THE GRASSES OF BRITISH HONDURAS AND THE PET1N, GUATEMALA 171

 BRITISH HONDURAS. Toledo District: Tcmash River, Schipp 1372.
 GUATEMALA. Petkn: El Paso, Lundell 1474. The specimens of this
 collection are more slender with narrower blades than typical P. boliviense.
 Usually the blades are 1.5 to 2 cm. wide, while these are 7 to 12 mm. wide.
 13. Panicum polygonatum Schrad. in Schult. Mant. 2: 256. 1824.
 Perennial; culms slender, widely creeping, the nodes pubescent; blades
 rather thin, cordate, lanceolate, mostly 5 to 8 cm. long, 5 to 10 mm. wide,
 the margins scabrous; panicles open, loosely flowered, the branchlets ap-
 pressed or spreading, usually second along the lower side of the branches.
 River banks and moist places along roads and in open woods, Mexico to
 Paraguay.
 BRITISH HONDURAS. Toledo District: San Pedro, Smart 44.
14. Panicum pulchellum Raddi, Agrost. Bras. 42. 1823.
 Perennial; plants rather delicate, widely creeping, rooting at the pubescent
 nodes, the slender fertile branches ascending or erect; sheaths much shorter
 than the internodes, more or less pilose, the margins ciliate; blades obovate,
 asymmetrical, 1.5 to 5 cm. long, 8 to 18 mm. wide (commonly 2 to 4 cm.
 long and 1 to 1.5 cm. wide), pilose to nearly glabrous; panicles 3 to 10 cm.
 long, the branches usually 1 to 1.5 cm. long, distant, stiffly spreading, spikelet-
 bearing from the base; spikelets 2 mm. long, pilose, the back of the sterile
 lemma with two crateriform glands. Shady banks, moist thickets, and
 woods, southern Mexico and Windward Islands to Brazil.
 BRITISH HONDURAS. Belize District: Gracie Rock, Gentle 1539. Manatee
 Lagoon, Peck 279. El Cayo District: El Cayo, Bartlett 11443. Stann
 Creek District: Big Creek, Schipp 180, 884.
 GUATEMALA. Pet6n: La Libertad, Lundell 2120, 2545; Aguilar 185.

15. Panicum frondescens Meyer, Prim. Fl. Esseq. 56. 1818.
 Perennial; culms slender, widely creeping, rooting at the nodes, freely
branching, the branches erect or ascending, mostly 15 to 30 cm. tall; blades
lanceolate, acuminate, 5 to 11 cm. long, mostly 10 to 12 mm. wide (rarely
more than 15 mm.); panicles 4 to 11 cm. long, the numerous crowded
racemes densely flowered, becoming spreading, 10 to 25 mm. long; spikelets
2.7 mm. long. Shady river banks, swamps, and moist places, Mexico to
Brazil.
 Bmnsn HONDURAS. Toledo District: Temash River, Schipp 1377.

16. Panicum schiffneri Hack. Ergeb. Bot. Exped. Akad. Wiss. Sidbras. 11. 1906.
 Perennial; culms 2 to 3 m. long, straggling or clambering, freely branching,
rooting at the nodes, pilose below the nodes or nearly glabrous; blades 5 to
15 cm. long, 1 to 2.5 cm. wide, sparsely pilose, the margins scabrous; pani-
cles pyramidal, about 10 cm. long, the branches ascending to spreading, the
lower ones naked below; spikelets 1.5 mm. long, densely clustered on the
short branchlets; fruit sparsely silky. Wet shady banks, southern Mexico
and the West Indies to Brazil.
 GUAT.EMALA. Peten: Uaxactun, Bartlett 12209.
17. Panicnm trichoides Swartz. Prodr. Veg. Ind. Occ. 24. 1788.
 Annual; culms slender, freely branching, widely creeping; blades thin,
ovate-lanceolate, 4 to 7 cm. long, 8 to 15 mdi. wide, ciliate at the base;