298 



The Pedigree Families. 



MUTANTS ARISING FROM O. SCINTILLANS. 



67 



That is, rougiily 1 % or about as mucli as in the case of 

 O. Lainarckiana itself. 



A parahel resuk is got with crossings. From these 

 there arise the two parent forms and very often O. La- 

 inarckiana itself, even when it was not one of the parents.^ 

 But other mutations occur as well, as the following in- 

 stances will show. 



MUTANTS ARISING FROM THE CROSS O. LAMARCKIANA X O. 



NANELLA. 



RUBRI- ELLIP- 



NUMBER OF 

 DATE _ ALBIDA 



SEEDLINGS 



LATA OBLONGA 



NERVIS TICA 



7 

 5 

 2 

 3 



5 



20 



12 



5 



1 



8283 1 22 38 



Altogether 64 mutants, or nearly 1 %. 



' See Ber. d. d. Bot. Gesellschaft, Bd. XVIII, igoo, Heft X, 

 P- 435- 



