37 2 Hemsley . — On a Drift-seed ( Ipomoea tuber osa). 
EXPLANATION OF FIGURES IN PLATE XXIV, 
Illustrating Mr. Hemsley’s paper on Ipomoea tuberosa. 
Fig. i. A ripe capsule subtended by the enlarged somewhat lignified sepals. 
Fig. 2. A cluster of four seeds seen from above. 
Fig. 3. „ ,, below. 
Fig. 4. A single seed. 
Fig. 5. A cross-section of the same showing the folded cotyledons embedded in 
the albumen, and the central cavity. 
Fig. 6. A single seed, where only one is developed in a capsule, seen almost 
horizontally. 
Fig. 7. The same seen from below. 
Fig. 8. The same in cross-section. 
Figures 5 and 8 enlarged ; the rest natural size. 
