ASTERACEAE: ASTEREAE 173 



7. Solidago. 933. 



Inflorescence a panicle or thyrsus; not flat-topped. 

 Leaves not triple-veined. 



Outer involucral bracts with spreading tips. 1. S. petioiaris. 

 All the involucral bracts with appressed tips. 

 Heads not secund on the branches of the inflorescence. 



2. S. rigidiuscula. 

 Heads secund on the branches of the inflorescence. 



Racemes few; leaves coarsely serrate. 3. S. ulmifolia. 



Racemes numerous; leaves crenate-dentate. 8. S. nemoralis. 

 Leaves triple-veined i. e. with 2 lateral veins much larger than 

 the rest. 

 Stems glabrous. 

 Leaves of the stem lanceolate, sharply serrate. 4. S. serotina. 

 Leaves of the stem linear-lanceolate, entire or sparingly serrate 

 with low teeth. 5. S. missouriensis. 



Stem pubescent or scabrous. 

 Leaves lanceolate. 



Plants mostly over 6 dm. high not yellowish. 

 Leaves sharply serrate, not cinereous-pubescent. 



6. S. canadensis. 

 Leaves less serrate, sometimes all entire, cinereous-pubes- 

 cent. 6a. S. can. procera. 

 Plants not over 3 dm. high, yellowish canescent, leaves re- 

 motely serrate above the middle or entire. 



7. S. gilvocanescens. 

 Leaves oblong, oblanceolate or spatulate. 



Panicle one-sided, its branches recurved or spreading, leaves 



obscurely 3-veined. 8. S. nemoralis. 



Panicle not one-sided, its branches erect, leaves strongly 



3-veined. 9. S. mollis. 



Inflorescence a flat-topped corymbose cyme. 10. S. rigida. 



1. Solidago petioiaris Ait. 

 Red Cloud. 



2. Solidago rigidiuscula (T. & G.) Porter. 



On prairies in the southeastern part of the state. Lincoln; Nebraska 

 City; O'Neill. 



3. Solidago ulmifolia Muhl. 



On river bottoms in the southeastern part of the state. Nemaha; 

 Richardson County. 



4. Solidago serotina Ait. Late Goldenrod. 

 Common on prairies all over the state. Dismal River; Ewing; Lin- 

 coln; Minden; Nebraska City; Thedford; Valentine; Wymore. 



5. Solidago missouriensis Nutt. Missouri Goldenrod. 

 On dry prairies throughout the state. Basset; Banner County; Big 

 Sandy Creek; Cheyenne County; Franklin; Haigler; Hat Creek Basin; 

 Kimball; Kiwa Valley; Lincoln; Nebraska City; Plummer Ford; 

 Thedford; Weeping Water. 



6. Solidago canadensis L. Canada Goldenrod. 

 Common on prairies over the entire state. Callaway; Lincoln; Ne- 

 braska City; Plum Creek; Red Cloud; Scotts Bluff County; Seward 

 County. 



