364 The Botanical Gazette. [June, 
nearly equaling it, third and fourth glumes densely clothed 
along the margins with long, strict, white hairs, scabrous to- 
wards the apex, the awns one-half as long as the glumes; 
fifth glume emarginate at the apex and mucronate-awned, 
clothed with long strict white hairs at the Margin, its awn very 
short straight and scabrous. 
Brazil. 
CTENIUM PLANIFOLIUM Kth. Enum. Pl. 1: 275, 
Campulosus planifolius Presl. Rel. Haenk. 287. 
Culms two to two and one-half feet high, scabrous, espe- 
cially below the nodes; leaves scabrous on both sides; spike 
one, more than four inches long; first empty glume very much 
shorter than the spikelet; second empty glume nearly equal- 
ing the spikelet, 2-nerved, hirsute; third and fourth glumes 
pilose on the’ back and margins, the third with a straight awn 
as long as itself; the fourth with an awn twice as long as it- 
self; fifth glume a little longer than the lower ones, hirsute on 
the back, the margins densely white-pilose, terminated with 
a straight scabrous awn half as long as itself. 
Mexico. 
CTENIUM CAROLINIANUM Panz. in Denkschr. Akad. 
Muench. 1818: 311. 1814. 
Ctenium Americanum Spreng. Syst. 1: 274. 1825. 
Aegilops aromatica Walt. Flor. Car. 249. 
Campulosus aromaticus Scribn. Mem. Torr. Bot. Club 5: 45: 
Culms one and one-half to four and one-half feet high; 
leaves six to fourteen inches long, glabrous; spikes one or two, 
one and one-half to six inches long; first empty glume one- 
third as long as the second, which is about as long as the 
spikelet; third glume pilose at the base and along the mar- 
gins, awned below the apex with a stout spreading awn shorter 
as long as the fourth, similar to it, except for the much shorter 
and less spreading awn. 
North Carolina along the coast to Alabama. 
Department of Agriculture, Washington, D. C. 
i EXPLANATION oF Plate XXIX. a 
entum glandulosum Scribn. & Smith.—a, ¢, ¢, empty glumes 
florets: 4, third glume; é*, fourth glume; 43, fifth glume.—d ne 
glume and palea.—c. Sterile rudiments. 
