36 Field Columbian Museum Botany, Vol. 2. 



of Charlotte Amalia, St. Thomas (416), spines plentiful and well de- 

 veloped. An old garden spot at Pedernales Point, Isle of Pines 

 (1425), spines few and poorly developed. Waste grounds about San 

 Miguel, Cozumel (1468), spines plentiful; and outskirts of Progreso^ 

 Yucatan (1736), spines short and very sharp. 



Amaranthus tristis Linn. ex. Griseb. Fl. Br. W. I. 69. 



Willd. Hist. Amar. t. 5, f. 10. A. tristis Linn.? 



Waste grounds suburbs of San Domingo city (860), leaves small 

 3-4.5 x 1.5-2 cm. Roadsides near Port Antonio, Jamaica (1794), 

 juvenile. Fallow and cultivated fields at " The Creek," Cayman Brae 

 (1191), where it is known as " Callalu;" leaves large 6.5-8x4-4-5 

 cm., petioles as long as the lamina; another specimen from coco 

 groves (1155) with more diffuse inflorescence and smaller (2.5-4 cm.) 

 leaves on short petioles also occurs here. Old fields in the center of 

 Grand Cayman (1390), leaves 5-6x3-4 cm. In all the above speci- 

 mens the inflorescence is slender, in the following, however, it is 

 thick and dense. Morro Hill (1058) and San Juan Hill (1044), Santiago 

 de Cuba. 



Inasmuch as A. tristis Linn, has been referred to A. Gangeticus 

 an Asiatic plant it is very doubtful whether this species, occurring as 

 abundantly as it does in the West Indies, is not an entirely different 

 plant from that of Linnaeus. It is easily recognized by its short bracts 

 a little longer than the flower; otherwise very near A. hybridus. 



Amaranthus viridis Linn. Sp. PI. 1005. 



Old fields south shore Culebras Island (587). San Juan Hill, 

 Santiago de Cuba (1045), depauperate; and along the Bodden Bay 

 road, Grand Cayman (1347). 



Distinguishable by its three narrow short sepals and conspicuously 

 rugose indehiscent utricle. 



Cyathula prostrata (Linn.) Blume Bijdr. 1825-6 =549. 



Achyranthes Linn. Sp. PI. 296. Dry sandy places near Port 

 Antonio, Jamaica (918, 969). 



Seems to differ from the Brazilian C. achyranthoides chiefly in 

 its longer, looser inflorescence. 



Achyranthes aspera obtusifolia (Lam.) Griseb. Fl. Br. W. I. 62. 



A. obtusifolia Lam. Diet. 1: 545. A. aspera Moq. de C. Prodr. 

 13:314. Dry fields about Santiago de Cuba especially at El Caney 

 (1050) and San Juan Hill (1080). Waste grounds near San Do- 

 mingo city (790). South shore of Culebras Island (570, 633). Hill- 

 sides back of Charlotte Amalia, St. Thomas (443, 514); and fields 

 near Spot Bay, Grand Cayman (1272). 



This form appears to be the most abundant one of the species. 

 It is characterized by its obovate very obtuse leaves, in contradis- 

 tinction to the var. argentea Griseb., in which the leaves are long- 

 acuminate; its flowers are not so long and sharp as those of var. 

 argentea, while its bracts are more or less roseate. tinged. 



Achyranthes aspera simplex Millsp. var. nov. 



A form closely related to var. obtusifolia but of smaller, strictly 



