312 MISC. PUBLICATION 243, U.S. DEPT. OF AGRICULTURE 
cisco, Hkman 10984. Remates, Ekman 11173. Laguna de Arigua- 
nabo, Hkman 11512. Habana, Léon 5750. Cayo La Rosa, Ekman 
in 1921 (Amer. Gr. Nat. Herb. 993). Ciénaga de Zapata, Léon 9520. 
Isla de Pinos, Ekman 12426. 
JAMAICA: Grasmond Marsh, Harris 11749. 
Haiti: Miragoane, Hyerdam 168; Ekman H 6527. Port-Margot, 
Ekman H 2884. 
Dominican Repusuic: Jarabaco, Ekman H 14141. Sabana del 
Guabatico, Ekman H 11049. 
Purrto Rico: San Juan, Chase 6353. Humacao, Eggers 666. 
Campo Alegre, Chase 6801. 
2. Sacciolepis vilvoides (Trin.) Chase, Biol. Soc. Wash. Proc. 21: 7. 
1908. 
Panicum vilvoides Trin., Gram. Pan. 171. 1826. Brazil. 
Hymenachne flurratilis Nees, Agrost. Bras. 273. 1829. Brazil. 
Glabrous, apparently annual; aquatic; culms erect, branched only 
slightly from the base, succulent below, usually as much as 1 m tall 
or even taller; blades 15 to 20 cm long, usually narrow, sometimes 
as much as 5 mm wide; panicles elongate, mostly 20 to 40 cm long, 
about 8 mm thick, compact or more or less interrupted, especially 
toward the base, the branches very short; spikelets about 3 mm long, 
elabrous. 
Marshes and wet places, northern South America; Cuba. 
Cusa: Pinar del Rio, Ekman 17917; Hitchcock 23276. Los Al- 
macigos, Wright 3470. Herradura, Ekman 17793. Isla de Pinos, 
Curtiss 304; Britton and Wilson 15009, 15679; Ekman 12210. 
3. Sacciolepis myuros (Lam.) Chase, Biol. Soc. Wash. Proc. 21: 7. 
1908. 
Panicum myuros Lam., Tabl. Encycl. 1: 172. 1791. Cayenne. 
Hymenachne myuros Beauv., Ess. Agrost. 49, 165. 1812. 
Slender glabrous annual as much as 1 m tall; culms usually erect, 
branched only from the base, the lower part often succulent; blades 
elongate, erect, flat, narrow, sometimes as much as 7 mm wide; 
panicles erect, compact, spikelike, usually elongate, sometimes as 
much as 40 cm long, 3 to 5 mm wide, the branches usually very short, 
rarely the lower (appressed) as much as 3 cm long; spikelets glabrous, 
1.5 to 2 mm long (fig. 291, B). 
Marshes and wet places, Mexico to Brazil and Bolivia; Cuba. 
Cusa: Isla de Pinos, Curtiss 428; Ekman 11980, 12176; Britton and 
Wilson 14155, 14709. 
Dominican Repusuic: Cuenca, Ekman H 10971. 
TRINIDAD: O’Meara Savanna, Britton and Hazen 1566. Piarco 
Savanna, Britton and Hazen 712; Broadway 2142; Hitchcock 10356. 
Pitch Lake, Hitchcock 10085 (Amer. Gr. Nat. Herb. 303). Without 
locality, Bot. Gard. Herb. 3354. 
84. HYMENACHNE Beauv., Ess. Agrost. 48. pl. 10.f.8. 1812 
Spikelets acuminate, short-pedicellate in long dense spikelike or 
interrupted panicles; first glume one-third to half as long as the spike- 
let, remote, a distinct stipe below the second glume; sterile lemma 
5-nerved, acuminate, exceeding the lanceolate stramineous fruit; 
lemma and palea membranaceous, the margins of the lemma thin 
