APPENDIX 3. KEY TO DISPERSED CUTICLE OF LAURACEAE BASED ON CHARACTERS VISIBLE USING TLM

1. Epidermal cells papillate. 2.

1. Epidermal cells not papillate. 5.

2. More than one papilla per epidermal cell, or papillae lobed CUT-L-EEH

2. A single papilla per epidermal cell. 3.

3. Whole surface of each epidermal cell raised up as a papilla CUT-L-DFI

3. Discrete papilla in the middle of each epidermal cell. 4.

4. Massive thickening along stomatal pore/stomatal ledges CUT-L-DEJ

4. Details of stomatal ledge not visible CUT-L-ECI

5. Epidermal cell walls sinuous. 6.

5. Epidermal cell walls not sinuous. 11.

6. Massive thickening along stomatal pore/stomatal ledges CUT-L-DEC

6. Stomatal ledges thin, not massively thickened. 7.

7. Epidermal cells not buttressed CUT-L-DCA

7. Epidermal cells buttressed. 8.

8. Stomatal complexes distinctly rounded and surrounded by a thick wall. 9.

8. Stomatal complexes not distinctly rounded and surrounded by a wall of normal thickness. 10.

9 Cuticular scales butterfly-like, no distinct pattern of cells around complex CUT-L-EHE

9. Cuticular scales thin, paired epidermal cells on either side of complex CUT-L-EEB

10. Subsidiary cell periclinal walls distinctly thinner than normal epidermal cells, complex often broadly diamond-shaped CUT-L-EHD

10. Subsidiary cell periclinal walls distinctly thicker than normal epidermal cells, sometimes granular, complex often narrower than broad CUT-L-FJD

11. Cuticular scales clearly visible and butterfly-like. 12.

11. Cuticular scales not clearly butterfly-like, may be indistinct. 14.

12. Epidermal cell anticlinal walls not visible, periclinal walls very granular CUT-L-FJA

12. Epidermal cell anticlinal walls distinct, periclinal walls not granular. 13.

13. Scales smaller than the subsidiary cells CUT-L-DFA

13. Scales extending over most of subsidiary cells CUT-L-DGA

14. Scales appearing double, subsidiary cells much thinner than epidermal cells CUT-L-DBD

14. Cuticular scales narrow, or not visible. 15.

15. Trichomes persistent CUT-L-DCC

15. Trichomes deciduous. 16.

16. Stomatal complexes small-sized. 17.

16. Stomatal complexes medium-sized. 18.

17. Complex rounded, trichome bases with flanges not strongly thickened CUT-L-DBH

17. Complex polygonal, trichome bases with very thick flanges CUT-L-EEF

18. Subsidiary cells darker than epidermal cells. 19.

18. Subsidiary cells lighter than or same thickness as epidermal cells. 20.

19 Complex often flattened at polar ends, shows no sign of an anisocytic style of division in surrounding epidermal cells CUT-L-EED

19. Complexes often have a wedge-shaped outline, often shows an anisocytic style of division in surrounding epidermal cells CUT-L-EEG

20. Complexes polygonal CUT-L-ECB

20. Complexes rounded. 21.

21. Stomatal pore obviously granular, trichome bases sparse CUT-L-DGD

21. Stomatal pore not granular, trichome bases remarkably dense CUT-L-EHG