Herbs 15-200 cm tall; rhizomes horizontally creeping, white to brownish red inside, 4-20 cm long, to 10 mm in diam., roots fibrous; stolons 5-55 cm long, rooting at the nodes, each node with a membranous, brownish, ovate bract, basally sheathing, apex acuminate, 8-10(-22) mm long. Leaves scattered to mainly radical, somewhat succulent, 20-65 x (1-)1.5-6(-6.5) cm, mostly exceeding the inflorescence, glabrous. Inflorescence a thyrse, 2-44 cm long and 2-15 cm wide, the cincinni 5-25-flowered, simple, sometimes once branched, sometimes young plants sprouting from the axil of the cataphylls and/or primary bracts; number of cataphylls 2-6, 0.5-14 x 0.2-1.2 cm; primary bracts narrowly triangular, 0.1-3 cm long; floral bracts narrowly triangular, 0.1-0.2 cm long; pedicels 2-10 mm long; cataphylls, rachis, bracts, pedicels, and ovary sparsely to densely villose, hairs white (0.3-2 mm long), tepals and fruit almost glabrous. Flower buds pale yellow to orange, flowers white to yellowish white, sometimes with yellow honey-guide on the 3 adaxial tepals; tepals narrowly ovate-elliptic to ovate-elliptic, 4-13 x 1-6 mm, the 3 adaxial ones basally connate; stamens with white to pale green filaments and bright yellow to orange anthers, abaxial stamen 4-11 mm long, the 2 adaxial ones 3-6 mm long, dehiscence starting apically; ovary green, subglobose, style white to pale green, 3-5 mm long. Capsule green when young, maturing shiny orange, red, and finally black, (sub)globose, 5-10 mm in diam.; seeds black, subglobose, tuberculate, 0.5-1 mm in diam.
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Plants somewhat Iris-like, 3-8 dm. tall; leaves 20-50 cm. long, 1.5-4.5 cm. broad, minutely dentate-lacerate toward the tip; panicles 7-30 cm. long, 3-12 cm. broad, bearing numeroussmall white flowers; peduncle usually scurfy-puberulent; pedicels 0.3-0.4 cm. long; perianth segments 0.4-0.6 cm. long; berries dull red, globose, about 0.5 cm. in diameter.