IOO ROCHESTER ACADEMY OF SCIENCE. [Oct. 8, 



837. U. racemosa Thomas. Corky Elm. 



Low rich grounds ; rare. Three specimens on the flats along Ironde- 

 quoit creek, Brighton. Henrietta, M . S. Baxter. Brockport, Prof. IV. 

 H. Lennon. Wayne county. 



346. CELTIS Tourn. [L.] 



838. C. occidentals L. Hackberry. 



Scarce. River flats, near Vincent st. bridge, Rochester, C. C. Laney . 

 East shore of Irondequoit bay, Webster, G. T. Fish. Rush, P.O. 

 Greene ! Wayne county. 



347. CANNABIS Tourn. [L.] 



839. C. sativa L. Hemp. 



Waste places ; infrequent. 



348. HUMULUS L. 



840. H. Lupulus L. Common Hop. 



Infrequent. Not known to be indigenous. 



34Q. MORUS Tourn. [L.] 



841. M. rubra L. Red Mulberry. 



Rich woods and ravines ; scarce. 



842. M. alba L. White Mulberry. 



River banks, hillsides, waysides ; scarce. 



350. URTICA Tourn. [L.] Nettle. 



843. U. gracilis Ait. 



Low places, fence rows, banks of streams; common. 



844. U. dioica L. 



Rare. Prof. Lennon. Wayne county. 

 — U. cham,edryoides Pursh. Introduced. Dr. C. M. Booth. 



351. LAPORTEA Gaud. [Urticastrum Fabric] 



845. L. Canadensis Gaudichaud. [C/rticastrum divaricatum (L.) Kuntze.] 



Moist rich woods and ravines ; frequent. 



352. PILEA Lindl. [Adicea Raf.] 



846. P. pumila Gray. {Adicea pumila (L.) Raf.] Rich-weed. 



Moist shaded soil, springy places, and in shallow clear water; common. 



353. BCEHMERIA Jacq. 



847. B. cylindrica Willd. [B . cylindrica (L.) Willd.] False Nettle. 



Moist shaded soil and marshes ; frequent. 



PLATAN ACE.E. 



354. PL A TAN US L. 



848. P. occidentalis L. Sycamore. Button-wood. 



Woods and banks of streams ; infrequent. 



JUGLANDACE^E. 



555- JUGLANS L. 



849. J. cinerea L. Butternut. 



Rich woods, river banks and ravines ; frequent. 



