RANUNCUIvACEAE ' 1-59 



3. Clematis ochroleuca Ait. Erect Silky Clematis. (Man. p. 

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

 Chester, London Grove. 



17. ATRAGENE L. 



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

 p. 423 ; I. F.y. 1592. ) Hudson Bay to Man., N. C. and Minn. — Pennsyl- 

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

 Montgomery ; Berks ; Chester ; Lancaster ; Huntingdon. 



18. TRAUTVETTERIA F. & M. 



1. Trautvetteria Carolinensis (Walt.) Vail. False Bugbanr. (Man. 

 p. 423 ; I. F. /. /J9/) On shaded banks, Pa. to Mo. and Flu.—Pt'nnsyl- 

 vania: Fayette ; Allegheny. 



19. BATRACHIUM 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 (vSchrank) Wimni. vStiff White 

 Water-crowfoot. (Man. p. 429; I. V.f. 162J.) In ponds and slow 

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

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

 Huntingdon ; Erie, Presque Isle. 



2. Batrachium trichophyUum (Chaix. ) Bossch. White WaTER- 

 CROWFOOT. (Man. p. 429; L F./. 1626.) In ponds and strean^s, 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. HALERPESTES Greene. 

 1. Helerpestes cymbalaria (Pursh) Greene. Seaside Crowfoot. 

 (Man. p. 430 ; I. F./. /6j/.) On sandy shores, Lab. to N. J., we-'^t 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. A. — Pennsylvania : 

 Franklin. 



21. FICARIA Huds. 



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

 I. F./. 1629 ) N. Y. and Pa. Fugitive from B.n.— Pennsylvania : Dela- 

 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. delt>hinifolius. 

 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. 



