244° BOTANICAL GAZETTE [MARCH 
lowest larger and petioled: flowers few; calyx teeth much shorter than the 
tube, about equalling the 4-celled (or sometimes 3-celled ?) capsule: tube of 
the corolla barely an inch long, the 5-lobed limb an inch and a half or more in 
diameter; its lobes ovate and obtusish, veiny. 
Oregon, and cultivated by the Indians from Oregon to Missouri; their 
most prized tobacco plant. Perhaps a derivative of the preceding species. 
Three sets of seed, purporting to be this species, two from Italy 
and one from California, were grown. The plants obtained were 
Fic. 1.—At left, Nicotiana quadrivalvis Pursh; at right, N. Bigelovii Watson; 
young plants. ; 
alike in every detail within the limits of fluctuating variation. 
One selection has bred true for four generations. They differed 
from the above description in only one character. The lower 
leaves could hardly be called petioled, although they tapered 
almost to a petiole. The plants when grown in a normal fertile 
soil always had a large number of capsules with four cells. There 
were individual capsules, however, with three and sometimes even 
two cells on the same plants. This feature is evidently a physio- 
logical variation, for when grown in small pots in the greenhouse 
’ This statement, overlooked by me until the conclusion of the experiments, 
refers to N. Bigelovii. 
