I02 MICROSCOPICAL RESEARCH 



PLATE XVI. 

 FLORAL STRTJCTUEE. 



Fig. 56. Trajisverse section. Flower Bud of Lily. ' Lilium croceum ' 

 X 10 dia. Fixed with Chromo-Acetic solution. Stained 

 witk Borax Carmine. (Celloidinised preparation.) 1. Calyx. 



2. Corolla. 3. Anthers. 4. Ovary. 



Fig. 57. Transverse section of an Anther Lobe of Lily. 'Lilium 

 crooeum ' x 60 dia. Fixed with Chromo-Acetic solution. 

 Stained with Brazilin. 1. Fibrous layer. 2. Zone of 

 smaller nucleated cells. 3. Tapetal layer. 4. Pollen grains. 



Fig. 58. Transverse section. Ovary of Lily. 'Lilium croceum' 

 X 75 dia. Fixed with Chromo-Acetic solution. Stained 

 with Brazilin. 1. Outer wall of ovary. 2. Inner wall. 



3. Cavity of ovary. 4. Embryo-sac. 5. Central axis. 



Fig. 59. Longitudinal median section. Catkin of Sallow. ' Salix 

 caproea ' x 15 dia. Fixed with Chromo-Acetic solution. 

 Stained with Aniline-picrate and Gossypimine. 1. Central 

 axis (pith). 2. Vascular system. 3. Anthers. 4. Floral 

 Scales (bracts). 5. Nectary. 



