Description

Key Characters:

Growth Form: Stout to slender, usually erect herbs, glabrous to tomentose.

Stems: Caulescent.

Roots: Taproots stout.

Leaves: Leaves compound (ternate, ternate–pinnate, or pinnate). Alternate. Leaflets broad or narrow, distinct or +/- confluent. Leaflets broad or narrow, distinct or ± confluent. Blades membranous. Margins serrate or dentate to incised or lobed. Petioles sheathing, the cauline sheaths scarcely to somewhat inflated, sometimes bladeless. Stipules absent.

Flowers: Flowers in loose compound umbels; peduncles terminal or terminal and lateral, involucre absent or of 1 to several bracts. Flowers polygamous (with unisexual and bisexual flowers on the same plant). Rays few to numerous, spreading-ascending, often webbed. Pedicels slender, spreading-ascending, often webbed, involucel of few to numerous entire bractlets or absent. Calyx teeth prominent to absent. Corolla of 5 petals; petals white or reddish, elliptic to obovate, with a narrower inflexed apex. Stamens 5, inserted on an epigynous disk. Ovary inferior, 2-celled; ovules 1 per cells, anatropous; styles 2, usually swollen at base into a stylopodium. Styles short to long, spreading or recurved, the stylopodium conical to low-conical; carpophore 2-cleft to the base.

Fruit: Fruit oblong–ovoid to orbicular; strongly flattened dorsally; glabrous to pubescent; dorsal ribs filiform; unwinged; the lateral ones usually thick–winged; broader than the dorsal ones but narrower than the body; vittae 1 to several in the intervals; 2 to several on the commissure. Seeds 1 per mericarp; embryo small; endosperm cartilaginous. seeds flattened dorsally in transection; the face slightly concave to plane.

Ploidy:

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