PENTANDRIA. TRIGYNIA. S3 



trifoliatum. Muhl. Cat. 

 Thapsia trifolia. L. 

 On the hills near Hobokcn. If- May — July, yellow. 

 2 intergerrimum. L. Fields and meadows. New-Jersey. 

 %. June, yellow. 



151. Thaspium. Nutt. 



aureum. Nutt- 

 Smyrnium aurcuni. L. 

 On rocky hills. 1£. June, yellow. 



TRIGYNIA. 



152. Rhus. L. Sumach. 



1 typhinum. L. (Stag- shorn. J In rocky hilly situations. 



h . June, greenish. 



2 glabrum. L. (Common. J In hedges, thickets, &c. fc. 



July, greenish. 



3 copallinum. L. (Mountain sumach. J In dry woods. 1? . 



July, greenish. 



4 vernix. L. (Swamp sumach. , Poison elder. J Swamps 



and wet woods, h • June, greenish. 



5 Toxicodendron. L. (Poison oak. J In woods. \ . June 



—July. 

 B. radicans. — vulgare. Mx, 

 R. radicans. L. 

 Climbing on trees, in woods. \ . June, greenish. 



153. Viburnum. L. 



1 prunifolium. L. (Black haw. J In woods and hedges. 



h . May— June, white. 



2 Lentago. L. In woods. N. Jersey, b May. white. 



3 nudum. L. In swamps. J? . June, white. 



4 dentatum. L. (Arrow wood.) In woods and along 



ditches, h . June — July, white. 



5 piibescens. Ph. 



V. dentatum, pubcscens. Ait. 

 On rocky hills, h . June — J uly. white. 



6 acerifolium. Willd. In woods and copses, k . May-*- 



June. 



7 Lantanoides. Mx. (Hobble bush.) Rocky woods. Man- 



hattan ville, &c. J?. June, white. 



154. Sambucus. L. Elder. 



Canadensis. L. In hedges and swamps, h . May — Ju- 

 ly, white. 



155. Staphyuea. L. Bladder nut. 



trifolia. L. In rocky shady woods. J? . May — June, 

 white. 



156. Sarothra. Lmk. Nit-weed. 



Gentianoidcs. L. ( Ground pine. ) 

 Hypericoides. Nutt. 

 Hypericum Sarothra. Mx. 

 In dry sandy fields, a. June — Aug. yellow. 

 B 



