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08 Scientific Prnceedings, Roi/al Dublin Societj/. 



EXPLANATION OF PLATES XXV.-XXXI. 



PLATE XXV. 



' Dischidia rafflesiana, Wall. 



Fig. 1. Portion of twining shoot in flower. Natural size. 



Fig. 2. Flower with calyx, and portion of corolla removed to show column, x 9. 



Fig. 3. Longitudinal section through column ; the horizontal lines, from below 

 upwards, indicate the levels of transverse sections in figs. 5, 6, 9, 7 

 respectively. The dotted line indicates the path of pollen tubes, x 12. 



Fig. 4. Glandular cells on nectar ridge. 



Fig. 5. Transverse section of column, level of base of staminal appendages ; the 

 horizontal line indicates the direction of sections in fig. 3. x 15. 



Fig. 6. Transverse section of column, level of lower end of nectar ridges, x 15. 



Fig. 7. Tranverse section of column at the level of clips, x 15. 



Fig. 8. Part of section in fig. 7 further enlarged. 



Fig. 9. Seedling. 



Lettering : p, pollinium ; «, nectar ridge; s, staminal appendage; c, corolla; 

 k, calyx; o, ovary; w, anther wings; me, median expansion of style; 

 te, terminal expansion of style; cl, clip; b, band connecting clip to 

 pollinium ; g, gland-cells of nectary. 



PLATE XXVI. 



Fig. 1. A run of Iridomyrmex on Metragyna Idrsuta, Hav. ; the run branches near 

 upper part of the photograph ; two seedlings of D. nummularia are 

 growing in the left-hand branch. 



Fig. 2. The two forms of D. nummularia ; the upper is the exposed, the lower the 

 shade form. 



