Figures 9–17 in Gelidiella papillosa sp. nov. (Gelidiellaceae, Rhodophyta) from Veracruz, Mexico, in the context of the worldwide distribution of G. acerosa

Figures 9–17: Gelidiella papillosa sp. nov. (9) UAMIZ-1438. Detail of main axis and branchlets showing darkened tips. Scale bar = 3 mm. (10) UAMIZ-1433. Fresh specimen showing detail of basal region of main axis with papillose bumps (arrows). Inset, enlargement of a bump. Scale bar = 1.5 mm. (11) UAMIZ-1432. Cross section of basal portion of main axis showing a papilla with depressed apex (arrow). Scale bar = 130 µm. (12) UAMIZ-1436. Cross section of basal portion of main axis showing development of papilla without evident apical cell, with blunt apex. Scale bar = 66 μm. (13) UAMIZ-1437. Cross section of main axis showing outer cortical cells (arrowheads), inner cortical cells (blue arrows) and medullary cells (black arrows). Scale bar = 15 µm. (14) UAMIZ-1433. Detail of fertile branch showing swollen stichidia at apices of branchlets (arrows). Scale bar = 1 mm. (15) UAMIZ-1432. Cross section through middle portion of fertile branchlet showing arrangement of tetrasporangia (arrows). Scale bar = 110 µm. (16) UAMIZ-1433. Cross section of fertile branchlet showing immature tetrasporangia arising from inner cortical cells (arrows) and premature development of tetrasporangia (arrowheads). Scale bar = 30 µm. (17) UAMIZ-1432. Cross section through middle portion of fertile branchlet showing mature tetrasporangia. Scale bar = 30 µm.