Fig. 2. Images of Megahertzia paleoamplexicaulis cuticle under (a–d, i) light and (e–h, j) scanning electron microscopy. Compare features shown in Fig. 3. (a) Slide P231730, showing stomata on abaxial side within small areoles. (b) Slide P231734. Note trichome base at upper left and sinuous anticlinal walls. (c) Slide P231730. Note trichome base at upper left and relatively straight anticlinal walls. (d) Slide P231730. Note striations. (e) Outer abaxial surface from leaf AN1806, showing stomatal pores and fine striations. (f) Inner abaxial cuticle from slide P231732. Note slightly granular surface mostly associated with normal pavement cells, and evidence of subsidiary cell striations. (g) Inner abaxial cuticle from leaf P257295. Note granulations. (h) Inner abaxial cuticle from an uncatalogued leaf specimen. Note granulations especially associated with pavement cells. (i) P231735, showing trichome base on adaxial side associated with 11 cells. Note striations radiating from base. (j) Inner adaxial cuticle from slide P231732, showing the position of a trichome base associated with five cells at upper left. Scale bars: (a) 200 µm; (b, c) 100 µm; (e) 50 µm; (d, i) 25 µm; (f, g, j) 20 µm; (h) 10 µm.

Published as part of Carpenter, Raymond J. & Rozefelds, Andrew C., 2023, Leaf fossils show a 40-million-year history for the Australian tropical rainforest genus Megahertzia (Proteaceae), pp. 312-321 in Australian Systematic Botany 36 (4) on page 316, DOI: 10.1071/SB23005, http://zenodo.org/record/11149306