VOL.. II.] 



EVENING-PRIMROSE FAMILY 



4. Epilobium palustre I,. Marsh or 

 Swamp Willow-herb. (Fig. 2571.) 



Epilobium palustre L. Sp. PI. 348. 1753. 



Epilobium oliganthum Michx. Fl. Bor. Am. i: 223. 1803. 



Erect, slender, usually simple, V-\W high, peren- 

 nial by subterranean shoots, canescent above with in- 

 curved hairs. Leaves mostly opposite, sessile, oblong, 

 or lanceolate-oblong, obtuse or subtruncate at the 

 apex, i / -2 / long, i // -2^ // wide, erect or ascending, 

 distinctly veined; flowers few in the upper axils, pink 

 or whitish, usually nodding at first, 2 // ~3 // broad; 

 stigma entire or nearly so; fruiting peduncles slender; 

 capsules i / -2 / long, slightly more than y z " thick, 

 canescent; seeds about Yz" long, a little papillose, 

 translucent, the apex scarcely narrowed; coma pale. 



In bogs, New Brunswick to Alaska, south to the White 

 Mountains, Ontario, Colorado and Washington. Also in 

 Europe and Asia. Summer. 



Epilobium lineare Muhl. Linear-leaved Willow-herb. (Fig. 2572.) 



Epilobium lineare Muhl. Cat. 39. 1813. 

 Epilobium palustre var. lineare A. Gray, Man. Ed. 

 2, 130. 1856. 



Slender, erect, canescent throughout with in- 

 curved hairs, i-2 high, at length much branched, 

 perennial by subterranean shoots. Leaves linear 

 or linear-lanceolate, mostly short-petioled, oppo- 

 site or alternate, erect or ascending, acute at both 

 ends, entire or very nearly so, i / -2 / long, j // -2 // 

 wide, the veins obscure; flowers few or numerous 

 in the upper axils, erect, pink or whitish, 2"- 

 4" broad; stigma entire or slightly notched; pedi- 

 cels mostly slender; capsules about 2' long, finely 

 canescent; seeds less than \" long, slightly papil- 

 lose, the coma dingy. 



In swamps, New Brunswick to Delaware, west to 

 British Columbia, the Indian Territory and Wyoming. 

 July-Sept. Sometimes produces bulblets near the 

 base of the stem. 



6. Epilobium strictum Muhl. 



Downy or Soft Willow-herb. 



(Fig. 2573.) 



Epilobium strictum Muhl. Cat. 39. 1813. 

 Epilobium molle Torr. Fl. U. S. i: 393. 1824. 

 Not Lam. 1805. 



Erect, usually much branched, i-3 high, 

 densely pubescent with whitish somewhat 

 spreading hairs, perennial by subterranean 

 shoots. Leaves sessile, ascending, broader 

 than those of the preceding species, short- 

 lanceolate, obtuse or obtusish, 9 // -2o // long, 

 2 // -4 // wide, alternate or opposite, mostly en- 

 tire, evidently veined; flowers in the upper 

 axils, pink or whitish, about 2" broad; stigma 

 entire or nearly so; capsules 2 // -3 // long, 

 nearly i // thick, short-peduncled, canescent; 

 seeds obconic, papillose; coma dingy. 



Bogs, Maine to western Ontario and Minnesota, 

 south to Virginia and Illinois. July-Sept. 



