Figures 19–23 in DNA sequencing reveals three new species of Chamberlainium (Corallinales, Rhodophyta) from South Africa, all formerly passing under Spongites yendoi

Figures 19–23: Chamberlainium glebosum habit and vegetative anatomy. (19) Rock fragment with holotype specimen showing the region (white arrow) of the holotype from which all analyses were done (L 3986123, tetrasporangial). Scale bar = 20 mm. (20) Magnified view showing highly protuberant nature of C. glebosum holotype specimen (L 3986123). Scale bar = 2 mm. (21) Vertical section through the margin (black arrow) showing the monomerous thallus construction with plumose medulla (M) giving rise to cortical filaments (C) that terminate in a single layer of epithallial cells (black arrowhead) (UWC 15/34). Scale bar = 100 μm. (22) Vertical section of the inner thallus showing cell fusions (f) between adjacent medullary filaments (UWC 15/34). Scale bar = 10 μm. (23) Vertical section of the outer thallus showing a single layer of epithallial cells (e) subtended by a layer of subepithallial initials (i). Note the cell fusions (f) between adjacent cortical filaments (UWC 15/34). Scale bar = 20 μm.