57 
CINNA Linn. 
Spikelets 1-flowered, much flattened, in an open, spreading pani- 
cle; outer glumes lanceolate, acute, strongly keeled, hispid on the keel, 
the upper somewhat longer than the lower; flowering glume manifestly 
stalked above the outer glumes, about the same length, 3-nerved, 
short-awned on the back near the apex; palet nearly as long as its 
glume, only 1-nerved (‘probably by the consolidation of 2,” Bentham) 
Stamen 1. A sterile pedicel sometimes present. 
; 
1, Cinna arundinacea Linn, (Gray’s Manual, 6th ed., p. 649.) (Muhlenbergia 
pendula Bong.; Blyttia suaveolens ¥ries.; Cinna latifolia Griseb.) Culms 3 to 6 feet 
high, stout; leaves 4 to 6 lines wide, 1 foot long; ligule elongated, conspicuous; pan- 
icle 6 to 12 inches long, rather dense, spreading in flower, afterward close, lower 
branches 4 or 5 together, about 2 inches long; spikelets 24 to 3 lines long, flattened ; 
empty glumes linear-lanceolate, roughish, acute, mostly 3-nerved, the upper nearly as 
long as the spikelet, the lower rather shorter; flowering glumes oblong-lanceolate, 3- 
nerved, usualy with a minute awn near the apex; palet 1-nerved.—Moist woods 
and swamps, Canada to Texas, and northern Rocky Mountains to Oregon and Wash- 
ington, 
2. C. pendula Trin, (Gray’s Manual, 6th ed., p. 649.) Usually more slender than 
the preceding species, with a looser, drooping panicle, more capillary branches, and 
smaller spikelets (about 2 lines). Same range as the preceding. 
Var. MUTICA. Spikelets less than 2 lines long, flowering glumes awnless—Oregon. 
Var. BOLANDERI. (Cinna Bolanderi Scribn). Tall and stout; leaves broad; panicle 
lax, thin; spikelets 2 to 24 lines long; flowering glumes shorter than the outer ones.— 
California (Dr. Bolander). 
POLYPOGON Desf. 
Panicle dense and spike-like or somewhat branched or lobed ; spike- 
lets 1-flowered, very small, rarely exceeding a line in length. Glumes 
nearly equal, compressed, 1-nerved, and bearing along awn at or below 
the apex; floret much shorter than the glumes, without manifest eal- 
lus, and naked at base; lower palet hyaline, broad, 1-nerved (or ob- 
securely 5-nerved), truncate, toothed, awned at the apex; scales 2, 
falcate, entire, aslong astheovary. Stamens 3. Anthers small, Styles 
short, with long feathery stigmas. 
1, Polypogon Monspeliensis Desf. (ANNUAL BEARD-GRAsS.) (Bot. Cal. 11, p. 
270.) ‘*Culms 5 inches to 2} feet high, procumbent and geniculate at base, 
rarely erect, often branching from the lower nodes; leaves broad, flat, somewhat 
scabrous ; sheaths smooth ; ligule 2 or 3 lines long, obtuse; panicle 2 to 6 inches long, 
cylindrical or somewhat interrupted, yellowish, dense, and soft ; spikelets about a 
line long; glumes notched at the apex and emitting an awn two or three times their 
length; lower paiet with an awn equaling or siightly exceeding the glumes.”—Cali- 
fornia and Arizona to Texas. 
2. P. littoralis Smith. (Bot. Cal. 1m. p. 270.) “Culms from a perennial root, 
forming large tufts, 1 to 2 feet long or more; leaves rather narrow, scabrous on 
both sides; ligule 1 to 3 lines long, acute; panicle narrow, much lobed its whole 
length, and sometimes completely interrapted below, usually purplish ; glumes more 
or less pubescent and distinctly aculeate on the keel, tapering into an awn of about 
their own length; awn of lower palet slightly exserted beyond the glumes.” —Same 
> 
range as the preceding. 
