leon to don

[Gr. leon = a lion, and odous (gen it. odontos )= a tooth, from the tooth-like divis ions of the leaves.] Bot.: A genus of Composites, sub-order Liguli flore (Cichoracem), tribe Scorzonerere. It consists of perennial milky herbs, bearing simple branched scapes. The heads are yellow; the involucral bracts many, in several series, the outer ones le in size; the receptacle flat, naked; the fruit terete, grooved; the pappus hairs rigid, in one or two series. About twenty-five species are known.