1026 DR THOMAS R. FRASER ON STROPHANTHUS HISPIDUS. 



Fig. 6. Inflorescence, sent as a dried specimen from the Shire District of East Africa. In the expanded 

 flowers, the prolongations of the corolla-lobes are seen as long and drooping tails ; whereas in the 

 flower-buds they are seen (a) to be twisted together, and to project upwards. Natural size. 



Fig. 7. Flower-bud and fully developed flower. The contrast in appearance between the prolongations of the 

 corolla-lobes in tbe fully developed flower and in the flower-bud (a) is clearly exhibited. x 1J. 



Fig. 8. Longitudinal section of fully developed flower, showing (a) the five stamens closely surrounding the 

 pistil, xlj. 



Fig. 9. Stamen, x 4. 



Fig. 10. Pistil, showing cleft stigma and hirsute carpels, x 2. 



Plate IV. 



Fig. 1. Surface-view of stem, from Africa. Natural size. 



Fig. 2. Transverse section of stem, showing thick cork layer. Natural size. 



Fig. 3. Follicles dehiscing. Natural size. 



Fig. 4. Mature follicles, reduced one-third, showing position of the two follicles when ripe. 



Fig. 5. Transverse section of unripe follicle, from the Shire District, preserved in spirit. The line of future 

 dehiscence is indicated at x. Natural size. 



Fig. 6. Seed with comose appendage. Dorsal view of seed. Natural size. 



Fig. 7. a, ventral or parietal, and b, dorsal views of seeds. Natural size. In 7 a, the spot indicating the 

 entrance of the funiculus is shown at x. 



Fig. 8. a, dorsal, aud b, lateral view of specially large seeds. Natural size. In 8 b, the position of the funi- 

 culus is shown at x. 



Fig. 9. Magnified view of the base or root of one of the hairs of the tuft of the comose appendage of the seed. 

 x230. 



Fig. 10. a, base, and b, apex of the same hair as fig. 9, less magnified. x 52. 



Fig. 11. Small tufts or groups of the fine basal seed-hairs, which are interposed between the seeds and the inner 

 surface of the endocarp. Natural size. 



Fig. 12. a and b, magnified tufts of above hairs :12 a, showing the roots, and 12 b, the apices. x 52. 



Fig. 13. Immature seed showing the fine and relatively long hairs attached to the base of the seed. The hairs 

 have been teased out a little, in order to display them more distinctly, x 6. 



Plate V. 



Fig. 1. Transverse section of swollen portion of root of mature plant, from Africa. Same section as fig. 4, 

 Plate III., but more highly magnified, a, layer of cork tissue ; b, cork cambium ; d, very broad 

 cellular rind of food-storing cells, many containing conglomerate crystals ; e, wedge-shaped masses 

 of bast tissue, with conglomerate crystals in a few of the cells ; /, cambium layer ; and g, central 

 wood cylinder, exhibiting annual (?) growth rings. x 80. 



Fig. 2. Transverse section of one-year old stem, from Edinburgh Botanic Garden, a, cork ; b, cork cambium ; 

 c, indurated cells of cellular layer ; d, ordinary cells of cellular layer, many containing conglomerate 

 crystals, with an outer zone of shaded cells containing numerous chlorophyll corpuscles ; e, bast 

 tissue ; /, cambium ; g, wood ; h, internal bast ; *, pith. x 75. 



Fig. 3. Transverse section of outer part of old stem, from Africa. Same lettering as in fig. 2. x 75. 



Fig. 4. Longitudinal section of same stem as in fig. 3. A large portion of the inner wood region is not 

 figured. Lettering the same as in figs. 2 and 3. In the bast tissue, e, besides bast cells, a sieve 

 vessel and laticiferous cell are shown ; and in the wood, g, dotted and spiral vessels are seen at the 

 interior portion. x 300. 



Fig. 5. Transverse section of an unripe follicle, sent in spirit from the Shire District, showing the placenta 

 and immature seeds, as well as the layers of the pericarp, a. epicarp ; b, mesocarp ; c, endocarp ; 

 z, tufts of basal seed-hairs. The line of future dehiscence is faintly indicated at x. Many of the 

 seeds have fallen out. x 6. 



