414 MONOCOTYLEDONOUS PLANTS. 



C. dactylon Pcrs. : culm creeping; spikes digitate, (4 5,) spread- 

 ing ; keel of the glume scabrous ; leaves hairy on the margin and to- 

 wards the base ; sheaths hairy. Digitaria dactylon Ell. Muhl. 



HAB. Low grounds. Penn. to Car. Aug. it. Culm prostrate. 

 a foot or more long. Leares narrow, somewhat distichous. 



Bermuda 



45. ATHEROPOGON. Muhl 



Spikes in a unilateral raceme. Glume 2-valved, membran- 

 ous, 2-nWered ; lower one setiform. PERFECT FL. Palea 

 2 ; lower one 3-toothed, or 3-bristled ; upper bifid. ABOR- 

 TIVE FL. Palea 2 3-bristled, pedicellate. 



Triandria. Digynia. 



A. apludoidcs Muhl. : spike.? racemose, distant, pendulous ; perfect 

 floret with the lower palea tricuspidate ; lateral bristles in the abortive 

 floret half the length of the terminal one. Chloris cvrtipcndula Mich. 

 HAB. Rocky hills. N. J. and Penu. W. to Rocky Mountan>. 

 Aug. ZZ. Culm 18 inches high, geniculate at base, assur- 

 gent. Spikes very numerous, secund. Well figured by Dr. 

 Darlington in his Flora Cestrica. 



46. ELEUSINE. Gart. TU ^* 



Glume 5 7-flowered ; valves obtuse, unequal. Paha ob- 

 tuse, membranous, upper one bifid-toothed. Scales truncate, 

 fimbriate. Seed enclosed in a separate membrane, broad- 

 ly and deeply furrowed. Spikes digitate, 1-sided. 



Triandria. Digynia. 



E. indica Lam.: spikes straight, erect, in pairs orquaternate ; racliis 

 linear ; spikelets lanceolate, about 5-flowered ; culm compressed, de- 

 clined. Cynosurus indica Linn. 



HAB. Cultivated grounds. N. Y. to Car. July Nov. .~- 

 Culm 12 feet high, decumbent. Spikes mostly in pairs. 



Hire Grass. 



Div. VI. CEREALIJE. Inflorescence spiked. Spikelets soli- 

 tary, in pairs, or several together, 1- or many-flowered. 

 Glumes opposite, equal. Lower palea beardtd or beardless, 

 vpper toith two keels. 



47. HORDEUM, Linn. 



Spikelets 3 at each joint of the rachis, 1-flowered, all per- 

 fect, or the lateral ones abortive. Glumes 2, subulate. Palea; 

 2, the lower bearded. Scales 2. Stigmas feathery. Seed 

 coated. Habit similar to Elymus. ^Triandria. Digynia. 



