1912] Setchell: Studies in Nicotiana 7 



13. 

 (such as U. C. B. G. 05). The lower leaves are broader (pro- 

 portionally) in the middle and taper more abruptly to each end 



78. 



than do those of the Maryland (U. C. B. G. 05). The auricles 

 at the base are hardly discernible in the calycina, while they are 

 decidedly pronounced in the Maryland. While this plant is 

 distinct in habit and leaf, it is still more characteristic in its 

 flower. The flower is double of the "hose-in-hose" pattern. The 

 calyx is more or less petaloid and colored bright pink or light 

 red, as is also the corolla. Sometimes the whole calyx is petaloid 

 in color (whitish tube, pink above and deep pink limb) or it 

 may have some green in it, usually irregularly distributed. Both 

 calyx and corolla are split on one side, in most cases, and even 

 to the very base. Both are deciduous, leaving the capsule 

 naked. The lobes of the limb of both calyx and corolla are 

 broadly but deeply lobed and the lobes have long laterally curved 

 points. The capsule is more oblong than that of other members 

 of the Tahacum-groii'p. The inflorescence is more compact 

 than that of other members of the Tahacum-grouj) with the 

 exception of the members of the group surrounding N. 



angustifolia {N. TahacMm var. fruticosa Comes, not Hook., 



fis UP 



U. C. B. G. 07). In fact, this plant (U. C. B. G. 05) com- 

 bines characters of the angustifolia- and of the virginica-^edion^ 

 with its own peculiar teratological features. This plant will be 

 referred to as Nicotiana Tahacum var. calycina, or simply as 

 calycina. 



"White Tobacco" 



30 



U. C. B. G. 06. — A plant of the Ta&acwm-group with cream- 

 white flowers has been bred in our botanical garden for sev- 

 eral years, and in the pure-line cultures has retained its color 

 and other characters perfectly. It came from seed distributed 

 from the Missouri Botanical Gardens in 1905. An inquiry 

 directed to Director William Trelease in 1910 as to its source, 

 brought out the information that the original plants were 

 found by him in Mexico, growing "in that interesting 

 little village, Maltrata, at the foot of the first descent from the 

 table-land down toward Vera Cruz on the Orizaba side." He 



