Difference between revisions of "Transberingia"
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|name=Beringia | |name=Beringia | ||
|authority=R. A. Price, Al-Shehbaz & O’Kane | |authority=R. A. Price, Al-Shehbaz & O’Kane | ||
| + | |rank=genus | ||
|publication_title=Novon,Novon | |publication_title=Novon,Novon | ||
|publication_place=11: 333. 2001,,13: 396. 2003 | |publication_place=11: 333. 2001,,13: 396. 2003 | ||
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|tribe=Brassicaceae tribe Camelineae | |tribe=Brassicaceae tribe Camelineae | ||
|genus=Transberingia | |genus=Transberingia | ||
Latest revision as of 22:35, 5 November 2020
Perennials; not scapose; glabrous or pubescent, trichomes simple, forked, stalked, or dendritic. Stems erect or ascending, unbranched or branched basally and distally. Leaves basal and cauline; petiolate or sessile; basal rosulate, petiolate, blade margins often entire, sometimes dentate, rarely sinuate; cauline blade (base not auriculate, sagittate), margins usually entire, rarely dentate. Racemes (corymbose, several-flowered), elongated in fruit. Fruiting pedicels ascending to subdivaricate, slender (terete). Flowers: sepals erect, oblong, (pubescent); petals white, oblanceolate, (longer than sepals), claw obscurely differentiated from blade, (apex obtuse); stamens slightly tetradynamous; filaments not dilated basally; anthers oblong, (apiculate); nectar glands confluent, subtending bases of stamens. Fruits siliques, dehiscent, sessile or subsessile, linear, smooth, terete; valves each with prominent midvein and marginal veins, secondary veins anastomosing and distinct or obscure, glabrous; replum rounded; septum complete; ovules 70–150 per ovary; (style obsolete or distinct); stigma capitate. Seeds biseriate, plump, not winged, narrowly oblong; seed coat (minutely reticulate), not mucilaginous when wetted; cotyledons incumbent. x = 8.
Distribution
n, w North America, e Asia (Russian Far East).
Discussion
Species 1.
For discussion of the generic limits of Transberingia, see the original description and also under 60. Halimolobos.
Selected References
None.