1 48 Curtis . — The Anatomy of the Six Epiphytic 
Fig. 55. T. S. tissue over midrib of leaf : contents much vacuolated, x 620. 
Fig. 56. T. S. upper epidermis of leaf: cl.c ., club-shaped cell ; b.c ., basal cell; p., small round 
pits common throughout epidermis; pp., elongated pit; c., compact tissue in neighbourhood of 
basal cell, x 620. 
Bulbophyllum pygmaeum. 
Fig. 57. Root, T. S. : p.c ., passage cell ; v., velamen ; exo., exodermis ; r.w ., radial wall of 
velamen tapering in thickness towards the free surface, x 360. 
Fig. 58. Stem, T. S. : o.c., outer portion of cortex; i.c., inner portion of cortex ; fv.b ., vascular 
bundle. Diagrammatic. 
Fig. 59. Stem, T. S., outer portion : e., epidermis ; o.c., outer portion of cortex ; t.c ., reticulately 
pitted cell; i.c., inner portion of cortex, x 360. 
Fig. 60. Vascular bundle of stem, T. S. : gr.tis., ground tissue, x 620. 
Fig. 61. Pseudo-bulb, L. S. : cav ., cavity at apex; tis., general tissue; ps.b ., pseudo-bulb; 
f.v.b.s., vascular strands of stem ; fv.b.rt., vascular strands of root. Diagrammatic. 
Fig. 62. Surface view, epidermal cell of pseudo-bulb, x 360. 
Fig. 63. Surface view, spiral cell of pseudo-bulb, x 112. 
Fig. 64. Pseudo-bulb, T. S. through apical region : ps.b., pseudo-bulb; cut., cuticle of surface of 
pseudo-bulb cavity and of lower surface of leaf ; u.s., upper surface of leaf ; l.s., lower surface of leaf ; 
scl., sclerenchyma ; ph ., phloem. Diagrammatic. 
Fig. 65. T. S. vascular bundle of pseudo-bulb ; t.c ., tracheide-like cell, x 360. 
Fig. 66. General tissue of pseudo-bulb, L. S. : sp., water-storage cell, x 360. 
Pig. 67. Leaf, T. S. : p.t., region of palisade arrangement; epi., epidermis. Diagrammatic. 
PLATE XI. 
Bulbophyllum pygmaeum ( continued ). 
Fig. 68. Leaf, T. S. : pap., papilla; pr., protoplasm; pal.tis., palisade arrangement of cells; 
on the lower right-hand side three cells are figured without chlorophyll to show connexions, x 360. 
0 
Bulbophyllum tuberculatum. 
Fig. 69. Stem, outer portion, T.S. : I.c., large vacuolated cell; rhx., raphides cell; par.tis ., 
parenchymatous tissue, x 112. 
Fig. 70. T. S. vascular bundle of stem, x 620. 
Fig. 71. L. S. raphides cell of leaf. 
Fig. 72. T. S. outer portion of root : f.w., thin outer wall of velamen ; t.w., thick radial wall ; 
c., cortical cell, x 360. 
Fig. 73. Root, central cylinder, T. S. : p.c., two passage cells together; cell.peri., cellulose 
element of pericycle. x 620. 
Fig. 74. T. S. margin of leaf : e.c., projecting cell of leaf edge, x 112. 
Fig. 75. T. S. pseudo-bulb : m.c., water- storage cell, x 360. 
Fig. 76. Leaf, T.S. : m.r., midrib; u.epi., upper epidermis. Diagrammatic. 
Fig. 77. T. S. lower portion of leaf : el.c ., elongated cells between the vascular bundles ; scler., 
part of sclerenchyma sheath ; t.a., slight tubular connexion ; pass., stomatal cavity, x 360. 
Fig. 78. T. S. midrib of leaf : t.w., thickened wall of epidermis, x 360. 
Fig. 79. L. S. pseudo-bulb : m.c., water-storage cell ; inter.sp., intercellular space, x 112. 
Fig. 80. T. S. vascular bundle of pseudo-bulb : pr.e., protective element, x 360. 
Fig. 81. L. S. pseudo-bulb, near apex: pur.c,, cell containing purple, sap; m.c., water-storage 
cell, x 1 1 2. 
Sarcochilus adversus. 
Fig. 82. Stem, outer portion, T. S. : p.c., parenchyma cell; r.c., raphides cell, x 112. 
Fig. 83. T.S. cells of central ground tissue of stem, to show pits, x 360. 
Fig. 84. Stem, T. S. : gr.tis., ground tissue. Diagrammatic. 
