THE 



Ohio Journal of Science 



PUBLISHED BY THE 



Ohio State University Scientific Society 



Volume XVIII DECEMBER, 1917 ' No. 2 



TABLE OF CONTENTS 



Leonard — The Astereae of Ohio 33 



Adkins — Some Ohio Heteroptera Records 58 



Claassex — Second Alphabetical List of the Lichens Collected in Several 

 Counties of Northern Ohio 62 



THE ASTEREiE OF OHIO. 



Emery C. Leonard. 



Mostly erect geophilous perennial or occasionally annual 

 herbs with stems branching at the top or in a few cases scapose. 

 Leaves alternate, sessile, petioled, or clasping. Flowers bispor- 

 angiate, carpellate, or staminate, on a common receptacle, 

 forming heads subtended by an involucre of few to many 

 bracts imbricated in one or more series. Pappus of capillary 

 bristles, teeth, or scales, or sometimes wanting. Ray flowers 

 present in most cases. Achenes glabrous or pubescent. 



Synopsis of the Astereae. 



I. With 3-ellow ray flowers or with rays absent (white in Solidago bicolor). 



1. Pappus of scales, not capillary bristles Grindelia. 



2. Pappus of capillary bristles with or without an outer series of shorter ones. 



a. Pappus double, an inner series of capillary bristles and an outer series 

 of short ones; heads large. Chrysopsis. 



h. Pappus a single series of capillar}^ bristles; heads small. 



(1) Receptacle alveolate; rays mostly fewer than the disk flowers. 



Solidago. 



(2) Receptacle fimbrillate; rays more numerous than the disk flowers; 



heads in a corymbose paniculate inflorescence. Euthamia. 



II. Ray flowers present, not yellow but some shade of pink, blue, purple, white 



or greenish. 

 1. Pappus a crown of aw'ns or none, never of typical capillary bristles. 



a. Pappus none or a mere crown of minute bristles; receptacle conic. Bellis. 



b. Pappus a crown of few awns; receptacle flat or convex. Boltonia. 



33 



