PLATE XXXVII. 



IGS. 



2. Euphorbia Cyparissias (Cypress Spurge). Reappear- 



ance of sepals (s) below ovary. (After Schmitz.) 

 p. 66. 



3. Petunia hybrida. Serial dedoublement of stamen- 



rudiments (st) to form the double flower. Longitu- 

 dinal section of half the flower-bud. (After Goebel.) 

 p. 78. 



4. Butomus umbellatus (Flowering Bush). Flower show- 



ing extra epipetalous whorl of three stamens, of 

 which two have become united with stamens of the 

 normal whorl. (After Celakovsky.) p. 80. 

 6. Odontoglossum grande (an Orchid). Fig. 5. — Peloric 

 flower with labellum in form of ordinary petal, and 

 stamens A 2 and A 3 of the outer whorl present and 

 fertile (pp. 82 and 94). Fig. 6. — Column of same 

 flower showing three fertile anthers and three 

 rostella. s l , posterior sepal ; lb, modified labellum. 

 (After Schlechter and Fischer.) pp. 82 and 94. 



