loo MICROSCOPICAL RESEARCH 



PLATE XV. 



FLORAL STRUCTUEE. 



Fig. 52. Transverse section. Flower Bud of Poppy. ' Papaver 

 rlioeas ' x 15 dia. Fixed in 92% Alcohol (Celloidinized 

 preparation). Stained with Borax Carmine. 1. Calyx. 

 2. Corolla. 3. Anthers containing pollen. 4. Base of 

 Stigmatic Cap. 5. Wall of Ovary. 6. Placenta. 



Fig. 53. Transverse section. Flower Bud of Wallflower. ' Cheiran- 

 thus Cheiri ' x 25 dia. Fixed in 92% Alcohol. Stained with 

 Borax Carmine (Celloidinized preparation). 1. Calyx. 



2. Corolla. 3. Anthers. 4. Capsule (Silique). 



Fig. 54. Transverse section. Flower Bud of Dandelion. 'Taraxacum 

 officianalis ' x 35 dia. Fixed with Chromo-Acetic solution 

 (Celloidinized preparation). Stained with Borax Carmine. 

 1. Bracts of the involucrum. 2. Pappus (modified calyx). 

 3 Tubular corolla. 4. Five ' syngenesious ' anthers. 5. Style 

 with three vascular bundles. 



Fig. 55. Transverse section. Flower Bud of Iris. ' Iris Germanica ' 

 X 25 dia. Fixed with 92% Alcohol (Celloidinized prepara- 

 tion). Stained with Borax Carmine. 1. Calyx. 2. Corolla. 



3. Petaloid stigmas. 4. Anthers. 5. Fringe of hairs running 

 longitudinally along the median plane of each sepal. 



