12 BULLETIN OF THE LABORATORIES 



8. H. acutiloba D C. 



Gravelly soil. Central and western part of county. This species 

 grows in moister situations than the last and, where the two are found 

 on the same hillside, grows lower down. April i6, 1887 ; April 

 II, 1889; April 8, 1889; March 25, 1891. 



4. Anemonella Spach. 



9. A. thalictroides Spach. Rue Anemone. 



Woods, very common. May 7, 1884; April 12, 1887 ; April 8, 

 1889; April 10, 1890; April 14, 1891. 



■ 5. Thalictrum Tourn, 



10. T. dioicum L. Early Meadow Rue. 



Rocky, wooded hillsides, common. May 20, 1884 ; April' 30, 

 x888; April 8, 1889; April 21, 1891. 



11. T. polygamum Muhl. Tall Meadow Rue. 



Alluvial soil. Toboso. June 23, 1889; August 25, 1890 ; July 



8, 1891. 



12. T. purpurascens L. Purplish Meadow Rue. 



Edge of woods, somewhat common. May 28, 1887 ; June 23, 

 1889; June 2, 1890; June 12, 1891. 



6. Ranunculus Tourn. 



13. R. circinatus Sibth. Stiff Water Crowfoot. 



Water, two to five feet deep. Reservoir and canal. August 21, 

 1888; August 12, 1890; August 5, 1891. 



14. R. aquatilis L. Var. trichophyllus Gray: Common White 

 Water Crowfoot. 



Same situations and localities as last. July 9, 1889; August 24, 

 1890; August 8, 1 89 1. 



15. R. ambigens Watson. Water Plantain Spear wort. 

 Swamps and damp woods. Granger's swamp, Granville. July 



9, 1890. 



16. R. abortivusL. Small Flowered Crowfoot. 



Yards and fields, very common. May 5, 1887; April 30, 1888; 

 April 15, 1889; May 10, 1890; April 16, 1891. 



17. R. sceleratus L, Cursed Crowfoot. 



Ditches and swamps, not common. Alexandria road, one half mile 



