TETRANDRIA, TETRAGYNIA. 97 



T. P. leafy ; leaves sessile, narrow-linear, flat ; spikes pauciflorum. 



capitated, about 4-flowered. — Pursh. 

 P. gramineum, INIich. fl. Am. 1. p. 102. 



Easily distinguished from the other species by its Rin like 



leaves. Looks like thick tut'ts of submersed grass. In a ditch 



<>n the Jersey side ot the Delaware, near the river, and about 



'pposite to Pine-street. Rare. 1 have found it no where else. 



TRI ANDRI A. To genus No. 26, p. 25, add 



the following species. 



No. 2. Xyria brevifolia ; leaves ensiform, short ; 

 calix shorter than the bracteas, slightly notched. 



Grows in similar places with No. 1. In Jersey* in the bog 

 containing Eriophorum angustifolium. Perennial. August- 



N B Panicum pauciflorum, of Elliott, has been twice in- 

 serted, by mistake, viz. p. 49, No. 8, and p. 50, No. 12. 



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