OBAMINEAB 365 



Stamens 3. Scales bifid. Grain lance-oblong, acute at each end. 

 Perennials: culms cespitose, rather stout; the clustered spikelet* 

 pale green. 



l. D. GLOMERATA, L. Rough and glaucous ; panicle distantly 

 branched ; spikelets clustered at the ends of the branches. 

 CLUSTERED DACTYLIS. Orchard-Grass. Rough Cock's-foot Grass. 

 Culms 2 to 3 or 4 feet high. Leaves 6 to 18 inches long; sheaths striate; ligule 

 elongated, lacerate. Panicle racemose at summit, rather one-sided; branches 3 to 

 5, solitary, erect, subdivided toward the extremity ; spikelets about 4-flowered. 

 Hob. Fields, orchards, &c. Nat. of Europe. FL May. Fr. June. 



Obs. Cultivated to some extent, and naturalized among us. It is 

 more valued for pasture, than for hay. It is of quick growth, and 

 is speedily reproduced after being cut, or eaten down by Stock : so 

 much so, that we may almost literally apply to it the lines of 

 VIRGIL 



" Et quantum longis carpent armenta diebus 

 Exigua tantum gelidus ros nocte reponet." Georg. 2. 



or, as SOTHEBY renders them 



" Cool dews restore beneath night's transient hours, 

 All that the herd each live-long days devours." 



c. Lower palea mostly pointless. J Glumes very dissimilar. 

 483. REBOITL.EA, Kunth. 



[Named from Eugene de Rebmtl^yo. Italian Botanist.] 



Spikelets usually 2-flowered, with an abortive pedicel-like rudiment 

 of a third, in a contracted slender panicle. Glumes nearly equal in 

 length, rather shorter than the florets, the lower one narrowly 

 linear, 1-nerved and keeled, the upper one obovate, 3-nerved. 

 Lower palea oblong, obtuse, chartaceous, the upper one very thin 

 and hyaline. Stamens 3. Grain linear-oblong, not grooved. Per- 

 ennials : culms slender ; leaves and sheaths more or less pubescent. 



1. R. Peiiiisy Ivaiiica, A. Gray. Panicle long and slender, 

 rather loose ; spikelets a little compressed, shining ; upper glume 

 barely obtuse. 



Koeleria Pennsylvanica. DC. $ Fl. Cestr. ed. 2. p. 65. 

 PENNSYLVANIAN REBOULEA. 



Oulms 2 to 3 feet high. Leaves 2 to 6 inches long ; sheathe sometimes smoothish . 

 Panicle 4 to 6 or 8 inches long, very slender; spikelets not crowded, pale yollowieli- 

 green. 

 Sab. Moist woodlands, and low grounds; frequent. Fl. May. Fr. July. 



2. R. obtusata, A. Gray. Panicle oblong, rather dense, some- 

 what interrupted ; upper glume rounded-truncate, roughish. 

 Koeleria truncata. Torrey. $ Fl. Cestr. ed. 2. p. 66. 



BLUNTED REBOULEA. 



Oulms about 2 feet high. Leaves 3 to 8 Inches long; sheaths striate, usually 

 softly pilose. Panicle 3 to 4 or 5 inches long, contracted, the branches short and 

 nearly erect; spikelets crowded, glaucous or ash-colored, appearing somewhat 

 acuminate, by reason of the paleae projecting beyond the glumes. 

 Bab. Fields and open woodlands : not very common. Fl. June. Fr. July. 



