185b. Leaves rough on both sides, elongated =Sunflower, Helianthus maximiliani.= 186a. Leaves sessile (5-15 dm. high) --187. 186b. Leaves petioled, or narrowed at the base into a petiole (5-30 dm. high) --189. 187a. Leaves wedge-shape at the base =Sunflower, Helianthus doronicoides.= 187b. Leaves rounded at the base --188. 188a. Stem glabrous or nearly so =Sunflower, Helianthus divaricatus.= 188b. Stem densely and softly hirsute =Sunflower, Helianthus mollis.= 189a. Stems rough, pubescent, or hispid --190. 189b. Stems glabrous or nearly so --193. 190a. Leaves narrowly lanceolate, more than 5 times as long as wide =Sunflower, Helianthus giganteus var. subtuberosus.= 190b. Leaves ovate-lanceolate, not more than 4 times as long as wide --191. 191a. Leaves rounded at base, above the petiole =Sunflower, Helianthus hirsutus.= 191b. Leaves narrowed to the base --192. 192a. Bracts of the involucre spreading =Jerusalem Artichoke, Helianthus tuberosus.= 192b. Bracts all appressed =Sunflower, Helianthus laetiflorus.= 193a. Heads 3 cm. wide or less, including the rays =Sunflower, Helianthus microcephalus.= 193b. Heads 4 cm. wide or more, including the rays --194. 194a. Leaves narrowed at the base into a winged petiole --195. 194b. Petiole slender, not winged =Sunflower, Helianthus decapetalus.= 195a. Leaves green on both sides; bracts longer than the disk =Sunflower, Helianthus tracheliifolius.= 195b. Leaves paler below than above; bracts not longer than the disk --196. 196a. Leaves minutely pubescent beneath =Sunflower, Helianthus strumosus.= 196b. Leaves conspicuously downy beneath =Sunflower, Helianthus strumosus var. mollis.= 197a. Leaves all basal, the flowers on scaly stalks (2-8 dm. high; flowers whitish, in spring) =Coltsfoot, Petasites palmata.= 197b. Stem-leaves present, opposite --198. 197c. Stem-leaves present, alternate --200. 198a. Leaves ovate, dentate, 2-6 cm. long (2-8 dm. high; summer) (Galinsoga) --199. 198b. Leaves lobed, 10-25 cm. long --113b. 199a. Pubescence sparse, appressed =Galinsoga, Galinsoga parviflora.= 199b. Pubescence abundant, spreading =Galinsoga, Galinsoga parviflora var. hispida.= 200a. Leaves dissected or deeply lobed or pinnatifid; pappus never capillary; rays white to pink (3-10 dm. high; summer and autumn) --201. 200b. Leaves entire or serrate --206. 201a. Heads 4-8 mm. wide (Yarrow) --202.