400 MISC. PUBLICATION 243, U.S. DEPT. OF AGRICULTURE 
28. Andropogon angustatus (Presl) Steud., Syn. Pl. Glum. 1: 370. 
1854. 
Diectomis lara Nees, Agrost. Bras. 340. 1829. Not Andropogon 
laxus Willd., 1806. Brazil. 
Diectomis angustata Presl, Rel. Haenk. 1: 333. 1830. Mexico. 
Andropogon apricus Trin., Mém. Acad. St. Pétersb. VI. Sci. Nat. 
2: $3.) W836. - (Brazal. 
Erect slender perennial about 1 m tall; blades flat, elongate, 1 to 2 
mm wide; racemes in pairs, 2 to 3 cm long, the pairs on slender 
branches from several of the upper leaves, forming a loose inflores- 
cence, each branch at first enclosed in a spathe but finally exserted 
5 to 10 cm; pedicels and joints of rachis stiffly ciliate with whitish 
hairs; fertile (sessile) spikelet about 6 mm long, laterally compressed, 
nearly glabrous, the callus sharp, barbate, 1 mm long; first glume 
narrow, deeply sulcate on the back; second glume compressed, keeled, 
bearing from the apex a slender divergent awn 1 cm long; awn of 
fertile floret geniculate, twisted, brown, scabrous-hispidulous, 3 to 4 
em long. 
Dry savannas, Mexico to Brazil; Cuba. 
Cupa: Manacas, Léon 5841. Holguin, Ekman in 1922. Isla de 
Pinos, Ekman 12520. | 
29. Andropogon saccharoides Swartz, Prodr. Veg. Ind. Occ. 26. 
1788. Jamaica. SILVER BEARDGRASS. 
Andropogon saccharoides subsp. leucopogon subvar. paucirameus 
Hack., in DC., Monogr. Phan. 6: 497. 1889. Cuba, Wright 1556. 
Sorghum saccharoides Kuntze, Rev. Gen. Pl. 2: 792. 1891. 
Holeus saccharoides Kuntze, in Stuckert, An. Mus. Nac. Buenos 
Aires 11: 48. 1904. 
Amphilophis saccharoides Nash, N. Amer. Fl. 17: 125. 1912. 
Andropogon saccharoides var. surius Krause, Bot. Centbl. Beihefte 
32: 334. 1914. Barbados, Wiegand 2085. 
Erect perennial; culms simple, brittle, 60 to 150 cm tall; nodes 
white-hispid; blades flat, glabrous or nearly so, 2 to 8 mm wide; 
panicles exserted, 5 to 15 cm long, oblong, pale, silky, of numerous 
crowded, ascending racemes; awns 1.5 to 2 em long (fig. 356). 
Rocky hills and grassy slopes, southwestern United States to South 
America and the West Indies. The Cuban specimens were referred 
by Hitchcock * to A. leucopogon Nees. Several of them and a few 
from other islands are the form with fewer racemes described as 
subvar. paucirameus. This is one of the grasses called ‘‘rabo de 
zorra”’ in Cuba. 
Cupa: Vinales, Léon 15346. Habana, Léon 2557, 4716. Sancti 
Spiritus, Léon 893, 955, 4097, 4101, 5357; Shafer 12073. Manajanabo, 
Léon 5277, 5301. Manati, Léon 6008. Isla de Pinos, Curtiss 382; 
Ekman 12195. 
Jamaica: Liguanea Ridge, Harris 12213. Mavis Bank, Harris 
11449. Newcastle, Harris 11396; Hitchcock 9345. Halls Delight, 
Harris 11293. Ashley Hall, Harris 12736. Lititz, Harris 11655, 
11781, 12698. Ipswich, Harris 12501. Gordon Town, Hart 570; 
Hitchcock 9377. New Forest, Hitchcock 9848. Barican, Hitchcock 
9578 (Amer. Gr. Nat. Herb. 267). 
4Contrib. U. 8. Natl. Herb. 12: 193. 1909. 
