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Glabrous, annual or perennial herbs, or rarely shrubs. Lvs simple, entire or rarely serrulate. Umbels simple or compound, usually pedunculate; bracts present or 0, simple; bracteoles usually present, simple. Petals usually yellow, rarely white to purplish, with entire, acute, inflexed apex; calyx teeth 0. Fr. usually ovoid or oblong, terete, not beaked, spineless, but often papillose or tuberculate; commissure narrow; ribs 5 per mericarp, equal, slender or winged; vittae 1-5 in furrows, sometimes 0 in ripe fr.
Fr orbicular to ellipsoid, slightly flattened laterally, somewhat constricted at the commissure, ribs narrow, scarcely prominent; oil-tubes obscure or none; carpophore bifid to the base; umbels compound, terminal and lateral; rays few; umbellets small, the involucel of conspicuously foliaceous bractlets exceeding the short pedicels; sep obsolete; pet yellow or greenish-yellow; stylopodium depressed-conic; plants with simple entire lvs. 150, N. Hemisphere.
