The Natural History of Chautauqua 



CHICKORY FAMILY 



214. Chickory (Cichorium intybus) ; July-Oct. ; roadsides and waste 



places. 



215. Dandelion (Taraxacum taraxacum)', Jan.^-Dec.; abundant every- 



where. Europe. 



216. Sow-Thistle (Sonchus oleraceus) ; May-Nov. ; fields and waste 



places. Europe. 



217. Prickly Lettuce (Lactuca scariola) ; Aug.-Sept. ; fields and waste 



places; from Europe. 



2 1 8. Wild Lettuce (L. canadensis) ; June-Nov. ; moist, open places. 



219. Arrow-leaved Lettuce (L. sagittifolia) ; July-Sept; in dry, open 



soil. 



220. Orange Hawkweed (Heiracium aurantiacum) ; June-Sept.; 



fields, woods, etc. ; a serious pest ; from Europe. 



221. Panicled Hawkweed (H. paniculatum) ; July-Sept.; dry woods. 



222. Canada Hawkweed (H. canadense) ; July-Sept.; dry woods and 



thickets. 



223. White Lettuce (Nabulus ablus) ; Aug.-Sept.; in woods. 



RAGWEED FAMILY 



224. Ragweed (Ambrosia artemisiae folia) ; July-Oct.; dry soil; plenti- 



ful. 



225. Great Ragweed (A. trifida) ; July-Oct.; moist soil. 



226. Spiney Cocklebur (Xanthium spinosum) ; Aug.-Nov. ; waste 



places; from Europe. 



THISTLE FAMILY 



227. Joe-Pye Weed (Eupatorium purpureum) ; Aug.-Sept.; moist 



places. 



228. Spotted Joe-Pye Weed (E. maculatum) ; Aug.-Sept.; moist soil. 



229. Boneset (E. perfoliatum) ; July-Sept.; in wet places. 



230. White Snake-root (Eupatorium ageratoides) ; July-Nov. ; rich 



woods. 



231. Silver Goldenrod (Solidago bicolor) ; July-Sept.; dry soil. 



232. Hairy Goldenrod (S. hispida) ; Aug.-Oct.; in dry soil. 



233. Ohio Goldenrod (S. ohioensis) ; Aug.-Sept. ; in moist soil. 



Numerous other species of Goldenrod occur in the region. 



234. Crook-stemmed Aster (Aster prenanthoides) ; Aug.-Oct.; moist 



soil. 



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