34 



rachis angular, striate, sparingly villous; branches erect-spreading, the lower 

 ones 1.5 to 3 cm. long, loosely flowered; seta? solitary, 1.5 to 3 cm. long, green, 

 somewhat flexuous, antrorsely scabrous. Spikelets short pedicellate, narrowly 

 ovate, acute, 3 mm. long; first glume cordate, acute, inclosing the base of the 

 spikelet; second glume oval, acute, short apiculate, 5 or rarely 7 nerved, three- 

 fourths the spikelet in length; third glume 5-nerved, equaling the spikelet, 

 slightly inclosing the flowering glume by its infolded edges, subtending a lanceo- 

 late, hyaline palea; flowering glume narrowly ovate, acute, striate, finely trans- 

 versely undulate wrinkled, 

 its palea similar in markings 

 and texture, slightly convex 

 at the base. 

 Shell islands and keys, some- 

 times in old fields. Florida, 

 Texas. July-October. 

 Specimens examined. — Florida : 

 Mouth of the St. Johns Eiver, 

 3617 Curtiss; Key Largo, 

 5502 Curtiss 1895; Caloosa 

 Eiver, 41 Garber 1878; 

 Orange Co., 29 Baker 1897; 

 Weston Key, 263 Simpson 

 1891; Grasmere, 1150 Combs 

 and Rolfs 1898; Cedar Key, 

 969 Combs 1898; Homosassa, 

 977 Combs 1898 ; Crystal, 979 J 

 Combs 1898. Texas: Rio 

 Grande, Wright 1848. 



24. CH^TOCHLOA VILL.O- 

 SISSIMA sp. nov. (Fig. 

 19.) 

 An erect, somewhat csespitose 

 more or less densely villous- 

 pubescent perennial, 4 to 10 

 dm. high, with broad-linear 

 or linear-lanceolate leaves 

 and loose, lanceolate pani- 

 cles about 2 dm. in length. 

 Culms branching and usually 

 somewhat geniculate at the 

 base, compressed, striate, 

 glabrous; nodes smooth or 

 sparingly bearded with ap- 

 pressed hairs; sheaths loose, 

 striate, compressed, equaling 

 or exceeding the internodes, scabrous above, especially on the keel, nearly smooth 

 below, more or less densely villous-pubescent above, bearded at the apex and 

 ciliate-i^ubescent on the margins; ligule brown, about 1 mm. long, densely ciliate- 

 f ringed with long white hairs; leaf-blades broad-linear, 1.5 to 3 dm. long, 6 to 8 

 mm. wide, tapering toward the base, long-acuminate at the apex, more or less 

 densely villous-pubescent on both sides, with spreading white hairs, serrulate- 

 scabrous on the cartilaginous margins, midvein prominent on the lower surface 

 for its whole length. Panicle about 2 dm. long, 2 to 3 cm. in diameter below, 

 tapering to the apex, loose; rachis angular striate, scabrous, villous; branches 



Fig. 19. — OhcBtochloavillosisHma: a, spikelet showing the aeta 

 b, c, views of the spikelet ; d, flowering glume, dorsal view. 



