146 
Curtis . — The Anatomy of the Six Epiphytic 
EXPLANATION OF THE FIGURES IN PLATES VII-XII. 
Illustrating Miss Curtis’s paper on the Anatomy of the Six Epiphytic Species of the 
New Zealand Orchidaceae. 
T. S. — transverse section; L. S. = longitudinal section. 
PLATE VII. 
Earina mucronata. 
Fig. 1. Root, T. S. : cel., centre of cylinder where the cell-walls are of cellulose; cy., central 
cylinder; ph., phloem; x., xylem ; end ., endodermis ; e., cortex; exo., exodermis; z\, velamen; 
rt.h ., root-hair. Diagrammatic. 
Fig. 2. Root, outer portion, L. S. : v., velamen ; exo., exodermis ; p.c., passage cell ; t.c., reticu- 
lately pitted cross-wall ; chi., chlorophyll, x 360. 
Fig. 3. Raphides cell, L. S., from outer portion of cortex : r., raphides; p., pit ; n., nucleus, 
x 112. 
Fig. 4. Cortical cells, root, L. S. : chi., chlorophyll; p., pit; pr ., protoplasm; n., nucleus, 
x 112. 
Fig. 5. T. S. two cutinized elements from outer region of cortex of root : lettering as before, 
x 11 2. 
Fig. 6. L. S. cutinized element; cf. Fig. 5. x 112. 
Fig. 7. Root, outer portion, T. S. : v., velamen ; s., thickening strand ; b.s., section of thickening 
strand ; p.c., passage cell ; f, fungus ; f.c., coil of fungus; r., raphides ; exo., exodermis ; K, where 
cutinization of the wall ceases, x 620. 
Fig. 8. L. S. passage cell of root ; i.v., cell of innermost row of velamen ; c, accumulation of 
fungal hyphae outside passage cell; c.n., coils of fungus with cell nucleus; p.c., passage cell; 
h., hypha passing to cortex, x 620. 
Fig. 9. Stem, T. S., outer portion: cut., cuticle; epi., epidermis; cu.c., cutinized cells; cell c ., 
cells with walls of cellulose; st ., starch; r.scl., portion of sclerenchyma cylinder; ph., phloem; 
x., xylem ; x.scl., xylem sclerenchyma. x 360. 
Fig. to. Root, portion of central cylinder, T. S. : p.c., passage cell ; p.x., protoxylem ; end., 
endodermis; peric ., pericycle ; c.c., companion cell ; s.t., sieve-tube; x., xylem; cut.w., cutinized 
wall ; cell.w., cellulose wall of elements of centre of cylinder, x 360. 
Figs. 11, 12. Small pitted tracheides of root : p., pit ; t., unpitted portion of wall, x 620. 
Fig. 13. Tracheide of root, x 620. 
Fig. 14. Reticulate tracheide of root, x 620. 
Fig. 15. L. S. endodermis of branch root : i.c., innermost row of cortex; end., endodermis; 
n. end., nucleus of endodermal cell ; p., pit; peric., pericycle. x 360. 
Fig. 16. T. S. large vascular bundle of stem: ph.scler., phloem sclerenchyma; s.t., sieve-tube; 
g.t., ground tissue, x 620. 
PLATE VIII. 
Earina mucronata ( continued ). 
Fig. 17. L. S. stem, ground tissue and tracheides: tr ., tracheides; g.t., ground tissue, x 620. 
Fig. 18. Branch and sheath, T. S. : scler., sclerenchyma ; can., canal ; gen.tis., general tissue; 
cor., cortex. Diagrammatic. 
Fig. 19. Leaf sheath, T. S. : cut., cuticle ; epi., epidermis; can., canal, x 360. 
Fig. 20. Branch, outer portion, T. S. : cor., cortex ; grd.tis ., ground tissue ; st., starch, x 360. 
Fig. 21. T. S. : two fibres from sclerenchyma cylinder of branch, x 620. 
Fig. 22. T. S. : leaf, about half-way between edge and midrib; assim.tis., assimilatory tissue ; 
r.c ., raphides cell, x 360. 
Fig. 23. T. S. : cell from lower portion of assimilatory portion of leaf, showing extensions at 
junction of two cells, x 620. 
Fig. 24. Leaf, T. S. : assim.tis., assimilatory tissue ; : m.r., midrib; r.c., cell containing 
raphides. Diagrammatic. 
