Paepalanthus mellii Moldenke

Paepalanthus mellii Moldenke, sp. nov
Stems elongate, slender, simple, 7-8 cm. long, equally foliose throughout; leaves alti I rather dark-green, broadly linear, 1.5-2.5 em. long, about 3 mm. wide at the middle, spreading, clasping at base, abruptly acute, many-nerved, sparsely long-pilose and minutely puberulenl on both surfaces, glabrescent in age; peduncles densely aggregate at apex of the stem, aboul 17, 2-7.5 cm. long, 3-costate, twisted, pilose with short appressed whitish hairs; sheaths rather loose, 1-2 em. long, slightly twisted, spreading-pilose, the blade erect and acute; heads small, white, obconic, 2-4 mm. in diameter; involucral bractlets pale-stramineous, elliptic, acute or acuminate, glabrous; receptacle villose; receptacular bractlets whitish, elliptic, aeumii; glabrous; staminate florets: sepals 3, connate toward base, stramineous at apex, hyaline below, ^elliptic, concave-conduplieate, acuminate, glabrous; petal-tube hyaline, its lobes 3, hyaline; ^t^nens 3; anthers white; pistillate florets: sepals 3, almost free, pale-stramineous above, hyaline*below, elliptic, conduplicate-concave, acuminate, glabrous; corolla-lobes tiny, hyaline, glabrous.
Caule erecto folioso; foliis planis linearibus; capitulis albis solitariis obconicis; bracteis involucri pallide stramineis; floribus trimeris.
Type collected at Minatitlan, Veracruz. Mexico, November 28, 1928, C. D. Mell (herb. X. V. Bot. Gard i.
Distribution: Known only from the type collection.