BOTANY OF THE MAYA AREA


panicles open, 8 to 15 cm. long, the ascending to spreading branches with
capillary, few-flowered, spreading branchlets; spikelets 1.5 mm. long, pu-
bescent, the fruit exposed at the summit. Woods and open ground, especially
along trails, Mexico and the West Indies to Peru and Brazil.
 BRITISH HONDURAS. Belize District: Belize River, Lundell 3864. Mana-
tee River, Smart 66. Manatee Lagoon, Peck 314. Gracie Rock, Gentle
1571. El Cayo District: El Cayo, Bartlett 11447. Toledo District: Toledo,
Peck 637.
18. Panicum trichanthnm Nees, Agrost. Bras. 210. 1829. Sooc.
 Perennial; culms erect or decumbent, sometimes clambering over brush,
branching; blades lanceolate, 8 to 12 cm. long, 1 to 2.5 cm. wide, subcordate
at the base; panicles diffuse, 20 to 30 cm. long, nearly as broad, the branches
widely and rather stiffly spreading at maturity; spikelets long-pedicellate,
glabrous, 1.2 to 1.4 mm. long, the first glume one fifth as long. River banks,
lake shores, moist thickets and swampy places, Mexico and the West Indies
to Paraguay.
 BRITISH HONDURAS. Belize District: Big Falls, Manatee River, Smart
68. Toledo District: Columbia Branch, Rio Grande, Smart 42.
 GUATEMALA. Pet4n: El Paso, Lundell 1538. Lake Zotz, Lundell 3307.
Monte Santa Teresa, Lundell 2760.

19. Panicum bartlettii Swallen, Carnegie Inst. Wash. Pub. No. 436: 346. 1934.
 Closely resembling Panicum trichanthum; spikelets 1.8 to 2 mm. long,
pointed; first glume obtuse or subacute, half as long as the spikelet. Woods
and river bluffs, Mexico (Vera Cruz and Campeche), British Honduras and
Guatemala.
 BRITISH HONDURAS. Belize District: Maskall, Gentle 1070. Gracie Rock,
Gentle 1601. Manatee Lagoon, Peck 775. El Cayo District: El Cayo,
Bartlett 11452, 11983, 12016. Little Cocquericot, Lundell 3868, 3876.
Toledo District: Toledo, Peck 775.
 GUATEMALA. Petin: Uaxactun, Bartlett 12245. La Libertad, Aguilar 378.

20. Panicum parvifolium Lam. Tabl. Encycl. 1: 173. 1791.
 Perennial; culms very slender, freely branching, decumbent at the base
and rooting at the lower nodes; sheaths much shorter than the internodes,
pilose with stiffly ascending or spreading hairs; blades glaucous, mostly
1.5 to 2.5 cm. long, 2 to 4 mm. wide, often pilose; panicles 2 to 4 cm. long,
nearly as broad, the branches spreading, rather few-flowered; spikelets long-
pedicellate, 1.5 mm. long, the first glume broad, subacute, two-thirds as long
as the spikelet. Ravines, river banks, margins of ponds and wet open places,
Costa Rica, British Honduras and the West Indies to Paraguay.
 BRITISH HONDURAS. El Cayo District: Mountain Pine Ridge, Bartlett
 11612.

21. Panicum cyanescens Nees; Trin. Gram. Pan. 202. 1826.
 Perennial; culms erect, densely tufted, 30 to 50 cm. tall; blades 3 to 6 cm.
long, 2 to 6 mm. wide, glaucous, ascending or appressed, smooth or sca-
berulous; panicles usually 4 to 5 cm. long, as much as 6 cm. wide; spikelets
1.5 mm. long, subglobose; first glume, rounded or subacute, two thirds as
long as the spikelet. Moist sandy ground, swamps and wet savannas,
British Honduras, Cuba, and Trinidad to Brazil.