TETRANDRIA, TETRAGYNIA. 
97 
7. P. leafy ; leaves sessile, narrow-linear, flat ; spikes paueifiorum. 
capitated, about 4»flowered. — Pursh. 
P. gramineum, Mich>fl. Am. 1. p. 102. 
Easily distinguished from the other species by its grass-like 
leaves. Looks like thick tufts of submersed grass. In a ditch 
on the Jersey side of the Delaware, near the river, and about 
opposite to Pine-street. Rare, I have found it no where else. 
TRIANDRIA. To genus No. 26, p. 25, add 
the following species. 
No. 2. Xyris 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 paueifiorum, of Elliott, has been twice in- 
serted, by mistake, viz. p* 49, No. 8, and p, 50, No, 12. 
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