COMPOSITAE 



597 



1. S. caesia. 



2. 5. flexicaulis. 



3. 5. squarrosa._ 



N. J. Common throughout the coastal plain and locally in sandy 



places in Morris Co. 

 Pa. Bucks, Montgomery, Delaware, Philadelphia and Chester 



counties. 



Tertiary, common: Cretaceous, common: Older Formations, 

 scattered. 138-220 days. Sea level-980 ft. 



10. Solidago L.* 



Heads in short or raceme-like, axillary clusters, subtended by 

 leaf-like bracts. 

 Stem and branches terete; leaf -blades narrow, shallowly 



toothed. 

 Stem and branches angled; leaf-blades broad, deeply toothed. 

 Heads in a terminal, inconspicuously bracted panicle, thyrsus, 

 or corymb. 

 Heads in a terminal panicle or thyrsus, involucral bracts not 

 ribbed. 

 Tips of the involucral bracts spreading or recurved. 

 Tips of the involucral bracts erect or appressed. 



Inflorescence equilateral or essentially sc, the 

 heads not secund. 

 Upper stem-leaves not abruptly smaller than 

 the lower, more or less spreading. 

 Bracts of the involucre decidedly obtuse. 

 Stem copiously pubescent. 

 Ray-flowers white. 

 Ray-flowers yellow. 

 Stem glabrous or merely puberulent. 

 Bracts of the involucre 1 mm. 

 broad at the apex or more. 

 Lower leaves ciliolate on the 



margins. 

 Lower leaves not ciliolate. 

 Bracts of the involucre less than 

 1 mm. broad at the apex. 

 Bracts of the involucre acute or acutish. 

 Heads 4-5 mm. high. 

 Heads 10-12 mm. high; plant of the 

 north. 

 Upper stem leaves abruptly smaller than the 

 lower, usually appressed. 

 Inflorescence i-sided, the branches spreading or re- 

 curved; heads secund. 

 Leaf-blades pinnately veined, not 3-ribbed. 



Plants maritime, or always near the salt 



water; leaves fleshy-leathery. 

 Plants not maritime; leaves not fleshy 

 leathery. 

 * Key adapted, in part, from Dr. J. K. Small's treatment of the 

 Southeastern United States. 



4. 5. bicolor. 



5. 5. hispida. 



6. S. erecta. 



7. 5. speciosa. 



8. 5. ttliginosa. 



9. 5. puberula. 



10. 5. macro phylla. 



11. S. stricta. 



12. 5. sempervirens. 



genus in the Flora of 



