447 
The proportion of water in green grass of this species as reported by 
Prof. Emmons is...^ 58.3C9’ 
Pry matter. 41,631 
Ash. 2,198 
In dried grass the proportions are, of ash. 5.279 
Nutritive mailer. 9-1,721 
GENUS 27. POA. Linnaeus. 
( Greek, poa, grass.,) 
Spikelets ovate-oblong compressed, few-flowered, pedicellate, in diffuse 
panicles; glumes 2, shorter than the palea, the lower smaller; lower palea 
compressed keeled, pointless five-nerved, commonly clothed at base with 
soft matted or cob-web-like hairs; upper palea rather smaller, two¬ 
toothed; stamens 2 or 3; stigmas simply plumose, usually flat and soft. 
63. Poa Annua. Linnaeus. 
Culms spreading, flatfish; leaves short; panicle often one-sided, aft 
length spreading; spikelets crowded, very short-pedicelled, three to seven- 
flowered, ovate-oblong; flowers minutely downy above; root fibrous. 
Annual; flowers from April to November. Culms 3 to 8 inches long. 
Cultivated grounds. Sparingly introduced in the West. Wisconsin, 
and about Lake Superior; Cleveland, Ohio. A native also of Europe. 
A small, delicate and tender grass of spontaneous growth everywhere, 
which is found to be excellent food for cows, affording milk and butter 
of the best quality. It is, however, never cultivated for the purposes of 
pasturage, other grasses of greater value being much more readily cul¬ 
tivated, and are more permanent. It makes a very beautiful, soft turf. 
64. Poa Pungens. Nuttall. 
Syn. —P. flexuosa, Mukl. P. cuspidata, Barton. 
Culm flattened, stoloniferous from the base; root-leaves long and linear, 
those of the culm 2 or 3, lanceolate, very short, all abruptly sharp- 
pointed ; branches of the spreading panicle, mostly in pairs; spikelets three 
to five flowered; glumes pointed, rough on the keel; lower palea oblong- 
lanceolate, rather obtuse, hairy along the keel below. Perennial; flowers 
in April and May. Culms 1 to 2 feet high. Illinois and Ohio. 
65 . Poa Debilis. Torrey. 
Panicle loose, few flowered, a little spreading, the branches few, in 
pairs, or the lowest in threes, a little rough, flexuous; spikelets ovate, 
obtuse, two to four-flowered ; glumes acutish smooth ; flowers broadly 
+ 
