PROF. H. M. WAKD AND MTSS E. DALE ON CRATEROSTTGAIA PUMILU^F. 355 



Fig. 6. A flower from which the corolla has fallen, showing persistent calyx and style. 



Fig. 7. Vertical section of ovary in the antero-posterior plane, showing superior position, large axile 



placenta, and terminal style. At (b) a lateral, and (c) front view of lipped stigma. 

 Fig. 8. Corolla dissected open from above and the posterior lobe removed ; natural size. 

 Fig. 9. Corolla laid open from below, magnified. 

 Fig. 10. Transverse section of ovary and calyx, magnified. 

 Fig. 11. A young capsule, projecting beyond the persistent calyx. 

 Fig. 12. Ripe capsule opening by two valves, septicidal and septifragal. 

 Fig. 13. Ripe seed, showing the pitting. 

 Fig. 14. Longitudinal median section of seed, showing nearly straight embryo in axis of endosperm. 



Plate XXXV. 



Fig. 15. Transverse section of root, showing central stele, and cortex with the large regular intercellular 



spaces filled with the red pigment. The two outer layers have neither spaces nor pigment. 



Low power. 

 J^g. 16. Portion of above, more highly magnified (Zeiss D), showing pigment lining walls of spaces. 

 Fig. 17. Transverse section of stele of root, with six xylem-strands, endodermis, pericycle, &c., of 



normal type. 

 Fig. 18. Radial longitudinal section of outer root-cortex and piliferous layer, showing intercellular 



spaces and pigment— c/. fig. 19— and the peculiarly thickened outer cell-walls of some of 



the cells of the piliferous layer. 

 Fig. 19. Tangential oblique section of cortex of root, showing peculiar appearance caused by the 



arrangement of the intercellular spaces. 

 Fig. 20. Transverse section of the rhizome, showing central stele, origin of roots, and oblique sections 



of vascular strands to the leaves. The intercellular spaces of the outer cortex are filled with 



the red pigment, except just below the epidermis. 

 Fig. 21. Part of transverse section through lamina of leaf, showing differences between upper and lower 



epidermis, and the feebly differentiated palisade-tissue. Stomata and glands occur both 



above and below. 

 Fig. 22. Transverse section through base of leaf, showing the pigmented intercellular spaces in lower 



portion only. 

 Fig. 23. A stoma in vertical section. 

 Fig. 24. Two of the glands, seen from above. 



Fig. 25. A gland and its pit in vertical section : in one of the epidermal cells a cystolith-like body. 

 Fig. 26. Section of epidermis, showing two cystoliths. 

 Fig. 27. Section across a small vein of leaf. 

 Fig. 28. Longitudinal section of small vein of leaf, showing the peculiar short tracheidal elements with 



shelf -like thickenings. 



SECOND SEJITES. — BOTANY, VOL. V. 3 h 



