GRA MINIM:. 665 



DANTHONIA, DC. 



D. compressa, Austin. Like l>. spicata, but taller; leaves longer; 

 panicle larger and more open; teeth of the lower palea Longer and inure 

 Blender. — Summit of Roan Mountain, North Carolina (Chickering), and 

 northward. 



HOLCUS, L. Soft Grass. 



Spikelets 2-flowered, the flowers short-pcdicelled, the lower one perfect 

 and unawned, the upper one triandroua and awned. Glumes 2, thin, keeled, 



enclosing the flowers. Palea: 2, thin, equal, the lower one keeled. Grain 



flee. 



II. lanatus, L. Soft-downy, erect (2 high) ; panicle oblong (2'-4' 

 long) ; awns recurved. — Low ground, North Carolina. Introduced. 



EEIMAEIA, Fluegge. 



Like Paspalum, but the spikelets g] tuneless, and the sterile flower of one 

 palea. — Culms creeping, spikelets appressed to the fiexuous rachis in two 

 rows. 



R. oligOStachya, Munro. Culms branching, leaves linear, attenuate, 

 the sheaths mostly longer than the internodes ; spikes 3-4, filiform, at length 

 reflexed; spikelets sunk in the flexures of the rachis. — Banks of the St. 

 John's, East Florida (Curtiss). 



PA SP ALUM, L. 



P. monostachyum, Vasey (hied.). Very smooth throughout ; culm 

 strictly erect (3° high), simple ; leaves erect, very narrow, striate-nerved, the 

 lower ones l°-li° long, the uppermost one short, pointing the elongated 

 sheath; spike solitary, long-peduncled, nearly straight, G'-7' long; spike- 

 lets in two rows beneath the filiform rachis, oblong-oval, obtuse (1A" long) ; 

 lower palea slightly keeled ; perfect flower smooth. — South Florida ( Garh r). 



P. Reimarioides, n. sp. Culms long, ascending from a creeping base, 

 branching; leaves narrow-linear, attenuate, the sheaths as long as the inter- 

 nodes ; spikes mostly 3, subterminal (2' long) ; spikelets in 2 rows under the 

 straight triangular rachis, ovate-lanceolate, acute, the glume and undulate 

 sterile palea equal, thin, 3-nerved, longer than the acute perfect flower. — 

 Brackish marshes along the coast, West Florida. 



P. obtusifolium, Raddi. Creeping ; flowering branches (1° high) single- 

 jointed; leaves (V -2' long) broadly linear, obtuse ; peduncles 2-4 from the 

 long sheath ; spikes 2-4, filiform ; spikelets in 2 rows, ovate, acute ; sparse. 

 hairy, 3-nerved. (P. barbatum, Sckultes.) — Damp waste ground, Georgia 

 and Florida. 



P. Bosoianum, Fleegge. Perennial; culms simple (2° high); leaves 

 long, linear ; spikes several, distant, spreading (2' long) ; spikelets in '■) rows 

 under the narrow flexuous rachis ; upper glume more or less rugose within 

 the pale thickened margins. (P. plicatulum, Michx.) — South Carolina, and 

 westward. 



5G* 



