gS ^ ROCHESTER ACADEMY OF SCIENCE. [Oct. 8, 



8ii. P. sagittatum L. Arrow-leaved Tear-thu.mb. 



Low grounds and marshes ; common. A form with peduncles armed 

 with fine saw-toothed prickles is frequent. 



8i3. P. Convolvulus L. Black Bind-weed. 

 Cultivated and waste grounds ; common . 



813. P. cilinode Michx. 



Rare. Sodus bay, G. T. Fish, E. L. Hankenson . 



814. P. dumetorum L. Climbing False-Blckwheat. 



Marshes; frequent. 



815. P. dumetorum L. var. scandens Gray. \P. scandens L.J 



Marshes and banks of streams ; frequent. 



33Z. FAGOPYRUM Tourn. [Gaertn.] 



816. F. ESCULENTUM Moench. [F. Fagopy?-um JL.) Karst.] Buckwheat. 



Borders of fields ; frequent. 



333. POLYGONELLA Michx. 



817. P. articulata Meisner. [Polygonum articulation Gray.) [Polygonella 



articulata (L.) Meisner.] 



Rare . Oak openings at Charlotte, Bradley. 



ARISTOLOCHIACE^. 



334. ASA RUM Tourn. [L.] 



818. A. Canadense L. Wild Ginger. 



Sides of ravines and in rich woods ; frequent. 



PIPERACE/E. [SAURUKACE.4i.] 



335. SAURURUS L. 



819. S. cernuus L. Lizard's-Tail. 



Swamps and borders of marshes ; frequent. 



LAURACE^. 



336. SASSAFRAS Nees. [Nees & Eberra.] 



820. S. officinale Nees. \S. Sassafras (L.) Karst.] Sassafras. 



Rich woods, river banks, sides of ravines, hills ; common. 



337. LINDERA Thunb. [Benzoin Fabric] 



82r. L. Benzoin Blume. [Bensoi?t Benzoin (L.) Coulter.] Si'iCE bush. 

 Damp copses, marshes ; frequent. 



THYMELyF:ACE^. 



338. DIRCA L. 



822. O. palustris L. Leather-wood. 



Rich woods, river banks, ravine sides ; infrequent. 



33g. DAPHNE L. 



823. D. Mezereum L. 



Introduced ; rare. Woods in Seneca park, //. />'. Brown. Mt. Read, 

 Greece, R . J. /•'leniing. 



