42 ROCHESTER ACADEMY OF SCIENCE. [Oct. 8, 



13. R. multifidus Pursh. [R. dclphuiifolius Toney in Eaton.) Yellow 



Water Crowfoot. 



Ditches and shallow pools ; scarce. Irondequoit. West Henrietta. 

 Chili. Gates. Wayne county. 



14. R. Plammula L. var. intermedius Hook. {R. rcptans intermedins (Hook.) 



T. &: G.] Smaller Spearwort. 

 Rare. Long point, Sodus bay, Plants of Oneida Co., pp. 3, 131. 



15. R. Flammula L. var. reptans E. Meyer. [R. ?-eptans L.| Creeping 



Spearwort. 



Rare. Sandy shore of lake Ontario at Sodus bay, G. T. Fish. 



16. R. abortlvus L. Small-flowered Crowfoot. 



Damp woods and wet places ; common. 



17. R. abortivus L. var. micranthus Gray. [R. micranthits Nutt.) Dr. A. 



H. Searing. 



18. R. sceleratus L. Cursed Crowfoot. 



Wet ditches, muddy ground ; not common. Abundant in some places 

 along the borders of Irondequoit bay. 



iQ. R. recurvatus Poir. Hooked Crowfoot. 

 Wet woods and ravines ; frequent. 



20. R. fascicularis Muhl. Early Crowfoot. 



Dry or moist hillsides and banks of streams ; frequent. More abund- 

 ant in the eastern section of our district than in the western. 



21. R. septentrionalis Poir. {R.repens,oi Manual, mainly.) 



Wet meadows, ditches and marshy places ; frequent. 



22. R. repens L. Trailing Crowfoot. 



Rare. Wayne county, E. L. Hanketison. 



A double-flowered form occurs in a wet place by the roadside in the 

 village of Bergen, Genesee county. Whether a spontaneous develop- 

 nnent or an escape from cultivation is not known. JQt/i N. V. Rep. 



23. R. Pennsylvanicus L. f. lk<isTLY Crowfoot. 



Wet places ; frequent. 



24. R. acris L. Tall Buttercup. 



Fields and roadsides ; very common. 



25. A form with 7-20 petals, growing with the type by a roadside in the town of 



Brighton, 1885, J. B. Fuller ; Aug. i8y5, Miss F. Beckivith. Apparently a 

 spontaneous development ; evidently not the cultivated double variety. 



7. C. I L '17 f A L. 



26. C. palustris L. Marsh Marigold. 



Swamps and wet meadows ; common. 



H. TROLL/ us L. 



27. T. laxus Salisb. American GLOiiic-KLowER. 



Rare. Cold bog between Mt. Hope and Genesee River. 



