THE CAYUGA FLORA. 79 



767. P. Virginianum, L. (H. and C.) 

 Shaded soil ; not common. Aug.-Sept. 



"Lake Marshes" (yKellermann, 1873.) probably near the Indian 

 Spring. Near Negundo Woods. Wild bank beyond the Fleming 

 S. H. Renwick Farm. 



768. P. aviculare, L. KNOT-GRASS. (H. and C.) 

 Roadsides ; frequent. Aug. -Oct. 



A form on the sands at Sheldrake Point, has narrow glaucous 

 leaves and large shining stipules, thus resembling P. maritimum, 



L. 



769. P. erecftum, L., (P. aviculare, L., var. erectum, Roth,) 



(H. andC.) 

 Roadsides, borders of rich fields ; frequent. Aug. -Oct. 



770. P. arifolium, L. Tear-Thumb. (C. by Dr. Wright.) 

 Marshes ; infrequent. Aug.-Sept. 



Marshes near Inlet and Fall Cr. Ledyard, 1827, (Herb. J. J. 

 Thomas.) Riugwood. Near Freeville. Summit Marsh. Cayuga 

 Marshes. 



771. P. sagittatum, L. Tear-Thumb. (H. and C.) 

 Low grounds ; abund., especially on the Inlet Marshes. Aug.- 

 Sept. 



772. P. Convolvulus, L. Black-bindweed. (H. and C.) 

 Cultivated ground ; common. Aug. -Oct. 



773. P. dumetorum, L. Climbing-buckwheat. 

 Marshes and river-banks ; frequent. Aug.-Sept. 



774. P. dumetorum, L. var. scandens, Gray, is also frequent. 



(C. by Dr. Wright.) 

 Fagopyrum, Tourn. 



F. ESCULENTum, Mcench. Buckwheat. (H. andC.) 



Fields and copses ; doubtfully permanent in any place. June- 

 July. 



Fall Cr. Abund. in apiece of woods E. of McLean, 1884 and 1885. 



ARISTOLOCHIACEjE. 



316. Asarum, Tourn. 



775. *A. Canadense, L. Wild Ginger. (H. and C.) 

 Rich soil, woods, and banks of ravines ; frequent. Apr. -May. 



317. Aristolochia, Tourn. 



776. A. ClEmatitis, L. 



Union Springs, on a bank S. E. of the depot. June. 



The plants have probably escaped from some garden, formerly near 

 the locality. First seen in 1874. They have now doubled the area 

 occupied then, spreading from the root and forming a dense vigor- 

 ous growth. Fruit occurs rarely. 



PIPERACE^. (including Saururace^. ) 

 318. Saururus, Linn. 



777. S. cernuus, L. Lizard's-Tail. (H. and C.) 

 Wet borders of marshes ; local but not rare. July-Aug. 



