POACEAE 89 
Staminate spikelets arranged along the 
panicle-branches below the summit: lemma 
usually awned; palea as long as the lemma. 
Pistillate spikelets terminating the main 
n 
the fertile lemma chartaceous-bony-indur- 
ate in fruit—Twenty species, mostly natives 
of tropical America. 
O. latifolia L. A tall woody-stemmed 
a ads perennial, I oblong i bcr 
lanceolate leaf-blades as much as . Wide, 
ong somewhat open panicles "10- 15 em. long, the n CR sity o 
m. lo 
ing or spreading, be earing one ee pistillate Spikelet a 
of Tam 
eral Ede along the side.—Regio mpa Bay, 
—The occurrence of this mes, at least at the pee time, in n Florida 
is doubtful 
39. ORYZA L. Swamp annuals or perennials, often tall, with flat leaf- 
blades and spikelets in open panicles. Spikelets 1-flowered, laterally com- 
pressed-flattened; glumes 2, much sho | ; 
he lemma, narrow: lemma rigid, 
keeled, 3-nerved, sometimes awned: palea 
similar to the lemma, narrower, keeled but 
with no midnerve on the back, 2-nerved 
close to the margins.—Seven apas mostly 
of the Old World tropics. 
1. O. sativa L. Stem erect, 50-100 em 
tall: panicles 10—30 em. long, the branches 
erect below drooping eA T = 
e 2 
2 
mm. long, oblong, hispid 
less.—(RıcE.)—Wet pla ae cu one me- 
times escaped, though SN pin ne 
yee ye on the Coastal Plain, Fla. to Tex. and Va. Nat. of trop. Asia.— 
(W. I., Mez., C. A., S. A.) 
40. HOMALOCENCHRUS Meig. Perennials, usually with creeping roo 
stocks, flat scabrous leaf-blades and usually open panicles, the spikelets dnd 
sessile along one side of the branchlets. Spikelets 1-flowered, strongly com- 
pressed laterally: glumes wanting: lemma chartaceous, broad, oblong, boat- 
shaped, usually 5-nerved, the lateral pair of nerves close to the ma en these 
and the keel often hispid-eiliate, the intermediate nerves som fain 
palea as long as the lemma, much narrower, usually 3-nerved, the keel a 
hispid-ciliate, nd lateral nerves close to the margins, elosely held by the mar- 
gins of the lemma: stamens 6 or fewer. [Leersia Sw.]—Ten species, of tropi- 
eal and S repre Ea 
Spikelets broadly oval, 3-4 m au 1. H. lenticularis. 
Spikelets elliptic, not over 1. E mm. , 
Panicle narrow, the branches Banaue: 2. H. hexandrus. 
