CHL(3HIDE.E. 



397 



Prof. Scribner protests against this transfer of Spartina, giving 

 his reasons in Bull. Terr. Club, 10:85 (1883). 



a. Spikes 1-3 cm. long, 25-30, in a dense spike. . . . 

 a. Spikes 2-4 cm. long, 30-50, closely imbricated. . . . 

 a. Spikes 2-7 cm. long, 3-8 in an uninterrupted spike. . . 

 a. Spikes 3-5 cm. long, blades narrow, 10-30 cm. long. . . 

 b. Spikes l-S, slightly imbricated, glumes hispid-serru- 

 late ... 



b. Spikes 4-10, slightly imbricated, glumes ciliate-hispid. 

 a. Spikes 5-10 cm. long, 5-20 in a loose raceme, blades ilO- 



1 





 5 



(b) 



3 

 4 



100 cm. long. 



a. Spikes 5-10 cm. long, 20-50 in a close raceme, var. of . 2 



1. S. densiflora Brongn. Duperrey, Itin. Bot. 14. .V. Goiiini 

 Fourn. Ilemsl. Biol. Centr. Am. Bot. 3: 50!) (18S0). 



A glabrous perennial; culms nearly solid, i)0 em. high. Sterile 

 shoots numerous, blades rigid, involute, pungent-pointed, 30-45 

 cm. long, 1-1.5 mm. diam.; leaves of the culm 3; ligule a mere 

 ring; the u})per blade 3-6 cm. long. Spikes 1-3 cm. long; 25-30 

 in a close sjiikelike raceme. Spikelets linear, hispid on the keels, 

 first glume linear, 1-nerved, 3.5 mm. long, second linear-lanceolate 

 wlien spread, 1-nerved, about 5 mm. long, mucronate; fit *id glume 

 linear, obtuse or emarginate, 1- 

 nerved, 5.5 mm. long; palea a little 

 longer than its glume. 



Mexico (San Luis Potosi), Prin- 

 gle 37G0. 



Alkaline meadows. 



2. S. cynosuroides (L.) Willd 

 Enum. 80 (1809). Dactylis cyno- 

 suroides L. Sp. PI. 71 (1753). 



Fig. 70. — Spartina cynonuroide.s. 

 I RIvSII-WATER COKD-GUASS. A, spikelct ; a, floret. (Ricl.anl- 



Culms rather slender, 60-180 «»») 

 cm. high. Leaf-blades rough on the margins, involute, tlie apex 

 long pointed, 60-120 cm. long, T-15 mm. wide. Spikes 5-20, in a 

 loose raceme, rachis hispid on 2 angles. Spikelets elliptical-lanceo- 

 late, hispid on the keels, first glume elliptical-lanceolate, 1-nerved, 



