COMPOSITE FAMILY. Comoositae. 



annuus 



and cross-fertilization takes place by the agency of in- 

 sects or the wind. The smaller bees {Halictus), the 

 bumblebee (Bombus vagans), and the smaller butterflies 

 are constant visitors. 1-2 feet high. Common in dry 

 or sandy meadows. Me. , west to S. Dak. , and southward. 

 The common garden sunflower ; an an- 

 Helianthus ^^^^ ^i,.j^ generally three-ribbed and heart- 

 shaped leaves, and golden yellow flowers, 

 1-10 inches broad. 2-12 feet high. Everywhere. 



^ „ ^. A tall species with a rough dull magenta 



Tall Sunflower ^ lui*. i ^ -, 



Helionthus ^^^"^ ^"^ rough, bright green, lance-shaped 

 giganteus leaves, i3ointed and finely toothed, nearly 



Yellow stemless, the upper ones quite stemless, 



August- ^jj(j ^Y\ growing alternatelv, but rarely 



September ^ . ^ .^ , l,'. ,. . ^ ; 



some growing oppositeh'. The light yel- 

 low flowers about 2 inches broad, with 10-20 rays ; the 

 disc dull yellow, with perfect florets, and the rays neu- 

 tral, that is, without stamens or pistil. 3-12 feet high. 

 Common in swamps and on the borders of wet meadows, 

 from Me., south, and west to Neb. 



A southerly species with many very 



c ^., small flowers 1-1 inch broad. The stem 



Sunflower ~ 



Helianthus slender and generally branched ; leaves 



parviflorus mostly Opposite, broad lance-shaped. 



Yellow toothed, rough, and short-stemmed. Flow- 



l"'r .- ers with 5-10 yellow rays. 3-6 feet high. 



September ^ . /. , , , , , . 



Common in thickets and on the borders of 



woods. Pa. , south to Ga. , and west to Mo. 



Woodland ^ slender, smooth-stemmed species (a 



Sunflower trifle fine-hairy above) w4th opposite lance- 



HeUanthus shaped, toothed, roughish, three-ribbed, 



drvaricatus ^^^ nearly or quite stemless leaves 3-7 



inches long. The yellow flowers, 2 inches broad, are few 



or solitar3^ 2-5 feet high. Common in thickets and on 



borders of woods. Me., south, and west to Neb. 



A species similar in aspect, color, situa- 



ftflZoms^ tion, and time of bloom ; but the stem 



very smooth below, and often with a bloom ; 



the leaves rough above, and pale (sometimes minuteh' 



hairy) beneath. Flowers with 5-15 rays. 3-6 feet high. 



Me., south to Ga., but mostl}^ west to Minn, and Ark. 



