Herbs perennial, glabrous. Tap root cylindric. Stem conspicuous, erect, or obsolete, base clothed in fibrous remnant sheaths. Basal leaves petiolate, sheaths dilated, white and membranous at margins; blade 2–3-pinnate; ultimate segments linear-lanceolate or linear. Umbels compound, terminal and lateral; rays stout, subequal or unequal; bracts and bracteoles 2–3-pinnate; umbellules many-flowered. Calyx teeth minute or obsolete. Petals white, obovate, base cuneate, apex with small incurved lobule. Stylopodium conic; styles erect, divergent or reflexed. Fruit oblong-ovoid or ovoid, slightly compressed laterally; ribs narrow, slightly winged; vittae 3–4 in each furrow, 4–8 on commissure. Seed face plane. Carpophore 2-parted.
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