Paepalanthus chiapensis Moldenke

Paepalanthus chiapensis Moldenke, sp. nov
Stems very short ; leaves olivaceous, broadly linear, spreading, 2 -6 cm. long, 2.5 3.8 nun. wide at the middle, clasping at base, blunt, fcnestrately many-nerved, obscurely puberulenl or glabrescent; ])eduncles aggregate, 2-8, 9.5-25 cm. long, deeply many sulcate, twisted, gl i brate; sheaths loose, 2-4 cm. long, striate, glabrate, the blade bilobed and short; heads hemispheric, 4-7 mm. in diameter; involucral bractlets stramineous, elliptic, filiate, the outer ones acute, the inner ones acuminate; receptacle villose; receptacular bractlets nigrescent, linear, ciliate, acuminate; staminate florets: long-pedicellate; sepals 3, nigrescent, connate at base, but not spathaceous, spatulate, blunt, densely tufted-pilose toward apex; petal-tube stramineous, its lobes 3, small, glabrous; anthers 3, white; pistillate florets: long-pedicellate; sepals J, nigrescent, obovate, long-pilose on the back and margins; petals 3, free, hyaline, obovate, blunt, long-pilose on the back (especially at apex); ovary 3-celled; style elongate, with 3 appendages; stigmas 3.
Caule perbrevi; pedunculis unicapitatis; foliis caespitosis quam pedunculo valde brevioribus; vaginis glabratis; floribus trimeris.
Type collected in shallow water at Monserrate, Chiapas, Mexico, in May, 1925, ('. A. I'ltrpus 10565 (herb N. Y. Bot. Gard.). Distribution: Chiapas.