FIGURE 5 in Morphological and molecular systematic investigation of Laurencia karachiana sp. nov. (Ceramiales, Rhodophyta) from Karachi, Pakistan

FIGURE 5. Laurencia karachiana Bibi, Cassano & Rasheed sp. nov. (A) Transverse section of upper portion of branch showing an axial cell (arrow) with four pericentral cells (p). (B) Detail of medullary cell with lenticular thickening (arrow). (C) Male branches. (D) Detail of compound-cymose male branches. (E) Longitudinal section through a male branchlet showing spermatangial branches in cup-shaped tips. (F) Detail of of trichoblast-type spermatangial branches with two laterals, sterile (arrow) and spermatangial branches. (G) Detail of spermatangial branches with terminal vesicular sterile cells (arrow) and spermatangia with an apical nucleus. Scale bar: A and B, F and G, 25 μm; C, 2 mm; D, 1 mm; E, 100 μm.