338 FLORA OF PHILADELPHIA. 



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

 9. Helianthus ttjbeeosxjs L. Jerusalem Artichoke. M. p. 996. Waste 

 places. Summer. 



35. VERBESINA L. Ceown-beaed. 

 1. Veebesina alteenifolia (L.) Britton. M. p. 997. Bich soil. Autumn. 

 Philadelphia— Gray's. Ferry, Br. Geo. Smith (Fu.) (W. Tr.), Upper 

 Wissahickon (Je.), 'Woodlands Cemetery (Mae.) (Te.), Maylandville 

 Bridge, Dr. Geo. Smith (B. 8m.). Delaware— Neiar Sandy Bank (Fu.). 

 Chester— (P.). Lancaster— Susquehanna Valley. Northampton— {P.). 

 Dauphm—Steelton (Wn.). 



Burlington — Burlington (C). Camden — Kaighn's Point (Li.). 

 New Castle— Holly Oak (U. C. S.), Landlith. 



36. COEEOPSIS L. Tickseed. 



Bays pink or occasionally white ; leaves linear, entire. 1. C. rosea. 



Bays yellow throughout. 



Stem-leaves sessile or petioled, entire, or the lower 3-5-lobed; achenes 

 often with a callous at each end of the inner side. 2. C. auriculata. 

 Leaves petioled, all but the upper 3-5-divided; rays entire. 



3. C. tripteris. 



1. Coeeopsis eosea Nutt. M. p. 998. Sandy, grassy swamps. Summer. 



Bucks— Bristol, Mart. (B. C). 



Burlington— Burlington (C), Florence (Mac.). Gloucester— Clayton, 

 Franklinville (C). Cumberland— Vineland (C). Atlantic— Egg Har- 

 bor, Main Road Station .(C), Hammonton (Cr.). Ocean— Forked Kiver 

 (Ja.) (Wn.). 



New Castle— Sassafras X-roads, Cariby. 



2. Coeeopsis aueictilata L. M. p. 999. Woods. Summer. 



. Philadelphia— Bartram 's Garden (Te.). 



3. Coeeopsis teipteris L. M. p. 999. Moist woods and thickets. Summer 



and fall. 



37. BIDENS L. 



Plants terrestrial, erect; leaves simple or divided. 



Leaves lanceolate, serrate, undivided, rarely lobed. 



Bays present, large and , conspicuous, twice as long as the disk or 



longer. 1. B. laevis. 



Bays small, not more than twice as long as the disk, sometimes very 

 short or wanting; 

 Heads nodding after flowering. 2. B. cernua. 



Heads persistently erect. 



Pappus-awns downwardly barbed. 



Involucral bracts not foldaeeous ; stem purple; flowers 



orange. . 3. B. connata. 



Involucral bracts foliaeeous; stem straw-color; flow- 

 ers greenish-yellow. 4. B. comosa. 

 Pappus-awns upwardly barbed. ■5. B. bidentoides. 

 Leaves, some or all of them, pinnately 1-3-parted or dissected. 

 Bays rudimentary, none, or very short. 



Achenes flat; leases, some or all of them, 1-3-divided. 

 Outer involucral bracts 4-8; achenes nearly black. 



Achenes 4-4.5 min. • long ; awns very short ; outer 

 bracts 4. 6. B. discoidea. 



