58 THE GRASSES OF MAINE. 



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

 H. Storer, and gave ash 6.63, fat 2.99, nitrogen-free extract 42.93, 

 crude fiber 36.39, albuminoids 11.06. 



Genus PANICUM, Linneus. 

 Pan-i-cum. 



Said to be derived from the Latin, paw's, 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. 4 



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

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



.. ( Flowers with awns P. crus-galli. 



\ Flowers without awns 2 



2 f Spikelets crowded on one-sided spikes P. glubrum. 



\ Spikelets scattered in panicles 3 



o | Panicle elongated, wand-like or pyramidal 4 



{ Panicle short or small, loosely spreading 5 



. | Sheaths, and usually the leaves, very hairy . . ..P. capillare. 

 \ Sheaths and leaves not hairy P. virgatum. 



{Leaves wide, with from nine to fifi 

 Leaves narrow, with few or indisti 



fifteen nerves 6 



indistinct veins 8 



g f Outside of the sheaths smooth P. latifolium. 



\ Outside of the sheaths rough with minute bristles 7 



(Base of the leaves heart-shaped and clasping ; about an inch 

 wide P. clanclestinum. 

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

 an inch wide P. xanthophysum. 



g ( Stems short and tufted P. depauperatum. 



( Stems taller and nearly simple P. dichotichum. 



68. PANICUM GLABRUM, Gaud. 



Pan'-i-cum gla'-brum. 

 Common Name Smooth Crab-Grass. 



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

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



