336 FLORA OF PHILADELPHIA. 



31. HELI0P8IS Pers. Ox-eye. 



Leaves smooth or nearly so; pappus none, or of 2-4 short teeth. 



1. H. helianthoidea. 

 Leaves rough; pappus crown-like, or of 1-3 sharp teeth. 2. H. scabra. 



1. Heltopsis helianthoides (L.) B. S. p. M. p. 984. Banks and copses. 



Summer. 



Philadelphia—FaiTmount Park (Wu.). ^mcAs— Near Telford (Fr.), 

 Narrowsville (Ja.). MoMt</ome/-]/ — Shanuonville (Cr.). Delaware — 

 Media, Lenni (Pu.), Williamson (Ke.), Swarthmore (Pr.), Valley of 

 Darby Creek (B. Sm.). Chester— Westtov/u (Le.) (W. Tr.). Lancaster 

 — (P.). Northamptoii — Easton, Porter (B. C). 



Burlington— Crosswick's Creek (C). Ca?ndew — Camden (He.). Glou- 

 cester— Westville (Li.) (Wn.). 



New Castle — Frequent. 



2. Heliopsis scabra Dunal. M. p. 984. Dry soil. Summer. 



Lancaster — (P.). Northampton — Easton, Porter (B. C). 

 Gloucester — Washington Park (Ja.). 



32. ECLIPTA L. 

 1. EcLiPTA ALBA (L.) Hassk. M. p. 984. Along streams and waste places. 

 Summer. 



33. RUDBECKIA L. Cone-flowek. 



Disk globose or ovoid, and purple or dark brown in fruit ; lower leaves entire 

 or lobed. 

 Lower leaves deeply 3-lobed or 3-divided. 1. R. triloba. 



Leaves neither 3-lobed nor 3-divided. 



Plants hispid ; chaff acute or acutish, hirsute at summit ; style-tips 

 subulate. 

 Stem-leaves lanceolate, ovate to oblong; involucre shorter than 



the rays. 2. R. hirta. 



Stem-leaves oval to obovate ; involucral bracts f oliaceous, nearly 

 as long as the rays. 3. R. Brittonii. 



Plants pubescent, hirsute or glabrate; style-tips obtuse. 

 Leaves denticulate or entire; rays 1.8-2.5 cm. long. 



4. R. fulgida. 

 Leaves dentate or laciniate ; rays about 3.5 cm. long. 



5. R. speciosa. 

 Disk elongated or cylindric in fruit, yellowish or gray; lower leaves pin- 



nately divided or pinnatifid. 6. R. laciniata. 



1. Rudbeckia triloba L. M. p. 986. Moist soil. Summer and fall. 



Delaware— Darby (W. Tr.). C/ies<er— Devon (U. C. S.). 



2. Rudbeckia hirta L. M. p. 986. Meadows. Summer. 



3. Rudbeckia Brittonii Small. M. p. 987. Woods. Early summer. 



Lancaster — (P.). 



4. Rudbeckia fulgida Ait. M. p. 987. Dry soil. Autumn. 



Bucks— Bidge Valley, Rock Hill (Fr.), Argus (U. C. S.). Montgomery 

 —Green Lane (VP.). Delaware— Cheyney (Fu.), Chad's Ford (Te.), 

 Concord (W. Tr.). Lancaster— 'New Texas (Pr.). 



Hunterdon — Rosemont (C). 



New Castle — Old fields north of Wilmington; frequent. 



