MICHIGAN ACADEMY OF SCIENCE. .'^71 



Aster lacvis vnr. thyksoiukus ii. var. Similar to thi! var. fnhalun, hut 

 the iuflorosconce reduced to a thyrse often a foot or more Ion;;. Hochester, 

 Oct. 10, 1918, NO. 52091/0. 



XuittUiKui ylandnlifiritni (Ireene. The yellow burrs give it ii i»eeuliar 

 appearance at once distinguishing it from the other species. Oakwood, Sept. 

 15, 1918, No. 5118; River Rouge, Sept. 15, 1918, No. 51.'59. 



Heliaiithus petolaris N'tut. Scarce. Oakdood, Sept. 15, 1918. No. 5121. 



Artemisia </iiai)lifiI(j(lvii Nutt. Harris. July l;i, 1912, No. 5082, Billiugton 

 & Farwell. 



Erechtites hieravifolia var. prealta (Raf.) Fernald. Occasional. Detroit, 

 Sept. 20, 1918, No. 51531/2. 



Senecio obocatus var. roliuidus Britton. Huron River valley at Ypsilanti, 

 May 19, 1918, No. 4828. 



Department Botany, Parke, Davis & Co., Detroit, Mich. 



