. Bulletin. Agriculture. 24 THE SEEDS OF THE BLUEGRASSES. Poa compressa L. CANADA BLUEGRASS, FLAT-STEMMED BLUEGRASS. Spikelets 3-9 flowered; florets 2-2J mm. long, oblong-obovate or the terminal one lanceolate as viewed from the back, somewhat narrowly oblong as viewed from the side, obtuse or the terminal one acute, smooth between the veins, straw colored or light brown; glume somewhat arched, especially at the base, and strongly keeled at the back, the keel often less pronounced at the apex than at the base; margins infolded from the base for about three-fourths the length of the floret in t
. Bulletin. Agriculture. 24 THE SEEDS OF THE BLUEGRASSES. Poa compressa L. CANADA BLUEGRASS, FLAT-STEMMED BLUEGRASS. Spikelets 3-9 flowered; florets 2-2J mm. long, oblong-obovate or the terminal one lanceolate as viewed from the back, somewhat narrowly oblong as viewed from the side, obtuse or the terminal one acute, smooth between the veins, straw colored or light brown; glume somewhat arched, especially at the base, and strongly keeled at the back, the keel often less pronounced at the apex than at the base; margins infolded from the base for about three-fourths the length of the floret in the lower florets and nearly to the apex in the upper ones, hyaline-edged above the middle, often broadly so at the apex, which is more or less flaring in the lower florets, the thai apex often torn and jagged in commercial seed; intermediate veins very indis- tinct or not evident, glabrous; keel and marginal veins silky pubescent below the mid- dle; basal web present, slight; palea nearly or quite equaling the glume, finely hispid- ciliate on the keels, which are usually more or less exposed above the middle, sometimes from the base; rachilla segment glabrous, varying from about one-fifth the length of the glume in the lower florets to one- half its length in the terminal one; aborted floret of the sterile rachilla segment min- ute; grain 1-1J mm. long, keeled and slightly grooved, semitranslucent. (Fie. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Bureau of Plant Industry. Washington : G. P. O.
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