowers) dark purple, purplish, or greenish yellow, (oblong to lanceolate), 4–6 mm, (8–14 mm in sterile flowers), not or slightly keeled, (hirsute-hispid in fertile flowers, glabrous in sterile flowers); petals: (abaxial pair spreading and reflexed, adaxial pair parallel and erect), purplish white, lemon-yellow, or yellowish white (with darker midvein), 7–12 mm, blade 2–4 × 1–2 mm, margins crisped, claw 5–8 mm, about as wide as blade; stamens in 3 unequal pairs; filaments: abaxial pair (distinct), 4–6 mm, lateral pair 3–4 mm, adaxial pair (connate their entire length), 6–9 mm; anthers: abaxial and lateral pairs fertile, 1.3–2 mm, adaxial pairs sterile, 0.2–0.7 mm; gynophore 0.4–1 mm. |
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Fruiting pedicels | erect to ascending, (straight), 3–8 mm. |
divaricate to ascending, (straight, curved upward, or recurved), 3–8 mm. |
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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. |
ascending or reflexed, smooth, straight or slightly curved, flattened, 3.5–11.4 cm × 1.5–2 mm; valves each with prominent midvein, (glabrate or sparsely to densely hispid, trichomes to 1.7 mm); replum straight; ovules 32–94 per ovary; style 1–2 mm; stigma entire. |
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Seeds | oblong to broadly ovoid, 3–4 × 1.7–2 mm; wing (0–)0.1–0.25 mm wide at apex, (narrower at margin). |
broadly oblong, 1.4–2 × 1–1.3 mm; wing 0.15–0.3 mm wide, continuous. |
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2n | = 28, 56. |
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Streptanthus barbatus |
Streptanthus insignis |
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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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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.) |
Subspecies 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 7, p. 704. | FNA vol. 7, p. 717. | ||||
Parent taxa | Brassicaceae > tribe Thelypodieae > Streptanthus | Brassicaceae > tribe Thelypodieae > Streptanthus | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Cartiera barbata | |||||
Name authority | S. Watson: Proc. Amer. Acad. Arts 25: 125. (1890) | Jepson: Man. Fl. Pl. Calif., 420. (1925) | ||||
Web links |