Floral Abnormalities' 



37 



plane. Each labellum is quite similar in shape and colour mark- 

 ing to that of the normal flower. Apparently the anterior corolla 

 lobe, instead of being developed in the form of a " lip," has be- 

 come flat and petal-like, the two labella present being developed 

 alternately with this structure, and hence the position of the two 

 lateral stamens of the outer whorl. There is no evidence save 

 their position to suggest that they are due to the modification of 

 these two missing stamens. 



*2.+fc>2.*'<33 



Fjg. 3. 



A. Normal, B. and C. abnormal flowers of Glossodia major. 

 s. sepaloid, p. petaloid segments of perianth. 



Specimen C (Text fig. 3) was found by the writer at Chew- 

 ton, and, fundamentally, the abnormality is similar to the one 

 above described. In the anterior region of the flower, a flat 

 petaloid expansion is situated, the apex of which is divided into 

 three notches. At its proximal end, and in the median line, it bears 





i^w--^,t--^«j^ 



CD 



IFig. 4. — Anterior Compound Lobe of Specimen C. Enlarged. 



s. sepaloid, p. petaloid components, 

 a. appendage. 



