EANUNCULACEAE. 151 



Beak stout, sword-shaped ; roots slender; leaflets cuneate 

 at base. 14. B. septentrionalis. 



Beak of acbene slender, subulate; roots thickened. 

 Leaf -segments broad, oblong or obovate. 



15. R. hispidus. 

 Leaf -segments narrow, linear-oblong. 



16. /?. fnscicularis. 



2. Achenes with a few scattered papillae near the maroins. 



17. E. parvulus. 



3. Achenes muricate or spiny. 18. 2?. arveasis. 



1. Ranuncuxus Purshii Richards. M. p. 424. Moist soil. Summer. 



Dauphin— (P.). 



2. Ranunculus delphinifolius Torr. Yelloiv Water Crowfoot. M. p. 425. 



Ponds. Summer. 

 MoHmoMf^— Freehold (C). 

 New Castle— Near Ogletown, Tatnall; Townsend, Caiiby. 



3. Ranunculus pusillus Poir. M. p. 425. Wet places. Spring and 



summer. 



Bucks— Near Quakertown (Pr.). Chester— {!'.). 



Burlington — Taunton, Moorestown (C). Camden — Camden (C). 

 if erc-er— Princeton, Trenton (C). Middlesex— Woodhrk^ge, near Mon- 

 mouth Junction (C). 



New Castle — Below Collins' Beach and Long Bridge, Canby; Ogle- 

 town, Tatnall and Commons. 



4. Ranunculus reptans L. M. p. 425. Gravelly and sandy banks. Sum- 



mer. 

 i^McAs— Soli day's Island, Moyer (Fr.). La?icaster— Columbia (Ca.), 

 Susquehanna banks, Little Washington (Le.), York Furnace (Wn.). 

 Northampton— {V.). Dawp /lin—Harrisburg (Wn.). 



5. Ranunculus obtusiusculus Raf. M. p. 425. Marshes. Summer. 



Bucks — Rock Hill (Fr.). Delaware — Tinicum, Dr. Geo. Smith (B. 

 Sm.). Chester— (P.). La/tcctster— Reinholdsville (Ca.). TJerA's— Ham- 

 burg (Ke.). Le7w<7?t—Lowhill, Jordan Creek (Kr.). Dauphin— (P.). 



Camden— Camdien, Mart. (B. C), Gloucester (Te.). G?owoe,s*er— Near 

 Mickleton (He.), Swedesboro (Li.), Washington Park (Mac), Repaupo 

 (Sa.), Westville, Mantua Creek (Wn.). Mercer — Trenton (Wn.). 

 Middlesex— 'Woodhridge (C). 



New Castle — hea's Run, Edgemoor Station, Stanton, Tatnall; New- 

 port, Old Red Clay Creek, Commons. 

 0. Ranunculus abortivus L. M. p. 426. Woods and moist ground. 

 Spring. 



7. Ranunculus micranthus Nutt. M. p. 426. Rich woods. Spring. 



JSitfAs— Sellersville (Ja.) (Fr.). Lancaster— (F.). 

 Hunterdon — Stockton (C). 



8. Ranunculus sceleratus L. Ditch Crowfoot. M. p. 427. Wet ditches. 



Spring and summer. 



9. Ranunculus recurvatus Poir. M. p. 427. Woods. Spring. 



10. Ranunculus acris L. Tall Buttercup. M. p. 427, Fields and waste 



places. Summer. 



