GESNEKIA PENDULINA, 



CHAP. I1L 



produced by the crossed plants, and their average number was 

 46 4 per capsule ; whilst the number in ten cleistogamic capsules 

 produced by the self-fertilised plants was 49 '4 ; or as 100 to 106 



m. GESNEEIACE^. GKSNEBIA PEKDULINA. 



In Gesneria the several parts of the flower are arranged on 

 nearly the same plan as in Digitalis,* and most or all of the 

 species are dichogamous. Plants were raised from seed sent me 

 by Fritz Miiller from South Brazil. Seven flowers were crossed 

 with pollen from a distinct plant, and produced seven capsules 

 containing by weight 3*01 grains of seeds. Seven flowers on the 

 same plants were fertilised with their own pollen, and theii 

 seven capsules contained exactly the same weight of seeds 

 Germinating seeds were planted on opposite sides of four pots 

 and when fully grown measured to the tips of their leaves. 



TABLE XXVI. 



The average height of the eight crossed plants is 32-06 inches, 

 and that of the eight self-fertilised plants 29-14; or as 100 

 to 90. 



* Dr. Ogle, ' Popular Science Review,' Jan 1870, p. 51. 



