Umbellilerre. on. brous annual or perennial herbs, widely distributed in temperate and subtropical regions. Lvs. pinnate, or ternate and pinnately decompound : fls. white or yel lowish, small, in compound umbels, the calyx-teeth small: fruit ovate or oblong, sometimes compressed, more or less ribbed, glabrous, or sometimes hispid. Roots often tuberous. Fifty or more species. Cami, Linn. Canawav (which see). Stem slender but erect, furrowed, 1-2 ft.: lvs. pinnately decompound, with thread-like divisions. Old World.—Sometimes runs wild.