Andropogon. GRAMINEiE. 479 



Perennial. Culm about 3 feet high, compressed below, with remote short branches above. 

 Leaves a foot or more in length ; the lowest ones hairy on the margin and upper surface. 

 Fascicles of spikes partly concealed in compressed acuminate bract-like sheaths : rachis 

 filiform, clothed with long silky hairs. Lower flower a mere awn-like plumose pedicel, 

 longer than the perfect one. Glumes of the perfect flower linear-lanceolate, equal. Awn of 

 the lower palea very slender, more than half an inch in length. Anther linear, yellow. 

 Caryopsis oblong. 



Sterile soils and exsiccated swamps : common. Fl. September. 



^ 6. Andropogon macrorus, Michx. Clvster-jlowered Beard-grass. 



Spikes in pairs ; the peduncles in dense fastigiate panicles, lateral and terminal ; lower 

 flower a mere rudiment, without valves ; perfect flower monandrous, the awn straight. — 

 Michx. fl.l. p.75; Muhl. gram. p. 278 ; Ell. sk. 1. ^. 150 ; Torr. Jl. I. p. 156; Beck, 

 bot. p. 418 ; Darlingt. fl. Cest. p. 88 ; Kunth, enum. 1. p. 495. Cinna glomerata, Walt. fl. 

 Car. p. 59. 



Perennial. Culm about 3 feet high, much branched towards the top ; the nodes smooth. 

 Leaves roughish : lower ones long ; the upper short and lanceolate : sheaths loose ; the upper 

 ones often hairy. Spikes about an inch long, very numerous, forming dense leafy clusters, 

 and partly concealed in the compressed boat-like sheaths. Rachis clothed with long white 

 hairs. Flowers similar to those of the preceding species. 



Low grounds and swamps, particularly near the salt water : not found in the interior of the 

 State. Fl. September. Very nearly allied to the preceding species ; differing, chiefly, in 

 the very dense fastigiate clusters of spikes. 



