Laurencia intricata J.V.Lamouroux

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

Laurencia intricata J.V.Lamouroux

Thallus mucilaginous, red purple or pink, 8–12 cm in length, with cylindrical axes in cross section, 590–760 μm in diameter. Main axes branching dichotomously or irregularly; branches covered by short laterals of rounded apices and smooth margins ( Fig. 15 ). On the surface of the axes are observed polygonal cells, 35–50 μm in diameter, with thickened walls, each with two “cherry bodies” (one at each pole) opposite ( Fig. 16 ). Polysiphonous organization, with four pericentral cells, 70–90 μm in diameter, larger than the medullary cells ( Fig. 17 ). Medulla with 3–4 layers of rounded cells, 30–60 μm in diameter. Cortex with one layer of anticlinal cells, 3.4–5.8 μm in diameter ( Fig. 17 ).

Figures

FIGURES 6–16. 6. Jania pumila, main axes showing genicula, intergenicula and branching pattern.Scale bar = 5 mm.7–8. Acanthophora spicifera. 7. Habit. Scale bar = 2 cm. 8. Medullary and cortical cells. Scale bar = 70 μm. 9–10. Alsidium seaforthii. 9. Habit. Scale bar = 2 cm. 10. Pericentral, medullary and cortical cells. Scale bar = 100 μm. 11–12. Alsidium triquetrum. 11. Habit. Scale bar = 3 cm. 12. Pericentral and medullary cells. Scale bar = 145 μm. 13–14. Digenea simplex. 13. Habit. Scale bar = 3.5 cm. 14. Pericentral and medullary cells. Scale bar = 110 μm. 15–16. Laurencia intricata. 15. Habit. Scale bar = 2 cm. 16. Superficial cherry bodies. Scale bar = 50 μm.

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.