Alternanthera crucis (Moq.) Boldingh

Achyranthes portoricensis (Kuntze) Standley, Jour. Wash. Acad
Sci. 5: 73. 1915.
?
? Brandesia serpyllifolia Mart. Denks. Akad. Munch. 5: 106, in part. 1817. Not Achyranthes serpyllifolia Poir. 1810. Telanthera serpyllifolia Moq. in DC. Prodr. 13 2 : 373. 1849. Alternanthera portoricensis Kuntze, Rev. Gen, 540. 1891. Telanthera Sintenisii Urban, Symb. Ant. 1: 301. Ap 1899. Telanthera dolichocephala Urban, Symb. Ant. 1: 302. 1899.
Alternanthera culebrasensis Uline, Field Columb. Mus. Publ. Bot. 1: 420. Au 1899. Alternanthera Sintenisii Uline, Field Columb. Mus. Publ. Bot. 1: 421. 1899. Alternanthera dolichocephala Urban, Symb. Ant. 4: 221. 1905.
Prostrate perennial; stems much branched, 2-10 dm. long, very slender, densely villous when young with hispidulous white hairs, usually glabrate in age; petioles slender, 3-10 mm. long; leaf -blades orbicular, rounded-ovate, or broadly oval, 1-4 cm. long, thin, densely pilose with hispidulous or branched hairs when young, usually glabrate in age, rounded at the apex, mucronulate, often apiculate, rounded at the base and short-decurrent; heads axillary, Sessile, solitary, the flowers white; bracts and bractlets ovate-oblong, long-acuminate, half as long as the sepals, subhyaline, sparsely or densely short-pilose; sepals lance-oblong, 3-4 mm. long, long-acuminate, 3-nerved, densely pilose, the inner ones narrower; filaments linear, the tube short; staminodia equaling or slightly exceeding the filaments ligulate, laciniate at the apex; style elongate.
Type locality: Guayama, Porto Rico.
Distribution: On rocky hillsides or in moist thickets, Porto Rico and the Danish West Indies.

Alternanthera crucis est une plante herbacée de la famille des Chenopodiaceae, ou des Amaranthaceae, selon la classification envisagée.

Alternanthera crucis là loài thực vật có hoa thuộc họ Dền. Loài này được (Moq.) Bold. mô tả khoa học đầu tiên năm 1909.