102 POACEAE > 
macrus (Trin.) A. Hitehe. Stem 40-70 em. tall: rootstocks ra d 
leaf- blades 2-3 mm. wide, flat at base: um anicle mov, partially ineluded in . 
the NC sheath, the branches appressed, 2 m. long: spikelets Er eium 
abou ong: glumes somewhat E ui lightly shorter than the nearly 
Sa ee aed palea.— Wet PIU. Coastal Plain, Miss. and La. 
S. virginicus (L.) Kunth. Stem 15-50 em. tall: leaf- eed mu 
blades firm, flat or beeoming involute, eonspieuously bars us the sterile 
shoots: panicle exserted, dense and spike-like, 3—10 cm. lo E ds. about 
m. long; glumes somewhat unequal, E second as iis as the ma or 
E — Sandy beaches, Coastal Plain, Fla. to Tex. and N. C.— (IF. I., Mez., 
C. A., S. A.)—4A. robust form, S. littoralis Tam.) Kunth, with culms as much 
as 100 cm. tall, and panicles as much as 15 cm. long, i s found i n S. Fla. 
5. S. Torreyanus (Roem. & Schult.) Nash. Stem ae S un a short root- 
stock: rd bode flat, rather lax: panicle narrow, open, the branches ascend- 
ing. . compressus ( Torr.) Kunth]|—Acid bogs in ae Coastal Plain, 
Ga. to N. J. 
6. S. Berteroanus (Trin) H. & C. dps a a 40-100 em. tall: 
leaves mostly basal, the blades flat Mns uch as wide, tapering to 
a long involute point: panicle 10-40 e ie. qa ihe anie appressed, 
usually interrupted below: spikelets ren 2 l broad, obtuse, 
the second about half as long as the lemma, the first a little shorter. [ - 
ge E M is e inflorescence often T 
by a us.)— hammocks, pinelands, prairies, and c 
grounds, cn ae and pales Blue Ridge, Fla. to Tex., and Va—(W. pi 
C. A., S. A.)—S. indicus (L.) R. Br. has been collected on ballast at 
Mobile Differs from S. Berteroanus in having slender, secund, loosely ascend- 
ing panicle-branches and slender lax leaf-blades: glumes nearly equal, about 
3 mm. long.—(W. I., Mex., C. A., S. A.) 
S. clandestinus (Spreng.) A. Hitche. Stem erect, 60-120 cm. tall: leaf- 
blades attenuate in slender involute points: panicle 5-15 cm. long, pend 
m 
ore or less enclosed in the sheaths: glumes 3-5 mm. long: lem 6-7 
long, a A excee y e acuminate or subulate- PM B. 
[S. canovirens Nash]—Sandy soil, prairies, sand-hills, woods, and uplands, 
various provinces, Fla. to Tex., Kans., Conn 
er (Michx.) Kun Stem erect, rather stout, 50-150 em. tall: leaf- 
blades. xs glabrous a near the Das : panicle 10-20 cm. long, often 
more or less enelosed in the sheaths: first M about half as long as the 
spikelet, the second a little shorter than the spikelet: lemma slightly exceed- 
.]—Dr 
ed often on prairies, various provinces, Miss. to Tex., N. D., and Me.—Sporo- 
s Drummondii (Trin.) bs s differing from S. asper in "being less robust, 
Ho panieles less dense and more attenuate, the branches slender and ascendi a 
i s somewhat smaller, is oer considered Ene medi distinet from S. asper 
It occurs in Miss. and Tex 
9. S. argutus s 2 Stems tufted, usually geniculate at base, some- 
timés prostrate, 20—40 em. long: leaf-blades mostly les less than 10 em. long, flat 
paniele pyramidal, 2— 10 c em. long.—Open, especially iade Soil, various prov- 
de W Bosw to Ariz and Kans.; also hammocks, and cult. grounds, S Fla.— 
M I. Mez., C. A., S. A.) 
S. domingensis (Trin.) Kunth. Stem erect, 30-50 em. tall: leaves mostly 
ur the blades flat, 2—4 mm. wide, involute-pointed: paniele contracted, ob- 
lo dpi n midal or spike- like, 5-15 em. long.—Rocky or sandy soil and dunes, 
on or near the coast, S Fla.—(W. I., Mex.) 
