FIGURE 5 in Molecular and Morphological Diversity of Lithothamnion spp. (Hapalidiales, Rhodophyta) from Deepwater Rhodolith Beds in the Northwestern Gulf of Mexico

FIGURE 5. Lithothamnion sp. A. Specimen LAF6549. A. Dissecting microscope view showing habit of conceptacles (arrows) on thallus surface. Scale bar 1 mm. Inset: Thallus habit growing on autogenic rhodolith. Scale bar 10 mm. B. Vertical fracture through thallus showing hypothallium (lower bracket) with rectangular shaped cells (arrows) and perithallium (upper bracket) with cell fusions (small arrows). Scale bar 95 μm. C. Surface view and section of thallus showing epithallial cells (arrows) and cell fusion (F). Scale bar 25 μm. D. Surface view of thallus showing raised multiporate conceptacles (arrows). Scale bar 375 μm. E. Surface view of conceptacle showing pores, each surrounded by rosette cells (arrow). Scale bar 140 μm. F. Magnified view of pore (P) with rosette cells (R) indicated by arrow in Fig. 5E. Also shown are pennate diatoms. Scale bar 20 μm.