82 OCTANDRIA MONOGYNIA. [CI. 8. 



OCTANDRIA MONOGYNIA. 



211. OENOTHERA. Evening-primrose. 



1. (E. biennis, 22. 1534. (Common E.) Leaves ovate-lanceolate, 

 flat. Stem rough, somewhat hairy. Stamens equal. Petals 

 undivided. 

 Sandy banks, W. of Eng. not native. $ . 7—9. 3 / Fl. large, 

 yell, expand, in the evening. 



212. EPIL6BIUM. Willow-herb. 

 * Fl. irregular. 



1. E. angustifolium, 28. 1947- (Rose-bay W.) Leaves scattered, 



linear-lanceolate, veiny, smooth. Petals unequal. Stamens de- 

 clining. 

 Mead, and shady pi. If. 7. 3—6/. smooth, reddish. Pet. crimson 



** Fl. reg. Stigma deeply 4-cleft. 



2. E. hirsutism, 12. 838. (Hairy W. Codlings and Cream.) Leaves 



half clasping the stem, ovate-lanceolate, hairy. Stem much 

 branched. Root creeping. 

 Watery pi. 2f . 7. Stem 4 /. downy. Fl. large, pink. 



3. E. parvifiorum, 12. 795. (Small-flowered W.) Leaves sessile, 



lanceolate, downy. Stem nearly simple, woolly. Root fibrous. 

 Watery pi. If. 7. Stem If densely woolly. Fl. \ the size of the 

 former, light purple. 



4. E. montdnum, 17. 1177. (Smooth W.) Leaves stalked, ovate, 



toothed. Stem round. 

 Hilly stony pi. If. 7. Stem slender, 1 — 2/. somewhat downy. L. 

 broad. 



*** Fl. reg. Stigma undivided. 



5. E. roseum, 10. 693. (Pale W.) Leaves stalked, ovate, toothed. 



Stem erect, obscurely quadrangular. 

 Marshy gr. rare. If . 7- Stem rather hoary. Fl. small, pale, streaked. 



6. E. tetragonum, 28. 1948. (Square-stalked W.) Leaves sessile, 



lanceolate ; minutely toothed. Stem erect, unequally quadran- 

 gular. 

 Marshes. If.. 7. Stem nearly smooth. L. narrower. Pet. cloven. 



7. E. paldstre, 5. 346. (Marsh W.) Leaves sessile, linear-lanceo- 



late, slightly toothed. Stem round. 

 Marshes. If. 7. Stem nearly smooth. L. opposite. Pet. obcordate. 



8. E. alsinifolium, 28. 2000. (Chickweed-leaved W.) Leaves stalked, 



ovate, acute, toothed. Root creeping. Stem decumbent, ob- 

 tusely quadrangular. 

 Moist mts. in the N. If . 7- R- forming tufts. Pet. rose-col. heart-sh. 



9. E. alpinum, 28, 2001. (Alpine W.) Leaves slightly stalked, 



elliptic-lanceolate, obtuse, mostly entire. Stem decumbent, tw r o- 

 or three-flowered. 



