A GUIDE TO THE WILD FLOWERS 147 



Marsh Willow-herb no. 437 



Leaf-veins inconspicuous ; leaf margins rolled 



Willow-herb no. 438 



435. Great Willow-herb. Epilobium hirsutum. A stout 

 coarse hairy, usually branched perennial, 2-4 ft. tall. Leaves 

 toothed, mostly opposite, tapering both ends, about 2 in. 

 long. Flowers mostly terminal, rose-purple, about i in. across. 

 Pods about 2 in. long, and %o iii- ^^ diameter. In waste 

 places, about the seaports, rarely in the interior. June- 

 August. Native of Europe. Fig. 435. 



436. Willow-herb. Epilobium coloratum. Similar to No. 

 435, but shorter and with flowers about ^ the size. Pods 

 about iy2 in. long, the down brownish-red. In moist places, 

 Maine and Ontario to So. Carolina, and westward. August. 

 A related plant, E. adenocaulon, is very like E. coloratum, 

 but has sticky hairs on the flower stalks and pods, and the 

 down of the seeds is white. Also in moist places. Newfound- 

 land to No. Carolina, and westward. 



437. Marsh Willow-herb. Epilobium palustre. Not usually 

 branched and mostly about i ft. tall. Leaves opposite, with- 

 out teeth, broadest towards the middle, 1-2 in. long, the 

 margins flat, the veins prominent. Flowers about 34 in- wide, 

 pinkish- white, mostly among the upper leaves. Pod about i ^ 

 in. long. In bogs. Newfoundland to Long Island, N. Y., and 

 westward, mostly in the north. August. 



438. Willow-herb. Epilobium lineare. Not unlike No. 437, 

 but the leaves practically parallel-margined, the veins incon- 

 spicuous, and the leaf margin distinctly rolled. In swamps. 

 New Brunswick to Delaware and West Virginia, and west- 

 ward. August. Fig. 438. A related plant, E. strictum, is 

 white-hairy, has slightly toothed leaves, and grows in bogs 

 from Quebec to Virginia, and westward. 



439. Flowers white, rarely greenish or pinkish. (Nos. 440- 

 464.) 



Leaves not compound or deeply cut, or divided no. 443 



Leaves deeply cut or divided, or compound 



