58 THE GRASSES OF MAINE. 



better. An analysis of this grass, "in bud," was made by Prof. F. 

 H. Storer, and gave ash G.G3, fat 2. 1 J { J, nitrogen-free extract 42.93, 

 crude fiber 3G.39, albuminoids 11.0G. 



Genus Panicum, Linneus. 

 Pan-i-cum. 



Said to be derived from the Latin, panis, bread; the grain of 

 some species being used for food. 



The flowers are arranged in panicles in some species and in spikes 

 in others. Spikelets two-flowered, naked, the flowers with or with- 

 out awns ; the lower one staminate or neutral, the upper one per- 

 fect. 



Nine species of this genus have been reported in this State thus 

 far, and these may be distinguished by the following table : 



{Flowers wit] 

 Flowers witl 



i i Un v i .-> v> mi awns P. crus-galli. 



ithout awns . .* 2 



o | Spikelets crowded on one-sided spikes P. glabrum. 



\ Spikelets scattered in panicles 3 



-o ( Panicle 

 6 \ Panicle 



elongated, wand-like or pyramidal... 4 



short or small, loosely spreading 5 



i Sheaths, and usually the leaves, very hairy . . . . P. ajpillare. 

 Sheaths and leaves not hairy. P. virgatum. 



, Leaves wide, with from nine to fifteen nerves G 



o 



: 



6 



Leaves narrow, with few or indistinct veins 8 



Outside of the sheaths smooth P. latifolium. 



Outside of the sheaths rough with minute bristles 7 



Rase of the leaves heart-shaped and clasping : about an inch 



wide P. clandestinurn . 



] Base of the leaves not heart-shaped and clasping ; about half 

 1^ an inch wide P. xanthophysum. 



q ( Stems short and tufted P. depauperalum. 



\ Stems taller and nearly simple P. dichotichum. 



G8. Panicum glabrum, Gaud. 



Pari-i-cum gla'-brum . 



Common Nome Smooth Crab-Grass. 



Annual. Stems from live to twelve inches long, spreading, pros- 

 trate or sometimes erect. Spikes three or four in number, spread- 



