Ixeris Cass.
苦藚菜屬
Low, usually glaucous annuals, biennials, or perennials; leaves radical and cauline, alternate, radical ones long petiolate. Heads small, few to many, on erect corymbosely branched stems; peduncle slender, ebracteate. Involucre tubular, bracts minute, in few series, glabrous, herbaceous, inner bracts all equal, linear, green, much larger and longer than outer calyculate bracts. Receptacle flat, naked. Corollas ligulate, truncate, yellow, white or purplish; ligule 5-toothed. Achenes glabrous, somewhat flattened, narrowly oblong, usually 10-ribbed, long beaked. Pappus bristles many, slender, scaberulous, nearly equal, silvery.
About 20 species in eastern and southeastern Asia. Taiwan, six species, one of which is represented by two subspecies.
- Pak, J. H. & S. Kawano. 1992. Biosystematic studies on the genus Ixeris and its allied genera (Compositae-Lactuceae). IV. Taxonomic treatments and nomenclature. Mem. Fac. Sci. Kyoto Univ., Ser. Biol. 15: 29-61.
- Yahara, Y. 1995. Ixeris Cass. In K. Iwatsuki, T. Yamazaki, D. E. Boufford & H. Ohba (eds.). Fl. Jap. 3(b): 15-19.
