Panicum. J 
GRAMINEJE. 
433 
Pedicels short 10. P. multinode. 
Pedicels reaching A- a in. long 11. P. biflorum. 
Spikelets small, acute. 
Tall, with large broad leaves. 
Leaves plicate, narrowed to base 12. P. plicatum. 
Leaves flat, rounded at base * P. acariferum. 
Middle sized, with linear leaves. 
Pedicels very short 13. P. auritum. 
Pedicels longer than the spikelets 14. P. madagascariense. 
Dwarf, procumbent, with small spreading lanceo- 
late leaves 15. P. parvifolium. 
Subgenus Oplismenus. Some of the glumes distinctly awned. 
Awns only on the glume of the lower barren flower 
and sometimes not developed (Echinochloa) . 
Spikelets in. long 16. P. colonum. 
Spikelets £ in. long * P. Crus-galli. 
Awns always distinct on the empty glumes ( Orthopogon ). 
Spikes simple 17. P. Balfourii. 
Spikes panicled. 
Spikes dense, £ in long 18. P. Burmanni. 
Spikes lax, 1-2 in. iong 19. P. compositum. 
Spikes lax, £ foot long 20. P. Benthami. 
1. P. conglomeratum, Bojer, Hort. Maur. 364, vix Lint?. 
Annual, forming a dense intertangled mass half a foot broad. Stems 
1-1J in. long, with 3-4 nodes. Sheaths in. long, finely pilose ; 
blade linear, acute, glabrous, J-f in. long. Spikelets 6-8 in a con- 
gested equilateral deltoid spike under J in. long, each ovate, acute, 
finely pubescent, in. long ; pedicels not more than half as long as 
the spikelets. 
Mauritius, a weed in the streets of Port Louis, etc. I have failed to identify 
this with any extra-Mauritian species. 
2. P. brizoides 9 Linn .; Kuntli , Enum. i. 79. Annual, tufted, 
glabrous throughout. Stems 1-2 feet long, with 4-5 nodes and leaves. 
Sheaths compressed, the upper ones 2-3 in. long ; blade 3-6 in. long, 
linear, obtuse. Panicle half a foot long, with 6-10 alternate dense 
spikes J in. long erect and ad pressed to the rachis ; spikelets secund, 
biserial on a narrow flattened naked rachis, glossy, greenish-white, 
oblong, subacute. Jacg. Eclog. Gram. i. t. 2 ; Trin. Ic. t. 158 — 9. P. 
flavidum, Betz. ; Bojer , Hort. Maur. 364. P. granulare, Lam. not 
Bojer. 
Mauritius, Rodriguez, and Seychelles, common in waste places and fields. 
Spread through the tropics of both hemispheres. Herbe de Riz petite espece. 
3. P. fluitans, Betz.; Kunth, Enum. i. 78. Tufted, perennial, 
glabrous in all its parts. Stems 2-5 feet long, geniculate and rooting 
at the lower nodes. Upper sheaths half a foot long ; blade linear, 
J-l ft. long, acute. Panicle f- ft. long, with 10-15 erect 
spikes |-1 in. long ; spikelets just like those of P. brizoides. P. 
2 v 
