92 NORTH AMERICAN FLORA [VoLuME 17 
long-hairy, the fourth scale slightly if at all 2-toothed at the apex, the awn straight or 
nearly so, 1.5-2.5 cm. long, usually about 2 cm. 
TYPE LOCALITY: Carolina. 
DISTRIBUTION : New Jersey to Florida and Texas ; Cuba. 
ILLUSTRATIONS: Bull. U. S. Dep. Agr. Agrost.7: 7.3, 20: 7.8; Mart. Fl. Bras. 23: p/. 61, f. 
Bip ey Grasses N. Am. 2: 7.8; Bull. Tenn. Exp. Sta. 7: pl aan Britt. & Brown, At FLS. 
5. Erianthus laxus Nash, Bull. Torrey Club 24: 344. 1897. 
Stems 2-3 m. tall, pubescent, especially at the nodes, with appressed hairs, those at 
the apex and on the panicle-axis long and copious; leaf-sheaths, particularly the lower 
ones, densely hirsute, especially at the ends; blades 2-5 dm. long, 6-12 mm. wide, hirsute 
on both surfaces, the upper surface becoming glabrous; panicle 4-5 dm. long, 1 dm. wide 
or less, its elongate and ascending branches lax and flexuous, the larger 2-2.5 dm. long; 
spikelets loosely disposed, about one half as long as the basal hairs and much exceeded by 
the internodes, especially by the lower ones; outer 2 scales 4-5 mm. long, pilose with long 
hairs; fourth scale entire or shortly 2-toothed at the apex, the awn straight or slightly 
flexuous, about 2 cm. long. 
TYPE LOCALITY: Between Paola and the Wekiva River, Florida. 
DisTRIBUTION : Known only from the type locality. 
6. Erianthus brevibarbis Michx. Fl. Bor. Am. 1: 55. 1803. 
Saccharum brevibarbe Pers. Syn. Pl. 1: 103. 1805. 
Erianthus alopecuroides brevibarbis Vasey, Grasses U. S.17. 1883. 
Erianthus saccharotdes brevibarbis Hack. in DC. Monog. Phan. 6: 131. 1889. 
Stems 1-1.5 m. tall, the nodes pubescent with readily deciduous hairs, the summit and 
panicle-axis glabrous; leaf-sheaths rough, the summit appressed-hirsute ; blades 1.5-4 dm. 
long, 6-10 mm. wide, rough; panicle 2-3 dm. long, about 3 cm. wide, its branches erect, 
the larger 2-7 cm. long; spikelets crowded, exceeding the basal hairs and a little less than 
twice as long as the internodes; outer 2 scales 8-9 mm. long, sparingly pilose; fourth scale 
usually entire at the apex, the awn straight, 1.5-2.5 cm. long. 
TYPE LocALIty: Tennessee. 
DISTRIBUTION: Delaware to Florida, west to Louisiana. 
ILLUSTRATIONS: Ell. Bot. S. C. & Ga. 1: ffi 1, 7.2; Bull. Tenn. Exp. Sta.7: pl. 1, f. 3 ; Britt. 
& Brown, Ill. Fl. f. 214. 
7. Erianthus strictus Baldw.; Ell. Bot. S. C. & Ga. 1: 39. 1816. 
Saccharum Baldwint Spreng. Syst. 1: 282. 1825. 
Pollinia dura Trin. Mém. Acad. St. Petersb. VI. 42: 91. 1838. 
Stems 1-2 m. tall, the nodes usually pubescent with readily deciduous hairs, the sum- 
mit and the panicle-axis glabrous; leaf-sheaths glabrous; blades 2-7 dm. long, 5-10 mm. 
wide, rough on the margins but otherwise smooth ; panicle 2-4 dm. long, 1-2 cm. wide, 
its branches appressed, the larger 5-8 cm. long; spikelets crowded, about one half again 
as long as the internodes, the basal hairs wanting or sparse and less than one quarter as 
long as the spikelet ; outer 2 scales 8-10 mm. long, strongly appressed-hispid ; fourth scale 
entire, the awn 1.5-2 cm. long, straight. 
TYPE LOCALITY: Savatinah, Georgia. 
DISTRIBUTION : Tennessee to Florida, west to Texas. 
ILLUSTRATIONS: Bull, U. S. Dep. Agr. Agrost.7: f.¢4; Bull. Tenn. Exp. Sta.7: pl. 1, f. 2. 
8. Erianthus Trinii Hack. in DC. Monog. Phan. 6: 135. 1889, 
Saccharum giganteum Trin. Mém. Acad. St. Petersb. VI. 2: 311. 1832. Not S. giganteum Pers. 
1805. 
Spodiopogon foliatus Fourn. Mex. Pl. Gram. 52. 1881. 
Spodiopogon foliatus erubescens Fourn. Mex. Pl. Gram. 53. 1881. 
Spodiopogon vaginatus Fourn. Mex. Pl. Gram. 53. 1881. 
Erianthus saccharoides Trinii Hack. in Mart. Fl. Bras. 23; 258. 1883. 
Stems up to 5 m. tall; leaf-sheaths glabrous or pubescent; blades glabrous or pubes- 
cent, 1m. long or more, up to 2.5 cm, wide, long-acuminate; panicle up to 5 dm. long, 
oblong, the axis appressed-hirsute, the branches erect or nearly so; spikelets 5-6 mm. long, 
