552 GB AMINES. (GRASS FAMILY.) 



tens, Ait.) — Salt marshes, and sandy sea-beaches, common. August. (Also 

 in one locality in S. of Eu.) 



# # Spikelets loosely imbricated, or somewhat remote and alternate, the heels slightly 

 hairy or row/lush under a lens: spikes sessile and erect, soft; leaves, rhachis, Src. 

 very smooth : culm, frc. rather succulent. 



4. S. stricta, Roth. (Salt Marsh-Grass.) Culm l°-3° high, leafy 

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

 projecting at the summit beyond the crowded or imbricated spikelets ; glumes 

 acute, very unequal, the larger 1 -nerved, a little longer than the palere. — Salt 

 marshes, Pennsylvania, &c. (Muhl.) (Eu.) 



Var. glabra, Muhl. (S. glabra, Muhl., partly.) Culm and leaves mostly 

 longer; spikes 5-12 (2' -3' long), the spikelets imbricate-crowded. — Common 

 on the coast. 



Var. alternifldra. (S. altemiflora, 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 Eu. and Trop. 

 Amer. plant) : otherwise as in the preceding form, into which it passes. — Com- 

 mon with the last. — Odor strong and rancid. 



17. CTENIUM, Panzer. Toothache-Grass. 



Spikelets densely imbricated in two rows on one side of a flat arcuate-curved 

 rhachis, forming a 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 awned palea?, the one or two uppermost 

 of empty awnless palea; : the perfect flower intermediate in position ; its palese 

 membranaceous, the lower awned or mucronate below the apex and densely 

 ciliate towards the base, 3-nerved. Squamulae 2. Stamens 3. Stigmas plu- 

 mose. (Name Kreviov, a small comb, from the pectinate appearance of the spike.) 



1. C. Americanism, Spreng. Culm (3° -4° high) simple, pubescent 

 or roughish ; larger glume warty-glandular outside and conspicuously awned. 

 1J. (Monocera aromatica, Ell.) — Wet pine barrens, S. Virginia and southward. 

 — Taste very pungent. 



18. BOCTELOlfA, Lagasca (1805). McsEiT- Grass. 



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 concave-keeled, the lower one shorter. 

 Perfect flower with the 3-nerved lower palea 3-toothed or cleft at the apex, the 

 2-nervcd upper palea 2-toothed, the teeth, at least of the former, pointed or subu- 

 late-awned. Stamens 3 : anthers orange-colored or red. Rudimentary flowers 

 mostly 1 - 3-awned. Spikes solitary, racemed, or spiked ; the rhachis somewhat 

 extended beyond the spikelets. (Named for Claudius Boutelou, a Spanish writer 

 upon floriculture and agriculture.) 



