Difference between revisions of "Jeffersonia"
Trans. Amer. Philos. Soc. 3: 342, plate 1. 1793.
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Latest revision as of 21:47, 5 November 2020
Herbs, perennial, deciduous, 1-4 dm, glabrous. Rhizomes short, producing 4-8 or more leaves per year. Aerial stems absent. Leaves alternate, 2-foliolate; petiole long, slender. Leaf blade reniform-orbiculate in overall outline, 1.5-18 cm, leaflet margins entire to shallowly lobed; venation palmate. Inflorescences terminal, solitary flowers borne on scapes. Flowers 4-merous, 15-30 mm; bracteoles absent; sepals caducous, (3-)4(-5), petaloid; petals 8, white [lavender]; stamens 8; anthers dehiscing by 2 apically hinged flaps; pollen exine striate; ovaries obovoid; placentation marginal; style central. Fruits capsulelike, brownish, obovoid, with transverse or oblique dehiscence, top forming reflexed lid. Seeds 10-25, red; aril white, not enclosing seed. x = 6.
Distribution
e North America and e Asia.
Discussion
Species 2 (1 in the flora).
Selected References
None.