168 MEMOIRS FEOM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 



Leaflets several-toothed all around except the lowermost portion. 



Sepals and bractlets ovate. 10. F. truneata. 



Sepals and bractlets lanceolate. 

 Fruit hemispheric. 



Plant more or less glaucous ; petals generally orbicular and twice 



as long as the sepals. 11. F. platypetala. 



Plant not glaucous ; petals elliptic, generally exceeding the sepals 

 by one-half. 12. F. Virginiana. 



Fruit oblong-conic. IS. F. Canadensis. 



Pubescence of the scape and petioles appressed or slightly spreading ; achenes in pits. 

 Plants not glaucous. 



Leaflets generally over 3 cm. long, very veiny beneath. 14. F. prolifica. 



Leaflets generally 1-3 .cm. long, not very veiny ; runners few. 



Scape and petioles densely grayish-strigose ; western. 15. F. pumila. 



Scape and petioles slightly hairy, glabrate ; eastern. 16. F. Terrae-Novae. 



Plants more or less glaucous. 

 Leaves rather thin. 



Leaflets obovate ; scape several-flowered. 17. F. glauea. 



Leaflets oblong-cuneate ; scape 1-4-flowered. 18. J^. pauciflora. 



Leaves rather thick, firm ; leaflets oblong-cuneate. 19. F. fima. 



Flowers pinkish, nodding from the beginning ; achenes superflcial. 20. F. Hellerl. 



I. Fragaria cuneifolia Nutt. 



Fragaria Chilensis var. Torr. & Gray, Fl. N. Am. 1: 448. 1840. Not Molina. 



Fragaria cuneifolia Nutt. ibid., as synonym; Howell, Fl. N. W. Am. 1: 174. 



Rootstock short but not very thick. Leaves rather few, firm and somewhat coria- 

 ceous, but not as thick as in F. Chiloensis and scarcely reticulate, silky above when 

 young, glabrate in age, densely silky and shghtly tomentulose beneath ; stipules lanceo- 

 late, brown, scarious ; petioles slender, covered with long silk}'' spreading or reflexed 

 hairs ; leaflets cuneate to obovate, obtuse or truncate, toothed only at the apex with the 

 middle tooth often smaller, 1.5-4 cm. long, subsessile or the middle one slightly peti- 

 oled ; the lateral ones only slightly oblique. Runners long and slender. Scape slender, 

 less than 1 dm. high, with spreading or reflexed long hairs, few-flowered, without folia- 

 ceous bracts. Flowers 1.5-2 cm. in diameter; bractlets and sepals lanceolate; petals ob- 

 ovate-cuneate, a third longer than the sepals. Fruit hemispheric, about 1 cm. in di- 

 ameter, more villous than in the other species ; achenes superficial, or set in shallow pits. 



F. cuneifolia is nearest related to F. Chiloensis and has generally been included in that 

 species, but differs by its smaller flowers, its more hairy fruit, its narrow and scarcely 

 obHque leaflets, its slender habit and more scanty and more spreading hairs on the scape 



