纤细都丽菊 xian xi du li ju

Herbs, annual, to 1.3 cm tall. Stems erect, upper parts branched, striate, adpressed puberulent. Leaves subsessile, narrowly lanceolate to lanceolate, to 10.5 × 2 cm, both surfaces adpressed puberulent, base narrowly cuneate, margin obscurely, sparsely dentate, apex acute. Peduncles (0-)0.7-6.5 mm. Involucre hemispheric; phyllaries ca. 3-seriate. Florets 18-24; corolla pale lilac to mauve, tubular, 2.2-2.5 mm. Achenes subcylindric, 0.8-1.7 mm, (2-)4-6-ribbed, apical rim narrow, forming shallow cup. Pappus absent.

By ponds and rice fields. ?Yunnan [Thailand; E and NE Africa].

There has been confusion, particularly in Asia, between this species and the more widely distributed and more weedy Ethulia conyzoides, though the two are easily distinguished if ripe fruit are available. For example, the illustration in Higher Pl. China (11: 135, pl. 186. 2005) clearly depicts this species rather than E. conyzoides.