HITCHCOCK AND CHASE GRASSES OF THE "WEST INDIES. 281 



Wet sandy open swamps or savannas, West Indies and Central America to 

 Brazil. Originally described from tlie "Antilles." The type of Hypogynium 

 spathifloruin is from Brazil and that of Anatherum inenne from Colombia. 



Cuba, Santo Domingo, Porto Rico, and Trinidad. 



9. Andropog'on salzmanni (Trin.) Nash, N. Amer. Fl. 17: 104. 1912. 

 Rottboellia salzmanni Triu. ; Steud. Syn. PI. Glura. 1: 361. 1854. 

 Andropogon imberbis var. muticus Hack, in DC. Monogr. Phan. 6: 380. 1889. 

 A glabrous, sparingly branched, ascending perennial with compressed culms, 



long linear flexuous or curled blades, and yellow, nearly glabrous racemes of 

 appressed awnless spikelets. 



Sandy hills, southern Mexico to Brazil ; also in a few West Indian islands. 

 Originally described from Brazil. 



Guadeloupe, Dominica, and Martinique. 



10. Andropogon caricosus L. Sp. PI. ed. 2. 1840. 1763. 



Andropogon annidatus var. subrepens Hack. Notizbl. Bot. Gart. Berlin 1: 327. 



. 1897. 



A decumbent, freely branched low perennial with flat blades 2 to 8 cm. long 

 and .solitary or paired racemes, the sterile spikelets as conspicuous as the fertile 

 ones, giving the appearance of a flat 2-ranked scaly spike ; awns slender, twisted, 

 and bent. 



Waste places ; introduced in a few places in the West Indies from southern 

 Asia. Originally described from India. Andropogon annulatus var. subrepens 

 was described from Guadeloupe, Duss 3678 being the type. 



Cuba (Province of Habana) and Guadeloupe. 



11. Andropog-on nodosus (Willera.) Nash, N. Amer. Fl. 17: 122. 1912. 

 Dichanthium nodosum Willem. Ann. Bot. Usteri 18: 11. 1796. 

 Similar to the preceding, somewhat larger, blades and racemes longer. 

 Waste places ; introduced in a few places in the West Indies from the Tropics 



of the Old World. Originally described from Mauritius. Probably only a 

 variety of A. caricosus. 



Antigua, Guadeloupe, and Barbados. 



12. Andropogon Mrtiflorus (Nees) Kunth, R6v. Gram. 2: 569. 1832. 

 Streptachne domingensis Spreng. ; Schult. Mant. 2: 188. 1824. 

 Schizachyrium Mrtiflorus Nees, Agrost. Bras. 334. 1829. 

 Aristida? domingensis Kunth, R6v. Gram. 1: 62. 1829. 

 Andropogon oligostacliyus Chapm. Fl. South. U. S. 581. 1860. 

 Andropogon semiberbis var. incertus Hack, in DC. Monogr. Phan. 6: 370. 1889. 

 Schizachyrium domingense Nash, N. Amer. Fl. 17: 103. 1912. 

 Andropogon domingensis Hubbard, Proc. Amer. Acad. 49: 493. 1913, not 



Steud. 1821. 



A tall slender erect tufted flat-stemmed perennial, with long narrow flat 

 blades and erect short-pilose racemes, the twisted awns about 1 cm. long. 



Rocky or gravelly hills or flats, Florida, through the West Indies to Para- 

 guay. Originally described from Brazil. The type of Streptachne domingensis 

 is from Santo Domingo ; of Andropogon oligostachyus from middle Florida, 

 and of A. semiberbis var. incertus from eastern Cuba {Wright 1558). 



Cuba, Jamaica (southern Manchester), Haiti (Marmalade), and Porto Rico 

 (Maricao). 



13. Andropogon tener (Nees) Kunth, Rv. Gram. 2: 565. 1832. 

 Schizachyrium tenerum Nees, Agrost. Bras. 336. 1829. 



Similar to the preceding, densely tufted, more slender, the blades narrower, 

 more or less involute, the numerous slenfler racemes rarely 5 cm. long. 



