Cyathula achyranthoides (Kunth) Moq.

Cyathula achyranthoides (H. B. K.) Moq. in DC. Prodr
13 2 : 326. 1849.
Desmochaeta achyranthoides H. B. K. Nov. Gen. & Sp. 2: 210. 1818.
Desmochaeta densijiora H. B. K. Nov. Gen. & Sp. 2: 211. 1818.
Desmochaeta uncinata R. & S. Syst. Veg. 5: 554. 1819.
Achyranthes uncinata Willd.; R. & S. Syst. Veg. 5: 554, as synonym. 1819.
Pupalia densijiora Mart. Nov. Gen. & Sp. 2: 61. 1826.
Cyathula achyranthoides glabrescens Moq. in DC. Prodr. 13 2 : 327. 1849.
Cyathula achyranthoides densijiora Moq. in DC. Prodr. 13 2 : 327. 1849.
Achyranthes hirtijlora A. Rich, in Sagra, Hist. Cuba 11: 175. 1850.
Cyathula prostrata achyranthoides Kuntze, Rev. Gen. 542. 1891. Annual or perennial; stems simple or sparsely branched, 6-10 dm. long, ascending or decumbent, geniculate, often rooting at the nodes, the branches ascending or spreading, sulcate, strigose-puberulent or glabrate; petioles stout, 2-10 mm. long; leaf-blades oval to rhombicelliptic, 5-16 cm. long, 2-6 cm. wide, acuminate at the apex, often abruptly so, cuneate at the base, thin, bright-green, slightly paler beneath, strigose or sometimes glabrate; spikes terminal and axillary, 4-20 cm. long, 6-7 mm. thick, obtuse, the rachis shortvillous ; glomerules shortpedicellate, 3-4 mm. long, each containing 2 perfect flowers; bracts ovate-lanceolate, longattenuate, glabrous; bractlets ovate-oblong, long-acuminate or attenuate, shorter than the flowers; sepals lance-oblong, acutish, 3-nerved, villous; segments of the sterile flowers 3-6, twice as long as the perianth, at least in age, pilose below; staminodia one third as long as the filaments, irregularly inciseddentate at the apex; seed oblong-ovate, 2 mm. long, fuscousbrownish, lustrous.
Type locality: Banks of the Magdalena River near Mompos, Colombia. Distribution: Southern Mexico to Panama; Cuba, Jamaica, and Hispaniola; also from Colombia to Brazil and Chile.