40l] FLORA OF COLUMBIA AND VICINITY 259 



9. Bracts ovate; pappus red-purple; inflorescence cymose; 

 leaves lanceolate to linear; heads sn.all. V. 

 Duggariana Daniels. Duggar's ironweed. 



10. Bracts ovate; pappus red-purple; inflorescence cjrnose; 



leaves broadly ovate; iieads medium. V. partheni- 

 oides Daniels. Parthenium-uke ironweed. 



11. Bracts ovate; pappus red-purple ; inflorescence cymose- 

 paniculate; leaves long oblong-lanceolate; heads me- 

 dium. V. peralta Daniels. Paniclkd ironweed. 



12. Bracts ovate; pappus light yellow; inflorescence cy- 

 niose; leaves ovate-lanceolate; heads small. V. fla- 

 vipapposa Daniels. Flavipappose ironweed. 



13. Bracts oblong; pappus red-purple; inflorescence cy- 

 mose; leaves ovate-lanceolate; heads small to medium. 

 V. pseudobaldwinii Daniels. False Baldwin's 

 ironweed. 



14. Bracts oblong; pappus red-purple; inflorescence cy- 

 mose; leaves elliptic-lanceolate; heads large. V. 

 pseudodrummondii Daniels. False Drummond's 

 ironweed, 



b. Drummondiae. Bracts seldom, or but slightly reflexed: 

 plants pubescent or tomentose. 



15. Leaves pubescent or tomentose underneath ; involucres 

 S-7H mm. high, slightly spreading. V. interior 

 Small. Inland ironweed. 



16. Leaves pubescent or tomentose underneath; involucres 

 6 mm. high, closely appressed. V. Illinoensis Glea- 

 son. Illinois ironweed. Ontario and Ohio to Iowa. 



17. Leaves densely tomentose beneath; heads 10-12^2™"^' 

 high; pappus tawny or purplish. V. Drummondii 

 Shuttlw. [ K. alilssima grandiflora Gray. V. Mis- 

 surica Raf.]. Drummond's ironweed. 



18. Leaves densely tomentose beneath; heads 12-15 mm. 

 high; pappus buff. V. Reedii Daniels. Reed's 

 ironweed. 



c. Altissimae. Bracts seldom, or but slightly, reflexed: 



plants glabrous, or nearly so. 

 19. Leaves glabrous, or nearly so, on both sides; pappus 

 straw-colored; bracts acuminate, the inner occasion- 

 ally aristate. V. glaUCa (L.) Britton [V. Novebo. 

 racensis latifolia Gray]. Broad-leaved ironweed. 

 Maryland and Pennsylvania to Ohio and Michigan; 

 Florida to Louisiana. 

 20. Leaves glabrous, or nearly so, on both sides; pappus 

 straw-colored; bracts obtuse. V. flaccidifolia Small. 

 Flaccid-leaved ironweed. Georgia to Alabama 

 and Tennessee. 



