Yuzurua poiteaui var. gemmifera (Harvey) M.J.Wynne

Resendiz, María Luisa Núñez, Dreckmann, Kurt M., Sentíes, Abel, Wynne, Michael J. & Tejera, Hilda León, 2019, Marine red algae (Rhodophyta) of economic use in the algal drifts from the Yucatan Peninsula, Mexico, Phytotaxa 387 (3), pp. 219-240 : 230

Yuzurua poiteaui var. gemmifera (Harvey) M.J.Wynne

Thallus fleshy, reddish-purple, 6–14 cm in length, with cylindrical axes in cross section, 530–620 μm in diameter. Main axes branching alternate or irregular; branches with small short laterals wart-like, in spiral, smooth margins and depressed apices ( Fig. 18 ). Polysiphonous organization, with 2 pericentral cells, 50–60 μm in diameter, of smaller diameter than the medullary cells ( Fig. 19 ). Medulla with 4–5 layers of rounded cells, 30–75 μm in diameter. Cortex with one layer of rounded and pigmented cells, 10–15 μm in length ( Fig. 19 ).

Figures

FIGURES 17–27. 17. Laurencia intricata. Medullary and cortical cells. Scale bar = 30 μm. 18–19. Yuzurua poiteaui var. gemmifera. 18. Habit.Scale bar = 3cm. 19. Pericentral, medullary and cortical cells. Scale bar = 120 μm. 20–21. Hypnea musciformis. 20. Habit. Scale bar = 2 cm. 21. Medullary and cortical cells. Scale bar = 120 μm. 22–26. Eucheumatopsis isiformis. 22. Habit. Scale bar = 4 cm. 23. Medullary filaments and cortical cells. Scale bar = 460 μm. 24. Mature cystocarp. Scale bar = 110 μm. 25. Tetrasporangium laterally attached. Scale bar = 25 μm. 26. Habit with smooth surfaces. Scale bar = 10 cm. 27. Meristotheca cylindrica. Habit. Scale bar = 4 cm.