THE GRASSES OF BRITISH HONDURAS AyND TIE PETEN, GUATEMALA 169

waste places and cultivated ground, Florida, Texas and the West Indies
to Brazil and Peru. Frequently grown for forage.
 BRITISH HONDU{n S. Orange Walk District: Honey Camp, Lundell 594.

4. Panicum aquaticum Poir. in Lam. Encycl. Suppl. 4: 281. 1816.
 Perennial; culms decumbent, rooting at the lower nodes, glabrous, the
ascending ends mostly 20 to 40 cm. tall; blades flat, acute, usually stiffly
spreading, 5 to 12 cm. long, 5 to 10 mm. wide; panicles about 10 cm. long,
rarely larger, the branches rather stiffly ascending; spikelets appressed,
3 mm. long; first glume subacute, broad and clasping, about 1 mm. long.
Margins of streams and ponds and in wet places, southern Mexico and Cuba
to Paraguay.
 BRITISH HoNDURns. Belize District: Gracie Rock, Gentle 1635.

5. Paniunm maximum Jacq. Coll. Bot. 1: 76. 17S6.
 Culms erect in large clumps, 1 to 2.5 m. tall; blades flat, sometimes
nearly 1 m. long, 1 to 3 cm. wide, glabrous or somewhat hirsute toward
the base, the margins scabrous-serrate; panicles usually about 30 cm. long,
the branches naked below, the lower whorled; spikelets 3 to 3.5 mm. long,
glabrous, the first glume acute, one-third as long as the spikelet; fruit
transversely rugose. Cultivated for forage, sometimes escaped. Florida,
Mexico, and the West Indies to Bolivia and Brazil. Introduced from Africa.
 BRITISH HONDURAS. Corozal District: San Antonio, Lundell 4949; Gentle
119. Belize District: Manatee Lagoon, Peck 195.

6. Panicum ichnanthoider Foarn. Mex. P1. 2: 30. 1886.
 Perennial; culms in large clumps, 1.5 to 2 m. tall, erect or decumbent
at the base, smooth and hard; sheaths shorter than the internodes, pubescent
on the margins; blades flat, elongate, 8 to 15 mm. wide, villous on the upper
surface near the base; panicle 20 to 40 cm. long, the long slender branches
ascending; spikelets 3.5 to 4.2 mm. long. Open rocky hillsides, southern
Mexico, British Honduras and Nicaragua.
 BRITISH HoND RAS. Belize District: Manatee Lagoon, Peck 73.

7. Panicum altum Hitchc. & Chase, Contr. U. S. Nat. Herb. 17: 488, f. 57. 1915.
 Perennial; culms stout, reedlike, tangled, decumbent and straggling at
the base, 2 to 4 m. tall, glaucous, sometimes with erect sterile branches
at the swollen nodes; blades flat, 30 to 45 cm. long, 8 to 15 mm. wide, the
margins scabrous; panicles narrowly o'void, 20 to 30 cm. long, the slender
scabrous branches fascicled, ascending to spreading, some naked at the
base; spikelets short-pedicellate, 3.2 to 4 mm. long, turgid; glumes and
sterile lemma strongly nerved, gaping, the first glume two thirds the length
of the spikelet. Marshes near the seacoast, British Honduras to Trinidad.
 BRITISH HoNnURAs. Orange Walk District: Honey Camp, Meyer 110.
Belize District: Manatee Lagoon, Peck 123.

8 Panicum stenodoides F. T. Hubb. Proc. Amcr. Acad. 49: 497. 1913.
 Perennial; culms densely tufted, slender, erect. 20 to 40 cm. tall, with
slender, leafless panicle-bearing branches from the upper nodes; sheaths
papillose-pilose, the lowermost bladeless, becoming fibrous; blades erect,
involute toward the tip, 3 to 8 cm. long, 1 to 2 mm. wide, papillose-pilose