Dec, 1917] The AsterecE of Ohio 37 



16. Leaves verv rough on the upper surface, serrulate; stem strongly angled. 



5. patula. 

 11). Leaves minutely roughened on the upper surface; stems terete or nearly so. 17. 



17. Main branches of the inflorescence few, usually leafy-bracted at the base, 



widely divergent, very slender. S. ulmifolia. 



17. Main branches of inflorescence numerous, rather crowded, spreading, recurved 



or ascending. 18. 



18. Leaves firm, tapering gradually to the base, the uppermost chiefly entire. 18. 



18. Leaves thin, the lower and middle stem leaves rather abruptly narrowed to a 



petiole; basal leaves mostly serrate. i'. arguta. 



19. Leaves ovate-lanceloate or' oblong-lanceolate; panicle usually longer than 



broad; rays 2-8. S. neglecta. 



19. Leaves lanceolate or oval-lanceolate; panicle usually as broad as high; rays 



8-12. S. juncea. 



20. Leaves ovate-oblong, mostly rough on both sides; flowers comparatively 



large. -5- rigida. 



20. Leaves lanceolate or oblong-lanceolate, glabrous or nearly so; flowers com- 



paratively small. 21. 



21. Leaves oblong-lanceolate, serrulate. 5. ohioensis. 

 21. Leaves lanceolate or narrowly lanceolate, entire. S. riddellii. 



1. Solidago squarrosa Muhl. Stout Goldenrod. Stem 

 stout, simple, or rarely branched, glabrous, mostly pubescent 

 above, 2-5 ft. high. Leaves glabrous or sHghtly pubescent, the 

 lower and basal ones ovate, oval, or broadly spatulate, acute or 

 obtuse, 1-4 in. wide; the upper leaves oblong, sessile, acute, 

 entire or slightly toothed. Heads numerous, in a narrow 

 terminal often leafy thyrsus, sometimes 12 in. long; rays 10-16, 

 showy; involucral bracts green with acute or obtuse, usually 

 strongh^ recurved tips. Achenes glabrous. In rocky soil. 

 August to September. Ashtabula, Lake, Cuyahoga. 



2. Solidago caesia L. Wreath Goldenrod. A plant with a 

 round, slender, glabrous, often glacous, blue or purplish stem, 

 branched or simple, 1-3 ft. high. Leaves lanceolate to oblong- 

 lanceolate, sessile, acuminate at the apex, narrowed at the base, 

 glabrous, sharply serrate, 3-5 in. long, \-\\ in. wide. Heads 

 in axillary clusters or racemes, often forming a stout terminal 

 thyrsus; involucral bracts obtuse and appressed. Achenes 

 pubescent. Woods and thickets. August to October. General. 



3. Solidago flexicaulis L. Zig-zag Goldenrod. Stem 

 glabrous, angled, zig-zag, usually simple. Leaves thin, ovate, 

 acuminate at the apex, narrowed at the base into margined 

 petioles, pubescent or glabrous beneath, sharply serrate, 2-7 

 in. long, 1-4 in. wide, the upper-most often lanceolate and 

 entire. Heads in stout axillary clusters or rarely in a narrow 

 terminal thyrsus; bracts of the involucre obtuse to acute> 

 appressed. Achenes hirsute-pubescent. In rich woods. July 

 to September. Eastern Ohio, as far west as Cuyahoga, Fair- 

 field, Jackson and Lawrence Counties; also in Ottawa County. 



