Streptanthus campestris |
Streptanthus bernardinus |
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southern jewel flower |
Laguna Mountain jewelflower, Laguna Mountains. jewel flower |
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Habit | Perennials; (short-lived, caudex not woody); usually glabrous, (basal leaf blade margins pubescent, sometimes sepals). | Perennials; (caudex woody, often elevated); (glaucous), glabrous, (petioles and sepal apices pubescent). |
Stems | unbranched or branched, (few, glaucous), 6–15(–18) dm. |
unbranched or branched (few), 2.5–8.6 dm. |
Basal leaves | often rosulate; petiolate; blade (fleshy), oblanceolate to obovate, 3.5–21 cm, margins dentate, (bristly ciliate throughout or only teeth and petiole ciliate). |
not rosulate; petiolate (petioles ciliate); blade oblanceolate to spatulate, 2–8 cm (7–-25 mm wide), margins remotely dentate apically. |
Cauline leaves | blade lanceolate to narrowly ovate, 3.5–11(–15) cm × 6–14 mm (smaller distally), base auriculate to amplexicaul, margins usually entire or undulate, rarely dentate. |
blade ovate to lanceolate, 2–10 cm × 5–28 mm (smaller distally), base amplexicaul, margins entire, (apex acute to acuminate). |
Racemes | ebracteate, (with densely clustered buds, later lax). |
ebracteate, (lax in bud). |
Flowers | calyx campanulate; sepals (suberect), purple, (broadly ovate or oblong), 7–10 mm, not keeled, (apically bristly or not); petals light purple (with pale yellow claw), 9–12 mm, blade 2–3.5 × 0.5–1 mm, margins not crisped, claw 6–9 mm, wider than blade; stamens tetradynamous; filaments: median pairs (distinct), 6–8 mm, lateral pair 4–6 mm; anthers (all) fertile, 3–4 mm; gynophore 0.5–1.5 mm. |
calyx campanulate; sepals (ascending), pale yellow to white, (broadly oblong to ovate) 5–9 mm, not keeled; petals white, 7–11 mm, blade 2–4 × 1–1.3 mm, margins not crisped, claw 6–9 mm, wider than blade; stamens nearly tetradynamous; filaments: median pairs (distinct), 6.5–8.5 mm, lateral pair 4.5–5.5 mm; anthers (all) fertile, 3.5–4.5 mm; gynophore 0.5–1.5 mm. |
Fruiting pedicels | divaricate-ascending, (straight), 5–18 mm. |
divaricate-ascending, (straight), 4–7.5 mm. |
Fruits | spreading to ascending, smooth, slightly curved to straight, flattened, 6–14 cm × 2–3.5 mm; valves each with obscure midvein; replum straight; ovules 50–102 per ovary; style 1–3 mm; stigma 2-lobed. |
ascending to spreading, smooth, straight or curved, flattened, 5–12.7 cm × 1.5–3 mm; valves each with obscure midvein (at least distally); replum straight; ovules 36–56 per ovary; style 0.8–2.5 mm; stigma subentire. |
Seeds | oblong, 2–3 × 1.4–2 mm; wing 0.1–0.2 mm wide at apex. |
oblong, 2–3 × 1.4–2 mm; wing 0.1–0.2 mm wide at apex. |
2n | = 28. |
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Streptanthus campestris |
Streptanthus bernardinus |
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Phenology | Flowering May–Jun. | Flowering Jun–Aug. |
Habitat | Rocky openings in chaparral, open conifer forests, openings and after fires in chaparral-oak woodlands | Dry open pine or cypress woods, chaparral |
Elevation | 900-2300 m (3000-7500 ft) | 1200-2500 m (3900-8200 ft) |
Distribution |
CA; Mexico (Baja California)
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CA; Mexico (Baja California)
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Discussion | Of conservation concern. Streptanthus campestris is distributed in California in Riverside, San Bernardino, San Diego, Santa Barbara, and Ventura counties, and in Baja California in Sierra San Pedro Mártir and Sierra Juárez. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Streptanthus bernardinus is known from San Bernardino and San Diego counties; in Baja California it is restricted to Sierra Juárez and Sierra San Pedro Mártir. The chromosome number 2n = 14, reported by R. C. Rollins (1993) and by R. E. Buck et al. (1993), must be an error for n = 14. No other species of Streptanthus or its immediate generic relatives has such a low number. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 7, p. 707. | FNA vol. 7, p. 705. |
Parent taxa | Brassicaceae > tribe Thelypodieae > Streptanthus | Brassicaceae > tribe Thelypodieae > Streptanthus |
Sibling taxa | ||
Synonyms | Agianthus bernardinus, Agianthus jacobaeus, S. campestris var. bernardinus, S. campestris var. jacobaeus | |
Name authority | S. Watson: Proc. Amer. Acad. Arts 25: 125. (1890) | (Greene) Parish: Pl. World 20: 216. (1917) |
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