GENUS 6. 



EVENING-PRIMROSE FAMILY. 



59' 



Densely pubescent throughout ; leaves sessile. 6. E. strictum. 



Glandular-pubescent above ; leaves petioled. 7. E. paniculatum. 



Leaves lanceolate or ovate, serrate. 



Leaves lanceolate, acute or acuminate ; stems solitary. 



Seeds obconic, beakless ; coma reddish ; leaves narrowly lanceolate. 



8. E. coloratum. 

 Seeds ellipsoid, short-beaked ; coma white ; leaves oblong-lanceolate to ovate-lanceolate. 



9. E. adenocaulon. 

 Leaves ovate, thin, obtuse, or the upper acutish ; stems tufted. 10. E. Hornemanni. 



i. Epilobium hirsutum L. Great Hairy 

 Willow-herb. Fig. 3027. 



Epilobium hirsutum L. Sp. PI. 347. 1753. 



Stout, branched, 2-4 high, softly hirsute-pubes- 

 cent, spreading by subterranean shoots. Leaves 

 lanceolate or oblong-lanceolate, usually opposite, 

 sessile and often clasping at the base, acute at the 

 apex, sharply serrulate, i'-3' long, 4"-6" wide, thin, 

 pubescent on both sides; flowers axillary, erect, rose- 

 purple, about i' broad; petals notched, pubescent at 

 the base within ; stigma deeply 4-lobed ; capsules 

 stalked, 2'-$' long, about i" thick, pubescent ; seeds 

 about \" long, smooth; coma whitish. 



In waste places, Maine to central New York, Ontario, 

 and in ballast about the sea-ports. Adventive or natural- 

 ized from Europe. English names, codlins-artd-cream, 

 fiddle-grass. Apple-, gooseberry- or cherry-pie [smell]. 

 June-Sept. 



2. Epilobium alpinum L. Alpine Willow-herb. 

 Fig. 3028 



Epilobium alpinum L. Sp. PI. 348. 1753. 



E. lactiflorum Haussk. Oest. Bot. Zeit. 29: 89. 1879. 



Slender, weak, tufted, glabrous or nearly so, 3'-i2' 

 high. Leaves thin, pale, petioled, opposite, or the upper 

 alternate, denticulate or entire, obtuse or obtusish at the 

 apex, narrowed at the base, 6"-2o" long, 2"-8" wide ; 

 flowers few, axillary, nearly erect, white or pink, 2"-$" 

 broad, petals notched; stigma nearly entire; capsules 

 slender-stalked, i'-2' long, about \" thick, glabrous; 

 seeds smooth, narrowed into a beak ; coma whitish. 



Labrador to Alaska, south to the White Mountains of 

 New Hampshire, Colorado, Utah and Oregon. Also in 

 Europe and Asia. Summer. 



3. Epilobium anagallidifolium Lam. Pimper- 

 nel Willow-herb. Fig. 3029. 



Epilobium anagallidifolium Lam. Encycl. 2: 376. 1786. 



Low, usually tufted, 2'-8' high, resembling the pre- 

 ceding species but generally smaller. Stems commonly 

 pubescent in lines and nodding at the apex; leaves 

 oblong or narrowly ovate, entire or nearly so, obtuse 

 at the apex, narrowed at the base into a short petiole, 

 5"-io" long, \\"-'2\" wide; flowers few, axillary, clus- 

 tered at the apex, pink or violet-purple, nodding, about 

 2j" broad ; stigma entire ; capsule slender-peduncled, 

 glabrous, purplish, about i' long, \" wide; seeds smooth, 

 short-beaked, about i" long; coma dingy-white. 



Labrador, Quebec, and through arctic America to Alaska, 

 south in the Rocky Mountains to Nevada. Recorded from 

 the mountains of New York and New England. Also in 

 Europe and Asia. Summer. 



