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FOC | Family List | FOC Vol. 19 | Berberidaceae | Plagiorhegma

1. Plagiorhegma dubium Maximowicz, Mém. Acad. Imp. Sci. St.-Pétersbourg Divers Savans. 9 [Prim. Fl. Amur.]: 34. 1859.

鲜黄连 xian huang lian

Jeffersonia dubia (Maximowicz) Bentham & J. D. Hooker ex Baker & S. Moore; J. manchuriensis Hance.

Plants 10-30 cm tall, glabrous. Rhizome with cross section bright yellow, producing 4-6 foliage leaves or flowering shoots per year; aerial stems absent. Leaf petiole 10-30 cm, glabrous; leaf blade abaxially grayish green, suborbicular, 6-8 × 9-10 cm, membranous, base deeply cordate, margin entire or repand, apex obtusely emarginate, apiculate. Scapes 15-20 cm. Sepals caducous, purplish red, oblong-lanceolate, ca. 6 mm, striate, glabrous. Petals 6, obovate, ca. 1 × 0.6 cm, base attenuate. Stamens ca. 6 mm; filaments flat, ca. 2 mm; anthers ca. 4 mm. Pistil ca. 4 mm, glabrous; ovules numerous; style ca. 2 mm; stigma rugosely undulate on margin. Capsules yellowish brown, fusiform, ca. 1.5 cm, obliquely dehiscing from top toward base; style ca. 3 mm. Fl. May-Jun, fr. Sep-Oct.

Needle-leaved forests, mixed forests, thickets, shaded and wet places on slopes; 500-1100 m. Jilin, Liaoning [Korea, Russia (along Amur River)].


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