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Streptanthella
Family: Brassicaceae
Streptanthella image
Patrick Alexander
  • FNA
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Ihsan A. Al-Shehbaz in Flora of North America (vol. 7)
Annuals; not scapose; (often glaucous), glabrous throughout. Stems erect, usually branched distally, rarely unbranched. Leaves basal and cauline; petiolate or sessile; basal not rosulate, petiolate, blade similar to cauline; cauline petiolate or sessile, blade (base not auriculate), margins entire, dentate, sinuate, or pinnatifid. Racemes (corymbose, several-flowered, lax), considerably elongated in fruit. Fruiting pedicels usually reflexed, rarely divaricate, slender or stout. Flowers: sepals erect, oblong, (unequal), lateral pair subsaccate basally; petals white or yellow (often veins purplish), spatulate, (slightly exceeding sepals, margins crisp), claw well-differentiated from blade, (apex obtuse); stamens in 3 unequal pairs; filaments not dilated basally; anthers ovate to oblong, (apiculate); nectar glands lateral, semi-annular, subtending lateral stamens, median glands absent. Fruits sessile, linear, smooth, latiseptate; valves each with prominent midvein; replum rounded or slightly flattened; septum complete; ovules (12-) 16-28(-34); style distinct, (well-developed, adnate with valves and replum apex); stigma subentire. Seeds uniseriate, flattened, winged, oblong; seed coat not mucilaginous when wetted; cotyledons incumbent. x = 7.
Species within checklist: Flora of the Southern Colorado Plateau Network
Streptanthella longirostris
Image of Streptanthella longirostris
The National Science Foundation
Development supported by National Science Foundation Grants (DBI 9983132, BRC 0237418, DBI 0743827, DBI 0847966)
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