COMPOSITAE (THISTLE FAMILY) 



8 CHRYS6PSIS. 



i a Heads V-Vz in. broad; leaves linear 



SICKLE-LEAVED GOLDEN ASTER. (C. falcata.) 

 b Heads %-i in. broad; leaves oblong to oblanceolate 



MARYLAND GOLDEN ASTER. (C. mariana.) 



9 SOLIDAGO. 



1 a Outer flowers white ....WHITE GOLDEN-ROD. (S. bicolor.) 

 b Outer flowers yellow 2 



2 a Bracts of the involucre all strongly spreading or re- 



curved RAGGED GOLDEN-ROD. (S. sguarrosa.) 



b Bracts of the involucre erect and appressed 3 



3 a Upper surface of leaves very rough or verv uneven. . 4 

 b Upper surface of leaves more or less smooth 7 



4 a Stem not hairy; lower leaves 4-15 in. long 



ROUGH-LEAVED GOLDEN-ROD. (S. pdtula.) 

 b Stem densely hairy 5 



5 a Heads arranged in a compound corymb, not in racemes; 



leaves rough on both sides. STIFF GOLDEN-ROD. (S. rigida.) 

 b Heads in i-sided racemes arranged in a panicle 6 



6 a Plant covered with fine gray hairs; leaves oblanceolate, 



usually blunt at apex.. GRAY GOLDEN-ROD. (S. nemoralis.) 

 b Plant covered with rather coarse hairs; leaves oval to 

 oblong-lanceolate, usually pointed at apex 



WRINKLED-LEAVED GOLDEN-ROD. (S. rugbsa.) 



7 a Heads in clusters in the axils of the upper leaves 8 



b Heads not in axillary clusters 10 



8 a Stem and leaves densely hairy 



HAIRY GOLDEN-ROD. (S. hispida.) 

 b Stem and leaves not densely hairy 9 



9 a Leaves lanceolate or oblong-lanceolate; stem rounded, 



often bluish or purple 



BLUE-STEMMED GOLDEN-ROD. (S. caesla.) 

 b Leaves broadly ovate; stem angled, often zigzag 



ZIG-ZAG GOLDEN-ROD. (S. flexicaulis.) 



10 a Heads in a compact, often spike-like panicle, not ar- 



ranged in i-sided racemes n 



b Heads in i-sided, spreading or recurved racemes ar- 

 ranged in a panicle 14 



11 a Stem and leaves densely hairy 



HAIRY GOLDEN-ROD. (S. hispida.) 

 b Stem and leaves not densely hairy 12 



12 a Lower and basal leaves 2-4 in. long, oblanceolate, rather 



blunt at apex DOWNY GOLDEN-ROD. (S. puberula.) 



b Lower and basal leaves 4-10 in. long, lanceolate to oval, 



usually pointed at apex 13 



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