288 



The Inheritance of Flotver Colour in Antirrhinum majus. 



By Miss M. Wheldale, Assistant Lecturer in Botany and late Bathurst 

 Student, NTewnham College, Cambridge. 



(Communicated by W. Bateson, F.E.S. Eeceived February 12, — Eead 

 February 21, 1907.) 



[Plate 4] 

 TABLE OF CONTENTS. 



PAGE 



Introduction 288 



Preliminary statement of results 288 



Details of various matings : — 



White x yellow crimson-striped 292 



„ x crimson delila 295 



„ x crimson 296 



„ x yellow 296 



Crimson delila x yellow crimson-striped 297 



„ x crimson 298 



„ xyellow 299 



Crimson x yellow crimson-striped 299 



„ xyellow 299 



Pose x other types 299 



Experiments of De Vries on Antirrhinum 300 



Introduction. 



These experiments were begun in June, 1903. The plants used were raised 

 from seed obtained from Messrs. Sutton. The course of inheritance in regard 

 to flower colour was the main object of the enquiry. 



Preliminary Statement of Results. 



There are as regards colour five easily-distinguishable types of Antirrhinum 

 flowers, namely : — 



1. White — Lips and tube pure white (PL 4, fig. 1). 



2. Yellow — Lips brimstone-yellow ; tube ivory. The ivory tube is distinctly 



recognisable from the pure white tube of the albino (fig. 2). 



3. Ivory — Lips and tube ivory. Ivory colour is due to a faint tingeing 



with yellow, and this type may be regarded as a very pale yellow, but 

 the pigment is, perhaps, distinct from that which gives the yellow 

 colour to Type 2 (fig. 3). 



4. Crimson — Lips crimson ; tube magenta (fig. 4). 



5. Magenta — Lips and tube magenta (fig. 5). 



