60 Professor Douglass und Dr. Torrey 
Viola pubescens Ait. 
pennsylvanica, Mx. 
Claytonia Virginica ZL. Black Rock, May 2d. 
Comandra umbellata Nutt. ae 
Thesium umbellatum L. i uperior. sed by . 
corymbulosum Mx. oo tra- 
Dicynta. 
Apocynum androsaemifolium L. On the river St. Louis. 
July. 
Thaspium aureum Nutt. NG) Dattor 
Smyrnium aureum w. ‘ Ke ae 
TRIGYNIA. 
Viburnum Lentago LZ. Near Detroit, May 20th. 
TETRAGYNIA. 
Parnassia caroliniana Mx. East shore of Lake Michigan, 
Sept. 6th. 
PonTAGYNIA. 
Aralia mudicaulis L. (Sarsaparilla.) Near Detroit. 
HEXANDRIA. 
Mowoeynta. 
Tradescantia virginica L. A variety with very narrow 
leaves. West shore of Lake Michigan, August 27th. 
Hypoxis erecta L. (Wabunocausk.) Shores of Lake 
Huron. 
Phalangium escullentum, Nutt. Gen. 1. p, 219. ) Root bul- 
Quamash Pu. Fu. Am. 1. p. 226. bous, trun- 
Scilla esculentum Bor. Mac. 1596. § cated,near- 
ly round, and an inch and a half or two inches in diameter. 
Scape two or three feet high, leaves more than a foot long, 
and about half an iach wide. Flower pale purple, ina spi- 
