i 4 7 
Species of the New Zealand Orchidaceae . 
Fig. 25. T. S. stoma of leaf, x 360. 
Fig. 26. T. S. leaf edge: r.c ., raphides cell ; inter.sp., intercellular space ; scler., sclerenchyma 
group, x 360. 
Pig. 27. T. S. midrib of leaf : w.t., cells bearing a slight resemblance to water tissue, x 360. 
Earina suaveolens. 
Fig. 28. Root, T. S. outer portion : z>.,velamen; p.c., passage cell; exo., exodermis ; r., raphides ; 
fung., fungus; K, one of the usual two small cells adjoining a passage cell; t.c ., cross-wall of 
a reticulately pitted cell, x 360. 
Fig. 29. T. S. reticulately pitted cell from inner portion of cortex of root, x 620. 
Fig. 30. L. S. spirally marked cells, middle of cortex, root : sp.b., spiral band, x 112. 
Fig. 31. Raphides cell, L. S., root, x 360. 
Fig. 32. T. S. cortical cell adjoining endodermis, root, x 620. 
Fig. 33 L. S. cortical cell adjoining endodermis, root, x 360. 
Figs. 34, 35. Usual forms of tracheides, root, x 620. 
Fig. 36. T. S. central cylinder, root : end., endodermis; p,c., passage cell ; cell.peri ., cellulose- 
walled element of pericycle adjoining a passage cell ; cut.w., cells with cutinized walls, x 360. 
PLATE IX. 
Earina suaveolens {continued). 
Fig. 37. Stem, outer portion, T. S. : epi., epidermis ; fv.b.sh., sheath of a vascular bundle, 
x 11 2. 
Fig. 38. T. S. : one of larger vascular bundles of stem : st., starch ; gr.tis., ground tissue, 
x 360. 
Fig. 39. Leaf sheath, T. S. : can., canal ; r.m ., reticulately pitted cells of the general tissue, 
x 360. 
Fig. 40. Leaf sheath, L. S. : to show increase in number and size of pits from epidermis inwards, 
x 360. 
Fig. 41. Leaf, T. S. : m.r., midrib ; assim.tis., assimilatory tissue. Diagrammatic. 
Fig. 42. Leaf, midrib, T. S. : w.st., water-storage cells, x 360. 
Fig. 43. T. S. cells from lower portion of assimilatory region of leaf: to show linking of the 
cells ; no chlorophyll indicated, x 620. 
Fig. 44. Leaf, T.S., half-way towards edge: pal., palisade-like layer; r.c., ring of somewhat 
regular assimilatory cells surrounding the vascular bundle, x 360. 
Dendrobium Cunninghamii. 
Fig. 45. Root, T. S., central cylinder: end., endodermis; p.c., passage cell; peri., pericycle; 
cut.tis., cutinized tissue; ph.f., phloem fibre ; com.c., companion cell, x 620. 
Fig. 46. L. S. cortex, root, x 112. 
Fig. 47. Root, outer portion, T. S. : rt.h., root-hair; fung., fungus; rad.m., radial strands; 
pyr.c., pyramidal cells over passage cell ; b.st ., section of thickening strand, x 360. 
Fig. 48. L. S. endodermis, root : i.c., cell of cortex ; p.c., slightly elongated passage cell ; 
cell.p., cellulose-walled pericyclic element ; ord.peri., cutinized pericyclic element, x 620. 
Fig. 49. Root, T. S., centre of cylinder: cut.tis., cutinized tissue; cell.w., central cell with cellu- 
lose walls, x 620. 
Fig. 50. Stem, T. S. : scl., peripheral cylinder of sclerenchyma ; cor., cortex ; gr.tis., ground 
tissue. Diagrammatic. 
Fig. 5t. T. S. cortical cell of stem : int.sp., intercellular space, x 620. 
PLATE X. 
Dendrobium Cunninghamii ( continued ). 
Fig. 52. Leaf, T.S. : m.r., midrib; r.c., raphides'cell. Diagrammatic. 
Fig. 53. Leaf, T. S., portion between two vascular strands; t.c., cylinder of small hexagonal 
cells immediately surrounding a vascular strand ; l.cut., cuticle of lower surface, x 360. 
Fig. 54. T. S. vascular bundle of leaf, x 620. 
L 2 , 
