No. 1. 
ELIONURUS TRIPSACOIDES H. B. K. (EF. ciliaris H. B. K.) 
Plant perennial, with short rootstock, smooth throughout or with slight pubes- 
cence near the ligule. 
Culms, loosely tufted, erect, branching, solid, terete, glabrous and shiny, 2 to 
4 feet tall. 
Leaves; radical few, the broad loose sheaths tapering into the long involute 
blades with scarcely a contraction at the ligule; of culm 6 to 12; sheaths rather 
loose, open above, lower ones exceeding internodes, upper ones guhortor: blades in- 
voltite, slender, 4 to 12 inches long; ligule jomsbraanccous, ciliate, truncate, 3 line 
long or less. 
Inflorescence consisting of a terminal, and several distant, long-peduncled, 
lateral spikes. Spikes linear, 3 to 4 inches long, cylindrical; two appressed, 1- 
flowered spikelets at each node of the hairy rachis, one sessile and perfect, and one 
staminate on a stout hairy pedicel 14 lines long. 
essile spikelet narrowly lanceolate; first glume lanceolate; nearly flat, bifid 
at apex, acute or obtusish, rigid, herbaceous, ciliate on the prominent marginal 
nerves, 5 to 7 other less prominent nerves; second glume lanceolate, membrana- 
ceous, smooth, obscurely 3-nerved, 2$ to 3 lines long; third and fourth glumes 
lanceolate, acute, scarious, thin, smooth, the third ciliate, obscurely 3-nerved, 14 
to 24 lines long; palet small or wanting; pedicellate spikelet similar, but all parts 
smaller and the first glume always acute at apex; stamens 3. 
PuaTE I; A, two spikelets, lower one perfect, upper one staminate, a to f, 
parts of perfect flower; a, first empty glume, extreme forms, dorsal view; and }, 
ventral view; c, second empty glume; d, third empty glume; e, floral glume; f, 
palet. Capital letters A, E indicate corresponding parts of staminate flower. 
Dr Havard states that this grass constitutes a large portion of the vegetation 
of the plains of southern Texas. It occurs in Mexico, and also in Florida. 
