Lamilla

Bouteloua juncea (Desv.) Hitchc. Contr. U. S. Nat. Herb 17:343. 1913.
Trialhera jtincea Desv.; Beauv. Agrost. 40, 179. 1812.
Eulriana juncea Trin. Gram. Unifl. 238. 1824. (Type from Santo Domingo.) Eulriana Ledebourii Trin. Gram. Unifl. 238. 1824. (Type from Santo Domingo.) Atkeropogon domingensis Spreng. Syst. 1: 293. 1825. (Based on Trialhera juncea Desv.) Triaena jtincea D. Griff. Contr. U. S. Nat. Herb. 14: 354. 1912. (Based on Trialhera juncea Desv., misapplied.)
Perennial; culms very slender, branching, erect or decumbent-spreading, 5-30 cm. tall, glabrous; sheaths glabrous, with a tuft of long hairs at the throat; ligule ciliate, about 0.5 mm. long; blades involute, rarely flat, curved, 1-4 cm. long, or shorter in depauperate specimens, glabrous beneath, scabrous and pilose above, especially near the base; spikes usually 10-20, very slender, ascending, falling entire, bearing a single spikelet; spikelets short-bearded at the base; first glume 1 mm. long, abruptly acute or subobtuse, short-awned; second glume acuminate, 2.5-3 ram. long; fertile lemma 4 mm. long, 3-toothed, glabrous on the back, the margins sparsely pilose, the nerves e.xcurrent less than 0.5 mm.; rudiment reduced to 3 slender scabrous awns 5-9 mm. long.
Type locality: Hispaniola.
Distribution: Dry rocky hills and open ground, Cuba, Hispaniola, and Puerto Rico.

Perennials, Terrestrial, not aquatic, Stolons or runners present, Stems trailing, spreading or prostrate, Stems nodes swollen or brittle, Stems erect or ascending, Stems geniculate, decumbent, or lax, sometimes rooting at nodes, Stems caespitose, tufted, or clustered, Stems terete, round in cross section, or poly gonal, Stem nodes bearded or hairy, Stem internodes hollow, Stems with inflorescence less than 1 m tall, Stems, culms, or scapes exceeding basal leaves, Leaves mostly basal, below middle of stem, Leaves mostly cauline, Leaves conspicuously 2-ranked, distichous, Leaves sheathing at base, Leaf sheath mostly open, or loose, Leaf sheath hairy, hispid or prickly, Leaf sheath hairy at summit, throat, or collar, Leaf sheath and blade differentiated, Leaf blades linear, Leaf blades very narrow or filiform, less than 2 mm wide, Leaf blade margins folded, involute, or conduplicate, Leaf blades mostly glabrous, Leaf blades more or less hairy, Ligule present, Ligule a fringed, ciliate, or lobed membrane, Inflorescence terminal, Inflorescence with 2 or more spikes, fascicles, glomerules, heads, or clusters per culm, Inflorescence a panicle with narrowly racemose or spicate branches, Inflorescence with 2-10 branches, Inflorescence branches more than 10 to numerous, Inflorescence branches 1-sided, Inflorescence branches terminating in bristle or point, Flowers bisexual, Spikelets sessile or subsessile, Spikelets laterally compressed, Spikelet less than 3 mm wide, Spikelets with 1 fertile floret, Spikelets solitary at rachis nodes, Spikelets all alike and fertille, Spikelets bisexual, Spikelets disarticulating above the glumes, glumes persistent, Spikelets secund, in rows on one side of rachis, Rachilla or pedicel glabrous, Glumes present, empty bracts, Glumes 2 clearly present, Glumes distinctly unequal, Glumes shorter than adjacent lemma, Glumes equal to or longer than adjacent lemma, Glume equal to or longer than spikelet, Glumes 1 nerved, Lemmas thin, chartaceous, hyaline, cartilaginous, or membranous, Lemma 3 nerved, Lemma glabrous, Lemma body or surface hairy, Lemma apex dentate, 3-5 fid, Lemma awnless, Lemma mucronate, very shortly beaked or awned, less than 1-2 mm, Lemma margins thin, lying flat, Lemma straight, Palea present, well developed, Palea me mbranous, hyaline, Palea shorter than lemma, Palea 2 nerved or 2 keeled, Stamens 3, Styles 2-fid, deeply 2-branched, Stigmas 2, Fruit - caryopsis, Caryopsis ellipsoid, longitudinally grooved, hilum long-linear.