16 HEREDITY AS ILLUSTRATED MY TRICHOMES. 



75.6 /* on the stem. The non-secreting a\vn-shaped trie-homes measured 

 from 218.8 /* to 316.8 p in length. 



The general relation of the triehomes of the hybrid and the pure lines of 

 Solanum are .^iven graphically in table 5. 



TAIILE "). Comparison of the triehomes of Solatium villosuin X Solatium guinense 



with those of the pure species. 



Kind. S. villosuin. The hybrid. S. guinense. 



Awn-shaped, glandular 176 n to 352 M Absent Absent. 



Giant awn-shaped .. 792 M to i . .) mm... Absent Absent. 



Big-headed.. 'v, M to 75.6 



67 . 2 MO 80 /* 67 . 2 MO 7 1 . 4 /u. 



*( 6 3 Mo 71 . } M)... 

 *(7i .4 m to 75.6 11) 



Awn-shaped, not glandular... Absent 252. 2 Mo ',16.8,11 239.4/410378/1. 



(218. 8/1 to 316.8/4! 



"The numbers in parenthesis refer to hybrids of the second generation. 



The data at hand are not sufficient either in amount or in kind to permit 

 the tracing of the influence of the pure lines on the hybrid offspring. This 

 much is apparent, however: the triehomes of the non-seerctin.u' awn-shaped 

 type which the hybrid inherits from So/a mini u'liiiit'iisi' are of full, not of 

 half six.e, as MacFarlanc found in certain hybrids investigated by him 

 where unilateral inheritance also obtained. v 



*MacKarlane, I. c. 



