42 The Ohio Journal of Science. [Vol. XVIII, No. 2, 



glabrous, 10-15-nerved. In dry, gravelly, sandy, or rocky 

 soil. August to October. Erie, Ottawa, Lucas, Defiance, 

 Auglaize, Madison, Franklin, Lawrence. 



20. Solidago ohioensis Ridd. Ohio Goldenrod. A very 

 smooth, simple-stemmed plant, 2-3 ft. high. Leaves firm, 

 pinnately veined, flat; the lower and basal ones elongate- 

 lanceolate, or oblong-lanceolate, obtuse, long-petioled, serrulate 

 the end or towards entire, often 1 ft. long ; the upper smaller ; those 

 of inflorescence often bract-like. Heads 15-25 flowered, numer- 

 ous, in a terminal compound corymb; rays 6-9, small; bracts 

 of the narrow campanulate involucre oblong, obtuse and glabrous. 

 Achenes glabrous, 5-nerved. August to September. Stark, Erie, 

 Wyandot, Franklin, Champaign, Clark, Montgomery. 



2L Solidago riddellii, Frank. Riddell's Goldenrod. A 

 stout plant, glabrous or slightly pubescent above, 1-3 ft. high. 

 Leaves numerous, thick, glabrous, entire, acute at each end; the 

 lower and basal ones long-petioled, elongate, lanceolate, some- 

 what triple-nerved, conduplicate, often 1 ft. long, ^-| in. wide; 

 the upper smaller, sessile, usually clasping at the base, con- 

 duplicate and somewhat falcate. Heads 20-30 flowered, numer- 

 ous, in a dense corymb; rays 7-9, narrow; bracts of the oblong- 

 campanulate involucre broadly oblong to obtuse. Achenes 

 5-nerved, glabrous. August to September. Lucas, Fulton, 

 Wyandot, Franklin, Ivladison, Clark. 



Euthamia Nutt. Fragrant Goldenrod. 

 Perennial herbs with corymbosely branched stems. Leaves 

 linear to linear-lanceolate, entire, sessile, punctate, 1-5-nerved. 

 Heads very numerous and small. Clustered in a large, corym- 

 bose, convex-topped inflorescence; bracts of the involucre 

 obtuse, sometimes glutinous, appressed, imbricated in several 

 series; ray-flowers carpellate and small; disk-flowers bisporangi- 

 ate. Pappus of simple even capillary bristles. Achenes villous- 

 pubescent. 



1. Leaves distinctly 3-5-nerved; heads 20-27 or more flowered. E. graminifolia. 



1. Leaves 1-nerved, with a pair of indistinct lateral ones; heads rarely over 



20-flowered. -E. tenuifolia. 



1. Euthamia graminifolia (L.) Nutt. Bushy Fragrant 

 Goldenrod. A paniculately much branched or rarely simple 

 plant, glabrous or roughish-pubescent, 2-4 ft. high. Leaves 

 numerous, linear-lanceolate, acute to acuminate at both ends, 



