22 
5. E. mollis Kth. Gram. 1. p.30. (Panicum molle Michx.?) Culms stout, 2 to 4 
feet high, sometimes branched, leafy; leaves linear-lanceolate, rather rigid, acuminate, 
smooth, erect, 10 to 18 inches long,3 to 6 lines wide; sheaths long, smooth, striate; 
panicle 6 to 12 inches long, with numerous (15 to 20 or more) more or less spreading 
branches, the lower ¥ to 3 inches long; rachis and upper part of stem downy, pube- 
scent; spikelets 2-flowered, 2 to 2} lines long, acute; the sterile flower with 3 stamens; 
fertile glume oblong, hardly acute.—South Carolina to Florida (A. H. Curtisa). 
PANICUM Linn. 
Spikelets with one perfect terminal flower, and usually a second one 
male only or rudimentary. Empty glumes 2 or 3, one smaller than the 
other, often minute, or rarely wanting. The glume of the perfect flower 
with its palet usually of a coriaceous texture, and obtuse or obtusish. 
The second flower when present a thin palet and 3 stamens, or the 
palet wanting. Inflorescence spicate or paniculate. 
§ 1. Digitaria Benth. 
Panicles of several spikes or spike-like branches, digitate or approxi- 
mate at the top of the culm; spikelets usually small and in alternate 
pairs along one side of the flattened rachis, 1 sessile and 1 short-pedi- 
celed; empty glumes 2, or sometimes 3, the lower one then being 
minute. 
1. P. glabrum Gaudin. 
2. P. sanguinale Linn. 
3. P. filiforme Linn. 
4, P. serotinum Trin. 
§ 2. TRICHACHNE Benth. 
Spikelets densely silky-hairy, or fringed with long hairs, sessile or 
short-pediceled, in pairs or clustered along the rachis of the numerous 
simple, erect, spikes or branches of the panicle, acute; lower glume 
very minute. 
5, P. leucopheeum H. B. K. 
6. P. lachnanthum Torr. 
§ 3. SUBSPICATA Vasey. 
Panicle linear or narrow, the branches short, sessile, erect or ap- 
pressed, or the apex spicate. 
(a) Branches densely flowered. 
7. P. paspaloides Pers. 
8. P. Curtisii Chapm. 
9. P. obtusum H. B. K. 
10. P. reticulatum Torr. 
11. P. Texanum Buckl. 
(b) Branches lax flowered, 
12. P. Chapmani Vasey. 
13. P. Reverchoni Vasey, 
14. P. subspicatum Vasey, 
15. P. stenodes Griseb, 
