FIGURES 15–22 in Taxonomic transfer of the red algae Chrysymenia enteromorpha and C. wrightii to the genus Botryocladia (Rhodymeniaceae, Rhodymeniales)

FIGURES 15–22. Botryocladia wrightii (Harvey) W.E. Schmidt, D.L. Ballantine et Fredericq, comb. nov., from Henashi, Aomori-ken, Japan, MY 18-054. 15) Habit of non-reproductive plant. 16) Surface view of thallus showing complete cortication. Scale bar 40 μm. 17) Cross section through mid thallus region showing pigmented cortical cells and hyaline medullary cells. Scale bar 40 μm. 18) Cross section through middle portion of thallus region, showing irregular gland cell (arrowhead) on modified glandiferous medullary cell. Scale bar 40 μm. 19) Cross section through mid thallus region showing cortical cells, and medullary cell giving rise to internal filament (arrow). Scale bar 40 μm. 20) Medullary cell and internal filament (arrows). Scale bar 40 μm. 21) Cross section through middle part of holdfast showing cortical cells and medullary cells with dense aggregations of internal filaments. Scale bar 0.25 mm. 22) Internal medullary filaments in mid holdfast region, with pit-connection (arrowhead) linking one cell to a large medullary cell. Scale bar 40 μm.