THE IDENTIFICATION OF WALTER'S GRASSES. 



45 





chya Willd. Walter inserts "calycibus unifloris" in 

 place of " numerosis M in Linnaeus' description. 



maritima 2. spicis approximatis secundis glabris, calyci- 



bus unifloris. 



Probably Spartina stricta Roth (8. glabra Muhl.) as 

 indicated by Muhlenberg. 



37. Agrostis. Cal. 2-valvis, uniflorus, corolla paulo minor. 



Stigmata 



C5 



w 



indica 1. 



panicula contracta mutica, racemis later alibus 

 alternis erectis. 

 virginica 2. panicula contracta conferta mutica, foliis in- 



voluto-subulatis rigidis ext&ntibus >panicidis 

 saepe fuligineis. 



These two species are doubtless correctly identified 

 with the Linnaean species as indicated by Elliott. In 

 both cases the descriptions are somewhat changed from 

 those of Linnaeus. These species are now included in 

 Sporobolus. 



38. Stipa. Cal. 2-valvis, uniflorus. Cor. valvula exteri- 



ore arista terminali, basi articulata. 



No specimen of Stipa in the herbarium. 



avenacea? aristis nudis longis, calycibus semen aequanti- 



bus, pedunculis longis sparsis unifloris, 



1. 



seminibus basi pungentibus. 



This is referred by Michaux to his 8. barbata, by 

 Pursh to S. bicolor Vahl, and by Elliott to 8. avenacea 

 L., which latter identification is probably correct. Lin- 

 naeus' description is somewhat altered. 





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