Boechera perstellata |
Brassicaceae tribe Boechereae |
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Habit | Perennials; usually short-lived; sexual; caudex not woody. | Perennials or, rarely, biennials; eglandular. |
Stems | usually 2–5 per plant, arising from margin of rosette near ground surface, (1–)2–8 dm, densely pubescent proximally, trichomes short-stalked, 3- or 4-rayed, 0.1–0.5 mm, similarly pubescent distally. |
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Basal leaves | blade obovate to oblanceolate, (5–)10–45 mm wide, margins usually coarsely dentate, rarely sinuate, ciliate on petiole base, surfaces moderately pubescent, trichomes short-stalked, 3- or 4(–6)-rayed, 0.1–0.5 mm. |
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Cauline leaves | 6–25, concealing stem proximally; blade auricles 1–6 mm, surfaces of distalmost leaves pubescent. |
(sometimes absent); petiolate, subsessile, or sessile; blade base auriculate or not, margins usually entire or dentate, rarely pinnatifid. |
Trichomes | often short-stalked, sessile, or subsessile, usually forked or dendritic, rarely malpighiaceous, sometimes simple or absent. |
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Racemes | 10–40-flowered, usually unbranched. |
ebracteate, often elongated in fruit. |
Flowers | ascending at anthesis; sepals pubescent; petals purplish, 3–4 × 0.7–1 mm, glabrous; pollen ellipsoid. |
actinomorphic; sepals erect, ascending, or spreading, lateral pair usually not saccate basally; petals white, yellowish, pink, lavender, or purple, claw present, often indistinct; filaments unappendaged, not winged; pollen 3-colpate. |
Fruiting pedicels | usually horizontal, usually straight, rarely slightly curved, 5–15 mm, pubescent, trichomes spreading, simple. |
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Fruits | usually horizontal, not appressed to rachis, not secund, straight, edges parallel, (1.5–)2–3.3 cm × 0.8–1 mm; valves sparsely pubescent throughout; ovules 12–20 per ovary; style 0.4–0.8 mm. |
usually siliques, rarely silicles, dehiscent, unsegmented, usually latiseptate, rarely terete or slightly angustiseptate; ovules [2–]4–250 per ovary; style usually distinct, rarely obsolete; stigma usually entire, rarely 2-lobed. |
Seeds | uniseriate, 0.8–1.1 × 0.6–0.8 mm, not winged. |
biseriate, sub-biseriate, uniseriate, or, rarely, aseriate; cotyledons accumbent or incumbent. |
2n | = 14. |
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Boechera perstellata |
Brassicaceae tribe Boechereae |
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Phenology | Flowering Apr–May. | |
Habitat | Calcareous bluffs and wooded hillsides | |
Elevation | 200-400 m (700-1300 ft) | |
Distribution |
KY; TN |
North America; Asia (Russian Far East) |
Discussion | Of conservation concern. Boechera perstellata is in the Center for Plant Conservation’s National Collection of Endangered Plants. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Genera 7, species 119 (7 genera, 117 species in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 7, p. 396. | FNA vol. 7, p. 347. |
Parent taxa | ||
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | Arabis perstellata, Arabis perstellata var. ampla | |
Name authority | (E. L. Braun) Al-Shehbaz: Novon 13: 388. (2003) | Al-Shehbaz: Pl. Syst Evol. 259: 111. (2006) |
Web links |