Herbs, perennial, essentially glabrous (minutely scabrous along leaf veins). Rootstock small, tuberous, branched. Stem terete, branched, purplish, base without remnant sheaths. Leaves petiolate, sheaths oblong, membranous, inflated; blade ternate; leaflets rhombic-ovate or subcordate, base broad-cuneate or cuneate, margin acute-biserrate. Umbels compound, grouped into a panicle, terminal; inflorescence branches and rays flexuose in flower, stiffening in fruit; bracts and bracteoles present or absent; rays several, very unequal; umbellules few-flowered; pedicels very unequal. Calyx teeth minute triangular. Petals white, obovate, apex incurved. Stylopodium long-conic, divided and tapering into the short, erect styles. Fruit elongate, oblong, slightly dorsally compressed, apex abruptly tapered, base rounded, glabrous; ribs 5, prominent, pale; vittae 1–3 in each furrow, 4 on commissure. Seed face plane. Carpophore 2-cleft to base.
"Fr linear-oblong, slightly flattened laterally, tipped by the slender stylopodia, the ribs low and obtuse; oil-tubes 1–4 in the intervals, 2 on the commissure; carpophore bifid to the base; umbels compound, the rays ± unequal; invol none or of a single small bract; umbellets few-fld, the 0–3 bractlets minute, the pedicels very unequal; sep minute or obsolete; pet white; branching, glabrous herbs with trifoliolate lvs and numerous loose, irregular umbels arising terminally and from the upper axils. 4, the others Old World."
Petals small, white or greenish white, sometimes suffused with lilac, glabrous, incised above an incurved apical lobule
Fruit ovate to lanceolate-ovate, laterally compressed, the mericarps slightly narrowed to the commissure, glabrous, or pilose when young and soon glabrescent; primary ribs low, not at all prominent; valleculae 1– or (in Africa constantly) 2–3-vittate, the commissure 2–4-vittate; stylopodia elongate-conical, tapering into the recurved or divergent styles; carpophore bifid
Endosperm pentagonal-subreniform in section.
Leaves variously pinnate with broad leaflets
Umbels compound, pedunculate, numerous; involucre and involucel present or absent, if present then of very few linear bracts and bracteoles
Flowers hermaphrodite or polygamous
Calyx-teeth obsolete or more rarely well defined