804 Order 156.— GRAMINE.<E. 



glumes linear, pungent ; awn of the fl. 3 to 4 times its length, that of the rudi- 

 ment half as long. — If Sandy fields, N. J. to Ga. and La. 

 2 G. brevifdlium Trin. Culm slender, decumbent below, ascending 8 to 16' ; 

 internodes short (1 '), sheaths about as long, smooth ; lvs. linear-lanceolate, 1 to 

 2', very acute ; spikes almost hair-like, somewhat corymbed, flowering only above 

 the middle; glumes subulate ; awn of the flower as long as the pale, that of the r«- 

 dinient wanting. — 2£ Md. to La. (Hale). 



55. MANISITRUS, L. Lizzard-tail Grass. (Gr. jiavic, lizard, ovpd, 

 tail.) Spkl. in pairs, 1-flowered, the lower £ , upper abortive ; £ gl. 2, 

 the lower roundish, saccate-concave, coriaceous, larger than the flattish, 

 membranous upper gl. ; pales 2, much smaller than the glumes, thinly 

 membranous ; stam. 3 ; styles 2 ; abortive spkl. of merely 2 empty, 

 subequal, subcoriaceous glumes. — (T) 



M. granulans Swtz. Culm 2f or more, erect, branching, with hairy sheaths; 

 leaves flat, 1 to 4' in length; spikes solitary, on short, lateral branches, partly 

 involved in a spath-form leaf, jointed, unilateral, \ to 1' long, colored ; $ fls. 

 globular, tho gl. warty-tesselated. — About Charleston, S. C. (Bachmau !). § E. 

 Ind. 



56. CYN'ODON, Rich. Bermuda Grass. (Gr. nvov, a dog, 65og, a 

 tooth ; alluding to the singular one-sided spikelets.) Spikes digitate or 

 fasciculate ; spikes unilateral, in a single row, 1-flowercd, with a rudu 

 ment, glumes membranaceous, shorter than the flowers, persistent ; # 

 upper palea bifid-toothed ; rudiment minute, pedicellate, in a groove of 

 the upper palea ; 6cales truncate. 



C. Dactylon Pers. Culm creeping extensively ; stolonil'erous at base, 6' to 

 2f long ; lvs. hairy on tho margin and towards the base, narrow-linear ; sheaths 

 hairy; spikes 4 — 5, digitate, spreading, 2 — 3' long, 1'' wide, serrated with the. 

 uneven spikelets ; glumes scabrous on the keel, lanceolate, acute ; pakfe subequal, 

 the lower broader, enfolding the upper. — U A vigorous creeper, in sands and hard 

 soils, Penn. to the Gulf. 



57. EITSTACHYS, Desv. Sea-side Finger-grass. (Gr. ev, well, 

 ardxvc; , a row.) Spikes digitate ; spkl. sessile on one side of the rachis, 

 2-flowered ; upper fl. sterile ; upper gl. larger, short-awned at tbe 2- 

 lobed apex ; lower pale thin, keeled, mucronate below the tip. — 2£ Culm 

 creeping, compressed. Lvs. flat. 



B. petraea Desv. Diffusely branched ; rooting at tho joints ; lvs. linear, ob- 

 tuse, rough-edged, 2 — 4' ; sheatli3 compressed, keeled, serrulate on the keel ; 

 longer than the joints ; spikes strict, erect, fascicled, 4 to 6 ; lower § pale coria- 

 ceous, brown, silky-ciliate on tho keel below and margins above, the raidvein 

 extended into a short subterminal awn. — Brackish soils, S. Car., Ga. (Bachman). 

 Jn.— Aug. (Chloris, Ell.) 



58. ELEUSFNE. (From fflcusis, where Ceres, the goddess of har- 

 vests, was worshipped.) Spikes digitate, unilateral; spikelets 5 — V- 

 flowercd ; glumes obtuse, unequal, lower one smaller ; palese unequal, 

 upper one bifid toothed ; scale truncate, fimbriate ; caryopsis triangu- 

 lar, ovate, enclosed in a separate membrane or perigynium. 



E. Indica L. Culm oblique, compressed, procumbent and branching at base, 12 — 

 1 6' long ; lvs. linear, somewhat hairy, on smooth, loose sheaths hairy at the throat ; 

 spikes 2 — 4. rarely more or less, linear, straight divaricate, 2 — 4' long; 2" wide ; 

 spikelets closely imbricate, smooth ; upper glume 5-veined ; fr. dark brown. — &, 

 Common about houses, foot-paths, kc. Mid. and W. States. Aug. 



59. DACTYLOCTE v NIUM, Willd. Egyptian Grass. (Gr. daKrvXo^ 

 finger, tcreviov, a 6ma!l comb; sc. spikes digitate, pectinate.) Spikelets 



