RANUNCULACEAE 139 



3. Clematis ochroleuca Ait. Erect Sii^ky Clematis. (Man. p. 

 422; I, F. / 15SS.) N. Y., Pa. and southward to Ga. — Pennsylvania : 

 Chester, London Grove. 



17. ATRAGBNE L. 

 1. Atragene Ameticana Sims. Purple Virgin's Bower. (Man. 

 p. 423 ; I. F./ 7592. ) Hudson Bay to Man., N. C. and Minn.— Penns}'l- 

 vania : Monroe ; Susquehanna ; Sullivan ; Northampton ; Bucks ; 

 Montgomery ; Berks ; Chester ; Lancaster ; Huntingdon. 



18. TRAUTVETTERIA F. & M. 

 1. Trautvetteria Carollnensis (Walt.) Vail. False Bugbane. (Man. 

 p. 423 ; I. F. /. /S94- ) On shaded banks, Pa. to Mo. and Fla. — Pennsyl- 

 vania : Fayette ; Allegheny. 



19. BATRACHITTM S. F. Gray. 

 Achene with a beak about i mm. long-. i. B. divaricatum . 



Achene beakless or nearly so. 2. B. trichophyllum. 



1. Batrachium divaricatum (Schrank) Wimm. StiEE White 

 Water-crowfoot. (Man. p. 429; I. F./. 1627.) In ponds and slow 

 streams, Ont., New England, northern N. J. and Pa. to the Pacific Coast, 

 extending south in the Rocky Mts. to Ariz. Also in Eu. — Pennsylvania : 

 Huntingdon ; Erie, Presque Isle. 



2. Batrachium trichophyllum (Chaix. ) Bossch. White Water- 

 crowfoot. (Man. p. 429; I. F. /. 1626.) In ponds and streams, N. S. 

 to B. C, to N. C. and Calif. Also in Eu. and Asia. — Pennsylvania : Bucks ; 

 Monroe ; Susquehanna ; Philadelphia ; Delaware ; Chester ; 

 Lancaster ; Franklin ; Lycoming ; Huntingdon. 



20. HALERFESTES Greene. 

 1. Heleipestes cymbalarla (Pursh) Greene. Seaside Crowfoot. 

 (Man. p. 430; I. V.f. 163 1.) On sandy shores, Lab. to N. J., west to the 

 N. W. Terr., and in saline soil throughout the western half of the conti- 

 nent, extending into Mexico. Also in Asia and S. K.-^Pennsylvania : 

 Franklin. 



21. FICARIA Huds. 



1. Ficarla Ficaria (L.) Karst. LESSER Celandine. (Man. p. 430; 

 I. F.y. i6zg ) N. Y. and Pa. Fugitive from Eu. — Pennsylvania : Del.-v- 

 WARE ; Philadelphia. 



22. RANUNCULUS L. 



Aquatic, floating plants : submerged leaves with dissected blades : floating 

 leaves with lobed blades. 

 Achenes marginless : corolla 7-14 mm. broad. i. R. Purshii. 



Achenes callous-margined : corolla 18-36 mm. broad. 



2. R. delphinifolius. 

 Terrestrial or mud plants ; leaves with entire, toothed, lobed or divided blades. 

 A. Mud plants : leaves with entire or denticulate blades. 

 a. Annuals ; achenes beakless. 3. R. pusillus. 



