BOTANY OF THE MAYA AREA


pressed toward the ends of the rather stout scabrous branches; glumes 8 to
10 mm. long; lemma scabrous on the keel, the central awn subterete,
straight or arcuate, 10 to 15 mm. long, the lateral awns usually less than
1 mm. long. Rocky hills and open usually dry places, Arizona and Cuba
to Colombia.
 BRITISH HONDURAS. Belize District: Manatee Lagoon, Peck 72.

2. Aristida capillacea Lam. Tabl. Encycl. 1: 156. 1791.
 Annual; culms delicate, erect, freely branching at the base, 5 to 25 cm.
tall; blades conduplicate, 1 to 5 cm. long, about 0.8 mm. wide, with scabrous
margins; panicles usually tinged with purple, 2 to 8 cm. long, the capillary
branches spreading, more or less flexuous, naked below, not more than
2 cm. long; glumes subequal, acuminate, 2.5 to 3 mm. long; lemma 2 mm.
long, tapering into a slender, twisted column 1.5 to 2 mm. long; awns 5 mm.
long, divergent. Open ground, Mexico to Brazil and Bolivia.
 BRITISH HONDURAS. El Cayo District: Mountain Pine Ridge, Bartlett
11678.

3. Aristida recurvata H.B.K. Nov. Gen. & Sp. 1: 123. 1815.
 Perennial; culms tufted, erect, 0.5 to 1 m. tall, glabrous; blades firm, flat,
involute pointed, with thickened margins, 15 to 25 cm. long, 1.5 to 2.5 mm.
wide, becoming curled and flexuous with age; panicles 10 to 30 cm. long,
narrow, dense, erect, the short branches approximate, densely flowered,
appressed; glumes equal, about 1 cm. long, acuminate, awn pointed; lemma
4 mm. long, the twisted column 2 to 3 mm. long; awns about 1 cm. long,
loosely spiral, becoming implicate. Prairies and dry hillsides, British Hon-
duras to Brazil.
 BRrrisH HONDmAAs. El Cayo District: Mountain Pine Ridge, Bartlett
11778, 11606.

4. Aristida orizabensis Fourn. Mex. P1. Gram. 78. 1886.
 Aristida pscudospadicea F. T. Hubb. Proc. Amer. Acad. 49: 500. 1913.
 Perennial; culms slender, 0.5 to more than 1 m. tall, glabrous; blades
more or less flexuous, flat or folded toward the base, becoming involute-
pointed; panicles 15 to 30 cm. long, the branches distant, the upper ap-
pressed, the lower often spreading, usually less than 8 cm. long; spikelets
appressed to the branches; glumes 8 to 10 mm. long, awn-pointed, the
second a little longer than the first; lemmas 8 to 12 mm. long, the slender
twisted beak 3 mm. long; awns 1 to 2.5 cm. long, about equally divergent,
the central a little longer than the lateral ones. Savannas, thickets, and
rocky hills, Mexico to Panama.
 BRITISH HONDURAS. Belize District: Manatee Lagoon. Peck 31. El Cayo
District: El Cayo, Bartlett 11518. Mountain Pine Ridge, Bartlett 11697,
11860. Stann Creek District: Middlesex, Schipp 892.

 10. ANTHEPHORA Schreb.
1. Anthephora hermaphrodita (L.) Kuntze, Rev. Gen. PI. 2: 759. 1891.
 Annual; culms erect or decumbent at the base, branching, rooting at the
lower nodes, 15 to 50 cm. tall; blades flat, 5 to 20 cm. long, 4 to 7 mm. wide;
spikes erect, 5 to 10 cm. long; spikelets in groups of 4, the first glumes 5
to 7 mm. long, acute, indurate, forming a sessile, erect false involucre which