574 GRAMINEJX. (GRASS FAMILY.) 
glumes long-pointed, the upper 7-nerved, one third longer than the obtuse per- 
fect flower; sterile flower 3-androus. — Sandy soil, Florida, and northward. 
Aug. and Sept. | — Culms several in a cluster. Leaves smooth, flat (green), 
1° or more long. Glumes purplish. 
10. P. amarum, Ell Glaucous; culms stout; branches of the slender 
. contracted panicle smooth, appressed ; leaves long and rigid, soon convolute ; 
spikelets ovate-lanceolate (2’ long), short-stalked ; upper glume pointed, strongly 
7-nerved, one third longer than the oblong obtuse perfect flower, and equalling 
the 3-androus sterile flower. — Drifting sands along the coast, Florida, and north- 
ward. Sept. )| — Plant salt and bitter to the taste. 
1. P. fasciculatum, Swartz. Smooth; culms erect (19 high), branch- 
ing; leaves membranaceous, linear-lanceolate ; panicle contracted, 3' - 4' long, 
with the mostly simple branches erect; spikelets deep green, obovate, acute ; 
glumes smooth, the upper one strongly 7-nerved and reticulated, 2-3 times as 
long as the lower one, barely longer than the tumid rugose perfect flower ; sterile 
flower neutral (P. fuscorubens, Lam.)— South Florida. Oct. y 
+ + Sterile flower of one palea, neutral. 
19. P. proliferum, Lam. Smooth; culms thick and succulent, ascending, 
branched, geniculate ; panicles lateral and terminal, diffuse ; spikelets lanceolate- 
ovate, acute, somewhat crowded on the straight branches ; upper glume 7-nerved, 
3-4 times as long as the lower; perfect flower pointed. (P. geniculatum, Muhl.) 
— Wet places near the coast, Florida, and northward. Sept. (1)— Culms 1?- 
3° long. ies 
13. P. capillare, L. Culms erect, simple or branched ; leaves and sheaths 
hirsute; panicles lateral and terminal, the very slender branches at length re- 
flexed; spikelets lanceolate-ovate, scattered on long and capillary pedicels; 
upper glume 5-nerved, pointed, twice as long as the lower; perfect flower obtuse. 
(P. strigosum, Ell. ?) — Sandy fields, Florida, and northward. Sept. @— 
Culms 1° - 2° high. "e 
14. P. divergens, Muhl. Culms slender, fragile, sparingly branched; 
leaves subulate, rough on the upper surface and margins; the smooth sheaths 
longer than the joints; panicle diffuse, bearded at the axils; spikelets small, 
spindle-shaped, solitary at the summit of very long (2! —4') and rough pedun- 
cles; lower glume minute; perfect flower lanceolate-oblong, acute, nearly as 
long as the upper glume and neutral palea. (P. autumnale, Bosc.) — Dry sandy 
soil, South Carolina, and northward. Aug. | — Culms 1° high. Leaves 2'- | 
4' long. we : ee 
C P. verrucosum, Muhl Smooth; culms very slender, branched ; : 
the lower minute. 
2°- 4° | 1 
