A GUIDE TO THE WILD FLOWERS 297 



toothed. Flowers orange or orange-red, the heads usually 

 2-6. In moist places, Southern Ontario and Mass. to Georgia, 

 and westward. June-October. Fig. 912. 



913. Krigia. Krigia virginica. Not unlike No. 912, but an- 

 nual, about half the height, with a single head of yellow 

 flowers, and the leaves all basal and deeply cut, the lobes 

 turned backward, narrowed into winged stalks. In dry sandy 

 soil, Maine and Ontario to Florida, and westward. May- 

 August. 



914. Dandelion. Lcontodon Taraxacum. {Taraxacum of- 

 ficinale.) A bitter-leaved perennial with basal leaves and a 

 solitary yellow flower head at the end of a hollow stalk. 

 Leaves divided, the segments sharp pointed. A weed nearly 

 throughout the world. March-November. Fig. 914. 



915. Flower heads mostly ^ in. wide or less, often much 

 less. (Daisy family concluded.) 



Tall, mostly branching herbs, 2^ ft. high or more 

 Flower heads erect 



Flowers bluish-white Blue Lettuce no. 916 



Flowers yellow or orange 



Plants smooth throughout Wild Lettuce no. 917 



Leaves hairy on the mid-rib Wood Lettuce no. 918 



Flower heads nodding 



Flower heads very numerous White Lettuce no. 919 



Flower heads not numerous, commonly few in each cluster 



Rattlesnake-root no. 920 



Lower, and often unbranched plants, 6-24 in. high; leaves mostly 

 basal, rarely a few on the stem 

 Leaves wholly basal 

 Flowers yellow 

 Leaves green, not purple-veined . . Fall Dandelion no. 921 



Leaves purple-veined Rattlesnake Weed no. 922 



Flowers orange-red Orange Hawkweed no. 923 



Some or all the leaves on the stem 



Leaves basal and on the stem ; stem usually hairy 



Hairy Hawkweed no. 924 



Leaves essentially all on the stem ; stem smooth or with few 

 hairs Canada Hawkweed no. 925 



