620 GHAMiNE^. (gbass family). 



(Trachynotia polystachya, Michx. Dactylis cynosuroidgs, L.! in part, excl. 

 var. ) — Salt or brackish marshes, within tide- water, especially southward. 



3. S. JTineea, Willd. {Rdsh Salt-Grass.) Culms low (1° - 2° high) and 

 slender; leaves narrow and rush-like, strongly involute, very smooth; spikes 1 -5, on 

 very short peduncles ; the rhschis smooth ; glumes acute, the lower scarcely half 

 the length of the upper, not half the length of the lower palet. (Dactylis ya.- 

 tens, Ait.) — Siilt marches and sea-hQ^ches. Aug. (Eu.) 



* * Spikelets looseli/ imbricated, or somewhat remote and alternate, the keels only slightly 

 hairy or roughish under a lens: spikes sessile and erect, soft: leaves, rhachis, ifc. 

 very smooth f culm rather succulent, 



4. S. stricta. Roth. (Salt Maksh-Gkass.) Culm 1°^4° high, le^fy 

 to the top ; leaves soon convolute, narrow ; spikes few (2-4), the rhachis slightly 

 projecting at the summit beyond the crowded or imbricated spikelets : glqmes 

 acute, very unequal, the larger 1-nervcd, a little longer than the palets. — Sjilt 

 marshes, Pennsylvania, &.c. {iluhl.) — Odor strong and rancid. (Eu.) 



Var. glkbra. (S. glabra, MiiW., partly.) Culm and leaves longer ; spikes 

 5-12 (2'-3' long) ; spikelets imbricate-crowded. —r Common on the coast. 



Var. alternifldra. (S. alterniflora, Loisel. Dactylis cynosuroides, var., 

 L.) Spikes more slender (3' -5' long), and the spikelets remotish, barely over- 

 lapping, the rhachis continued into a more conspicuous bract-like appendage : 

 larger glume indistinctly 5-nerved (not so evidently as in the European and 

 Tropical American plant) : otherwise as in the preceding form, into which it 

 passes. — Common with the last : also Onondaga Jjake, J. A. Paine. 



18. CTilNIUM, Panzer, Toothache-Grass. (PI. 9.) 



Spikelets densely imbricated in two rows on one side of the flat curved rhachis 

 of the solitary terminal spike. Glumes persistent : the lower one (interior) much 

 smaller ; the other concave below, bearing a stout recurved awn, like a horn, on 

 the middle of the back. Flowers 4 - 6, all but one neutral ; the one or two lower 

 consisting of empty awncd palets : the one or two uppermost of empty awnless 

 palets : the perfect flower intermediate in position ; its palets membranacepus, 

 the lower awned or mucronate below the apex and densely ciliate towards the 

 base, 3-nerved. Squamulas 2. Stamens 3. Stigmas plumose. (Name KreWoi/, 

 a small comb, from the pectinate appearance of the spike.) 



1. G. American um, Spreng. Culm (3° -4° high from a perennial root) 

 simple, pubescent or roughish ; larger glume warty-glandular outside and con- 

 spicuously awned. ( Monocera aromatica. Ell. ) — Wet pine barrens, S. Virginia 

 and southward. — Taste very pungent 



19. BOTJTELOITA, Lagasca (1305). MnsKfx-GKAss. (PI. 9.) 



Spikelets crowded and closely sessile in 2 rows on one side of a flattened 

 rhachis, comprising one perfect flower below and one or more sterile (mostly 

 neutral) or rudimentary flowers. Glumes convex-keeled, the lower one shorter. 

 Perfect flower with the 3-ncrved lower palet 3-toothed or cleft at the apex, the 

 2-nerved upper palet 2-toothed ; the teeth, at least of the former, pointed or sub- 



