256 Wilson . — The Mucilage - and other 
EXPLANATION OF FIGURES IN PLATES X, XI, 
XII, XIII. 
Illustrating Dr. Wilson’s paper on the Mucilage- and other Glands 
of the Plumbagineae. 
PLATE X. 
Fig. 1. A branch of Statice rosea , nat. size, m, mucilage bathing the bud ; 
m' , semi-hardened mass of mucilage, secreted by the axillary glands. 
Fig. 2. Hardened mucilage-cast of a portion of the leaf-surface of S. rosea, 
ig , intermediate gland, • 1 3 mm. in diameter. 
Fig. 3. The apex of a branch of Statice fruticans , nat. size. tr , axillary 
trough. 
Fig. 4. Epidermis of the apical portion of rachis of Statice pruinosa. i, ii, iii, 
iv, v, progressive stages of development of the rosette of cells surrounding the 
Mettenian glands '. The furthest developed (v) is -5 mm. in diameter. 
Fig. 5. Epidermis of rachis of Statice chrysocomia. The numerals signify 
progressive stages of modification. The whole elevated mass in iii. is -26 mm. 
in diameter. 
Fig. 6. Mettenian gland (chalk-secreting) on the leaf of S. rosea , having the 
lower edge bounded by a cushion of elevated cells *4 mm. in breadth. 
Fig. 7. A similar modification of cells on the upper side of the leaf of Statice 
articulata , breadth .5 mm. 
Fig. 8. The same in Statice cor data, -35 mm. in diameter. 
Fig. 9. An average-sized leaf of Limoniastrum monopet alum , nat. size. 
Fig. 10. Chalk-scales, Is, on the leaf of Statice macrorrhabdos. Enlarged. 
Fig. 11. Intermediate gland on the leaf of Statice puberula. h, tuberculated 
hair, 1.3 mm. in length. 
PLATE XI. 
Fig. 12. Emergence on the margin of the leaf of Plumbago europaea. g, 
Mettenian gland. Enlarged. 
Fig. 12 a. Apex of the same. 
Figs. 13, 14. Stages of development of Mettenian glands on the margin^of the 
leaf of Plumbago micrantha. 
Fig. 15. A group of Mettenian and intermediate glands on a young leaf of 
P. micrantha (basal cells only figured). 
Fig. 16. Modified gland, replacing Mettenian, in Aegialitis annulata . Outer 
circle, -2 mm. in diameter ; inner circle (mouth of gland), -i mm. 
Fig. 17. Leaf of Statice puberula , nat. size. 
1 The walls of the glandular cells are almost invariably portrayed as somewhat 
swollen in preparation. 
