A GUIDE TO THE WILD FLOWERS 227 



latecl species, H. ciliolata, has the margins of the basal leaves 

 finely hairy. It grows on moist rocks from Ontario to West 

 Virginia, and westward. 



695. Plants with conspicuously milky juice. 



Flowers tubular, without an obvious crown. . .Dogbanes no, 705 



Flowers with an obvious crown (see Fig. 697-704) 



Milkweeds no. 696 



696. MILKWEEDS. ASCLEPIAS. 



Tall rather coarse wholly American herbs with a milky 

 juice and opposite clustered or alternate leaves (in our 

 species) that are toothless, but sometimes wavy-margined. 

 Flowers in dense close terminal or lateral clusters thiit are 

 umbel-like (see No. 703). Corolla deeply 5-parted, the seg- 

 ments pointing downward at flowering time, and above these 

 a crown of 5 hooded structures. Fruit a long, somewhat 

 swollen pod, packed with silky tailed seeds. (Asclepiadaceae.) 

 See Nos. 200 and 201 for two trailing plants of this family. 



Flowers orange ; leaves nearly all alternate 



Butterfly-weed no. 697 



Flowers not orange 

 Flowers red or purple ; leaves opposite 



Flowers about 1/2 in. wide, the crown about J4 in- hiRh 



Purple Milkweed no. 698 



Flowers about J4 i"- wide, the crown about % in. high 



Swamp Milkweed no. 699 



Flowers greenish, purplish, yellowish, or white 

 Leaves of an oblong or oval type 

 Plants smooth 



Leaves wavy-margined, almost stalkless 



Milkweed no. 700 



Leaves. not wavy-margined, obviously stalked 



Leaves opposite Poke Milkweed no. 701 



Leaves 4 at a joint Milkweed no. 702 



Plants with leaves white woolly on the under side 



Common Milkweed no. 703 



L^ves narrowly linear in clusters of 3-7 



Whorled Milkweed no. 704 



