Alternanthera pubiflora (Benth.) Kuntze

Achyranthes williamsii Standley, Contr. U. S. Nat. Herb
18: 89. 1916.
Stems herbaceous, clambering over shrubs and herbs, sparsely branched, the branches stout, striate, cinereous-puberulent ; petioles stout, 2-10 mm. long; leaf-blades oblong, ovateoblong, or rarely elliptic, 2.5-8 cm. long, 0.8-3.3 cm. wide, acute, acutish, or obtuse at the apex, acute or obtuse at the base, pubescent on both surfaces with very short, lightly appressed hairs, bright-green, rather thick; peduncles axillary, simple or rarely branched, 2-6 cm. long, stout, cinereous or glabrate; heads solitary, short-cylindric or ovoid, 1-3 cm. long, 10-12 mm. thick; bracts broadly ovate, acuminate, glabrous; bractlets half as long as the sepals, ovate, aristate-acuminate, short-pilose; sepals narrowly lance-oblong, 5 mm. long, acuminate, whitish or stramineous, 3-nerved, short-pilose, the tips slightly spreading; filaments very short, the staminodia ligulate, longer than the anthers and slightly shorter than the sepals, lacerate at the apex; style evident, the stigma entire.
Type locality: Near Cituro, Panama. Distribution : Southwestern Mexico to Panama.

Alternanthera pubiflora là loài thực vật có hoa thuộc họ Dền. Loài này được (Benth.) Kuntze mô tả khoa học đầu tiên năm 1891.