ORDER 155. GRAMINE^E. 



407 



4 L. Domingensis Link. Culm? simple, slender; Ivs. linear-filiform; spikes few 

 (612), distant ; spikelets nearly as in No. 3. S. Fla. (Chapman). Oct. 



59. GYMNOP.OGON, Bcauv. Spikes setaceous, corymbously pani- 

 cled. Spkl. remote, 1-flwd., with an awn-like rudi- 

 ment. Gl. 2, keeled, lance-linear. Lower pale with 



a straight awn near the tip. if Low, reed-like. 



1 G. race in 6*11 m B. (a) Culm ascending, Ij 2f; Ivs. 



lanceolate 1'rom a broad base, short ; spikes erect but soon 

 spreading, thread- form, 5 8', floriferous from base ; gl. () 

 pungent ; fertile flower and abortive rndiment (c), both 

 long-awncd. Sands, N. J., and S. 



2 Cr. brevifajium Trin. (d) Culm 816'; Ivs. 12'; 



spikes bristle-form, 4 6', flower-bearing only above the 

 middle ; fertile fl. awued (e), rudiment not. Md., and S. 



60. MANISURUS, L. LIZARD-TAIL G. Spikes 

 terminal ana lateral, their short stalks involved in 

 sheaths. Spkl. in pairs, 1-flwd., the lower ? , the 



upper neutral, consisting merely of 2 empty subequal glumes. 9 Glumes 

 coriaceous, the lower rounded, concave. Pales hyaline, thin. 



M. graiiulAris Swtz. Culm 2 3f, branching; sheaths hairy; leaves flat; spikes 

 i 1', colored ; spkl. minute, the perfect globular, its gl. tessellated. Waysides, S. 



61. CYNODON, Rich. BERMUDA G. Sp. digitate, one-sided. Spkl. 

 1-flwd. (c), with a rudiment. Gl. 2 (d), persistent. 



Pales 2, membranous, the lower keeled. Rudiment 

 an awn-like pedicel. 



C. dikctyloii Pers. (a) Diffusely creeping, sending up 

 short branches ; narrow Ivs. and sheaths hairy ; spikes (b) 

 4 or 5, 23' long, spreading, li Waste ground?. Ever- 

 green. Pa., and S. 



62. CHLORIS, Swtz. (Eustachys, Desv.) Spikes 

 digitate-fasciculate, rarely few. Spkl. sessile along 

 one side of the rachis, 2-8-flwd., the lower 1 or 2 fls. 



5 , the rest neutral or $ . Gl. 2, persistent, acute or 

 short-awned. Lower pale keeled, mucronate or awned below the tip. 

 Culms flattened, often branched. Leaves obtuse. 



1 C. petrsea (Thunb.) Culms 1 2f ; Ivs. linear, 24', flat, on carinate sheaths ; spikes 



3 15, straight, erect ; spkl. 2-flwd., brown, ciliate, bearded at base, u Brackish. S. 



2 C. glauca (Chapm.) Glaucous, stout, 3 5f; leaves 1824' by}'; spikes about 20; 



spkl. roundish, upper flower obovate ; pales brown. (D Marshes, Fla. Aug. + 



3 C. Floridana (Chapm.) Slender, 2f; Ivs. glaucous, 24'; spikes 1 or 2 : spkl. 3- 



flwd., light brown, middle flower $ , upper neutral, both smooth. Barrens, Fla., T1. + 



4 . UADIATA. From E. Ind. Cultivated for ornament. Culms leafy at base, scape- 



like, bearing at top numerous long, slender, radiating spikes ; spikelets 2-flowered, 

 with 2 long awns, yie fertile flower bearde>l at base, the sterile club-shaped. 



63. ELEUSINE, Gaert. CRAB G. YARD G. Spikes digitate, uni- 

 lateral. Spikelet 5-7-flwd., sessile. Gl. obtuse, the lower smaller. Pales 



