Dec, 1917] The Asterece of Ohio 41 



1(). Solidago canadensis L. Canada Goldenrod. Slender 

 glabrous or pubescent plants, 1-5 ft. high. Leaves 3-nerved, 

 linear-lanceolate, 2-5 in. long, J-^ in. wide, entire or serrate 

 with somewhat appressed teeth, acuminate at the apex, narrowed 

 at the base, sessile, or the lower petioled, glabrous or pubescent. 

 Heads secund on the spreading branches of the often large 

 panicle; rays 4-G, short; bracts of the involucre thin, linear, 

 acutish. Achenes small and glabrous. Hillsides, thickets and 

 banks of streams. August to October. General and abundant. 



17. Solidago serotina Ait. Late Goldenrod. A stout 

 glabrous often glaucous plant, 3-8 ft. high. Leaves lanceolate 

 to oblong-lanceolate, thin, the lowest petioled, glabrous on 

 both sides or pubescent beneath, more or less rough-margined, 

 3-6 in. long, ^-^ in. wide, acuminate at the apex, narrowed at 

 the base. Heads crowded on the spreading or recurved branches 

 of the usually long leafy, often puberulent panicles; rays 7-15, 

 rather large; bracts of the involucre oblong, thin and obtuse. 

 Achenes finely puberulent. In moist soil. August to Sep- 

 tember. General. 



18. Solidago nemoralis Ait. Gray Goldenrod. A slender 

 erect, or sometimes depressed and prostrate ash-gray plant, 

 ^-2 ft. high, finely and densely pubescent. Leaves thin, 

 roughened, the basal and lower ones ovate-lanceolate or spatu- 

 late, petioled, obscurely triple-nerved, obtuse to acute, crenate- 

 dentate, 3-6 in. long, ^-1 in. wide; the upper becoming gradually 

 smaller, oblanceolate or linear-oblong acute or entire; heads 

 secund on the spreading or recurving branches of the terminal 

 usually one-sided panicle; rays 5-9; bracts of the involucre 

 linear-oblong. Achenes pubescent. In dry soil. July-Novem- 

 ber. General. 



19. Solidago rigida L. Stiff Goldenrod. A stout simple or 

 branched plant with densely and finely, pubescent, hoary stem, 

 often becoming glabrous below with age. Leaves thick, fiat, 

 rigid, ovate to oblong, obtuse, pinnately veined, roughened on 

 both sides or usually only beneath; the lower and basal long- 

 petioled, sometimes 1 ft. long and 3 in. wide, entire or serrulate; 

 the upper sessile, clasping and rounded or sometimes narrowed 

 at the base, 1-2 in. long. Heads many-flowered, in a dense 

 terminal compound corymb, the clusters sometimes slightly 

 secund; rays 6-10, large; involucre broadly campanulate with 

 oblong obtuse bracts, the outer ones pubescent. Achenes 



