1912] Setchell: Studies in Nicotiana 5 



ing it as one of the factors are discussed in a paper which it 

 is hoped may be published later. 



"Cavala" 



U. C. B. G. 05. — The seed from which the plants were raised 

 and continued under this number in our botanical garden was 

 obtained from the United States Department of Agriculture. 

 They were labelled "Cavala Tobacco" and were No. 11497 of 

 the U. S. D. A., obtained from Turkey. The habit and general 

 characters of the plant are well represented in the photograph 

 reproduced on plate 2. It is a tall plant with upper and middle 

 laterals which more or less overtop the original panicle. The 

 leaves are short, compared with those of nearly all the other 

 members of the N. T abacnm-gr oup, peculiarly and more de- 

 cidedly rugose on the upper surface as well as velvety, shaped 



22 



more like those of 07 (Nicotiana Tabacum var. macrophylla 



Comes) but more tapering towards the base and long and nar- 



22. 

 rowly decurrent. The flowers are also nearer to those of 07 



than to the others. In color, however, they are pink. The lobes 



are broad and rather shallow, but they are tipped with a short 



recurved point. The tube is slender below but is stout and 



broadly infundibuliform above. 



This plant is not to be identified with any of the typical 



varieties of either Comes or Anastasia. Nor do I identify it 



with any of the cultivated varieties figured by them. I shall 



simply call it Cavala and discuss its position and influence in 



breeding, later. The texture of the surfaces of the leaf and the 



shape and decurrence of the leaf make it a desirable plant in 



crossing. 



"Maryland" 



78 



U. C. B. G. 05. — The seed from which the stock of plants 

 designated by this number has been obtained was distributed 

 by the United States Department of Agriculture in 1905, and 

 designated as "Maryland," with the identifying number "205- 

 20-7." In habit, as well as other characters, it is decidedly 

 different from the two varieties just described. It is of some- 



