312 FLORA OF PHILADELPHIA. 



2. Hibeacium aurantiacum L. M. p. 904. Roadsides and fields. Summer. 



Philadelphia— Fairmount Park (Gi.). 

 Camden— Grenloch (Li.). 



3. Hieracium venosum L. Rattlesnake-weed. M. p. 904. Dry woods and 



thickets. Summer and fall. 



4. Hieracium Marianum Willd. M. p. 904. Open woods and clearings. 



Summer. 



Bucks — Springfield near Sellersville (Fr.). Montgomery — Shannon- 

 ville (Cr.). Delaware — Whetstone Bun, Marple (B. Sm.). Chester— 

 Falls of French Creek (Cr.). Lancaster— (P.). Northampton— Easton, 

 Porter (B. C). 



Camden — Grenloch, Geo. M. Beringer (B. C). Gloucester — Swedesboro 

 (Li.). Cape May — Five-mile Beach (Ja.), Avalon, Dr. J. B. Brinton 

 (He.). Monmouth— Seabright (Ke.). Hunterdon— Bosemont (C). 



5. Hieracium Canadense Michx. M. p. 905. Dry woods. Summer. 



Bucks — Near Biegelsville (Fr.). Montgomery— Perkiomen (Cr.), Wil- 

 low Grove (17. C. S.). Lehigh— Lehigh Mountain (Kr.). Northampton 

 —Bethlehem (Pr.). 



6. Hieracium paniculatum L. M. p. 905. Dry woods. Summer. 



7. Hieracium scabrum Michx. M. p. 905. Dry, open woods. Summer. 



8. Hieracium Gronovu L. M. p. 905. Dry soil. Summer. 



12. NABALUS Cass. Battlesnake-root. 



Heads 5-7-flowered; involucre very narrow, light green, 2 mm. thick; pappus 



light straw-color. 1. N. altissimus. 



Heads 8-16-flowered ; involucre broader, green, purple or glaucous, 3-6 mm. 

 thick. 

 Pappus deep cinnamon-brown.- 2. N. albus. 



Pappus straw-color or light brown. 

 Inflorescence paniculate. 



Involucral bracts with some stiff hairs, obviously shorter than 

 the pappus; panicle-branches divergent. 3. N. serpentarius. 

 Involucral bracts glabrous, equalling the pappus; panicle- 

 branches ascending or erect. 4. N. trifoliolatus. 



1. Nabalus altissimus (L.) Hook. M. p. 906. Rich, moist woods. Sum- 



mer and fall. 



2. Nabalus albus (L.) Hook. White Lettuce. M. p. 907. Woods. Late 



summer. 



3. Nabalus serpentarius (Pursh.) Hook. Lion's-foot, Gall-of-the-earth. 



M. p. 907. Fields and thickets. Summer and fall. 



4. Nabalus trifoliolatus Cass. M. p. 907. Woods and thickets. Late 



summer and fall. 

 Bucks— (P.). Montgomery— (P.). Delaware— (P.). Northampton 

 -(P.). 



5. Nabalus virgatus (Michx.) DC. M. p. 907. Sandy pine-barrens. 



Autumn. 

 Burlington — Quaker Bridge, Batsto, Pleasant Mills (C), Atsion (Le.) r 

 Woodmansie (Sa.), Brown Mills (Sts.). Camden— Jackson (C), Winslow 

 Junction, Mart. (B. C), Cedar Brook (Cr.). Cape May — Woodbine 



