Thysanocarpus |
Brassicaceae tribe Thelypodieae |
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fringe-pod, lacepod |
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Habit | Annuals; not scapose; (glaucous), glabrous or pubescent. | Annuals, biennials, perennials, shrubs, or subshrubs; eglandular. | ||||||||||||
Stems | erect, unbranched or branched distally. |
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Leaves | basal and cauline; petiolate or sessile; basal (often withered by anthesis or fruiting), not or, rarely, rosulate, shortly petiolate, blade margins subentire, dentate, pinnatifid, or pinnatisect [rarely entire]; cauline sessile, blade (base usually auriculate), margins entire, dentate, or pinnatifid to pinnatisect. |
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Cauline leaves | petiolate or sessile; blade base auriculate or not, margins entire, dentate, or pinnately lobed. |
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Trichomes | usually simple, rarely forked or dendritic [subdendritic], sometimes absent. |
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Racemes | (corymbose, several-flowered), considerably elongated in fruit. |
usually ebracteate, often elongated in fruit. |
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Flowers | sepals ascending, oblong to ovate, lateral pair not saccate basally; petals white to purplish, spatulate to oblong, (subequaling or longer than sepals), claw not differentiated from blade; stamens slightly tetradynamous; filaments slightly dilated basally; anthers ovate; nectary glands each side of lateral stamen or semi-annular, median glands absent. |
usually actinomorphic, rarely zygomorphic; sepals erect, ascending, spreading, or reflexed, lateral pair saccate or not basally; petals white, yellow, orange, pink, lilac, lavender, purple, green, brown, or nearly black, claw present, often distinct; filaments unappendaged, not winged; pollen 3-colpate. |
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Fruiting pedicels | often recurved, sometimes divaricate-ascending, slender. |
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Fruits | (pendulous), sessile, cymbiform, orbicular, obovate [ovate, elliptic], smooth, strongly latiseptate; valves each with prominent midvein, glabrous or pubescent; replum entire or crenate, often perforated, (winged, wing flattened, with radiating rays); septum obsolete; ovule 1 per ovary; style distinct (relatively short) or obsolete; stigma entire. |
usually siliques, rarely silicles, usually dehiscent, unsegmented, usually terete, 4-angled, or latiseptate; ovules 1–210[–numerous] per ovary; style obsolete, distinct, or absent; stigma usually entire or 2-lobed (subentire in Sibaropsis, Streptanthella). |
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Seeds | aseriate, flattened, not winged, elliptical to orbicular; seed coat not mucilaginous when wetted; cotyledons accumbent. |
usually biseriate or uniseriate, rarely aseriate; cotyledons accumbent or incumbent. |
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Thysanocarpus |
Brassicaceae tribe Thelypodieae |
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Distribution |
w North America; nw Mexico |
North America; Mexico; Central America; South America |
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Discussion | Species 5 (4 in the flora). Thysanocarpus erectus S. Watson occurs in northwestern Mexico on Cedros and Guadalupe islands and on the mainland of Baja California. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Genera 27, species ca. 215 (14 genera, 105 species 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. 739. | FNA vol. 7, p. 676. | ||||||||||||
Parent taxa | ||||||||||||||
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Name authority | Hooker: Fl. Bor.-Amer. 1: 69, plate 18, fig. A. (1830) | Prantl: in H. G. A. Engler and K. Prantl, Nat. Pflanzenfam. 55[III,2]: 155. (1891) | ||||||||||||
Web links |