HITCHCOCK AND CHASE—GRASSES OF THE WEST INDIES. 29] 
genus, probably lacking material for verification of Grisebach’s description. 
Hackel places the genus in Oryzeae, and elsewhere describes a specimen of 
A. piptostachya as Arthropogon stipitatus, giving so clear and detailed a de- 
scription as to leave no doubt of its identity. Grisebach states that there is but 
1 stamen; we find 3, as did Hackel in the plant he described under Arthropogon. 
Achlaena is closely allied to the South American Arthropogon or is possibly 
congenerie. 
1, Achlaena piptostachya Griseb. Cat. Pl. Cub. 229. 1866, 
Arthropogon stipitatus Hack. Sitzungsb. Akad. Wiss. Math. Naturw. (Wien) 
89’: 125. 1884. 
A tufted perennial with stiffy erect culms 0.5 to 1 meter tall, elongate linear 
} firm blades mostly clustered toward the base, and a long-exserted panicle, the 
fascicled branches stiffly spreading or reflexed at maturity, the long-awned 
spikelets borne toward the ends. 
Open ground, Cuba and Jamaica. Originally described from Cuba, the type 
being Wright 3487. The type of Arthropogon stipitatus was collected in Cuba 
by Sagra. 
Cuba (Province of Pinar del Rio and Isle of Pines) and Jamaica (Dolphin 
Head, Britton & Hollick 2194). 
26. LEPTOCORYPHIUM Nees. 
Spikelets in narrow panicles; first glume wanting; sterile lemma empty, this 
and the second glume hairy; fertile lemma and palea brown with a white 
hyaline, somewhat lacerate or ciliate summit, open at maturity. 
1. Leptocoryphium lanatum (H. B. K.) Nees, Agrost. Bras. 84. 1829, 
Paspalum lanatum H, B. K. Nov. Gen, & Sp. 1: 94. pl. 29. 1816. 
Milium lanatum Roem, & Schult. Syst, Veg. 2: 322. 1817. 
Panicum fusciflorum Steud. Syn. Pl. Glum. 1: 93, 1854. 
Anthaenantia lanata Benth. Journ. Linn, Soc, Bot. 19: 39. 1881. 
A slender erect unbranched tufted perennial up to 1 meter tall, with long 
narrow often involute blades, and loose many-flowered oblong panicles with 
capillary branchlets and silky-pilose spikelets, the hairs at first appressed, at 
maturity spreading. 
Dry hills and pine barrens, southern Mexico and the West Indies to northern 
South America. Originally described from Mexico. The type locality of 
Panicum fusciflorum is French Guiana. 
Cuba, Porto Rico (Mayaguez),’ and Trinidad. 
27. VALOTA Adans. 
Spikelets in pairs, short-pedicellate in 2 rows along one side of a narrow 
rachis, the slender racemes aggregated in a narrow or flabellate panicle; spike- 
lets lanceolate, clothed with long silky hairs; first glume minute; fruit acumi- 
nate, brown with broad white hyaline margins, 
Racemes few, usually about 3; blades short, mostly not over 3 cm. long; plants 
20 to 40 cm. tall_______ -- ~---- ee 1. V. eggersii, 
Racemes numerous; blades elongate; plants usually more than 50 em. tall. 
Lower panicle branches in a fascicle on one side of the axis; spikelets 
densely clothed with tawny or brown silky hairs much exceeding the 
spikelet _ _-2. V. insularis, 
*Names of places in Porto Rico are here spelled without disereses and accents, 
following the usage of the United States Postal Guide. 
