MONOECIA. HEXANDRIA. 75 



TETRANDRIA. 



392. Alnus. Willd. Alder. 



serrulata. Willd, (Common or haxle alder.') 

 Betula serrulata. Ait. 

 rugosa. Ehrh. 

 In swamps, woods and along hedges. \ . March 26. April. 



393. Urtica. L. Nettle. 



1 pumila. Willd. (Rich*weed.) Wet shady places. #. 



July — Aug. 



2 dioica. L. (Common-nettle.) Road sides. Rare about 



New- York. U • July. 

 5 Canadensis. L. In Newark meadows. Eddy. U- 

 Sept. 



394. Boehmeria. Willd. 



cylindrica. Willd. 

 Urtica cylindrica. L. 

 In shady swamps. Bloomingdale and Weehawk. u • July 

 —Aug. 



395. Morus. L. Mulberry. 



rubra. L. Woods. Bloomingdale, \. May— June. 



PENTANDRIA. 



396. Xanthium. L. Clotweed. 



1 Strumarium. L. (Lesser burdock.) In fields about 



Harsimus, N. Jersey. 0. Sept. 



2 Orientale. Muhl. Cat. 

 maculatum. Raf. 

 macrocarpon. D. C. ? 



On the sandy shores of the harbour of New- York, and on the 

 sea coast. 0. Aug — Sept. 



397. Ambrosia. L. Hog-weed. 



1 trifida. L. On the banks of ditches and in waste places, 



0. Sept. 



2 elatior. L. In old fields. 0. Sept. 



3 artemisifolia. L. In old fields. ®. Aug. — Sept. 



398. Amaranthus. L. 



1 albus. L. In old fields. ®. July — Aug. 



2 hydridus. L. In cultivated grounds. #. Aug. 



3 lividus. L. In cultivated grounds. . Aug. 



HEXANDRIA. 



599. Zizania. L. Canada rice. 



clavulosa. Mx. ( Water oats, or wild rice.) 

 aquatica. Ph. 

 In Hackensack meadows. ©. Muhl. If. Ph. Aug. — Oct. 



K 



