Mastigocladopsis sp.

Da Anunciação, Raylane R., Paulino, Jonatas M., Moura, Ariadne N., Laughinghouse IV, H. Dail & Gama, Watson A., 2024, Morphometric Characterization And The First Taxonomic Synthesis Of Terrestrial Cyanobacteria From The Atlantic Forest In Northeastern Brazil, Phytotaxa 646 (1), pp. 1-31 : 24

Mastigocladopsis sp. ( Fig. 14O–S ).

Filaments prostrate. Sheath firm, thin, non-lamellated, hyaline to brown. Trichome uniseriate, branching T-shaped, constricted. Apical cell rounded-conical. Cells isodiametric in main filament and cylindrical in branches, 3.09–7.86 µm wide, 2.72–11 µm long, ratio l/w = 1.23. Cell content granulated, grayish-green. Heterocyst cylindrical, 3.09–7.86 µm wide, 2.72–11.77 µm long, in intercalary position. Akinetes pedicellate, spherical, 5.55–8.48 µm wide, sheath firm, thin, brown.

Habitat: —Tree bark.

Notes: —Corticolous habitat, akinetes pedicellate and absence heterocyst pedicellate or lateral are diacritical features differs this morphotype other Mastigocladopsis species.

Studied material: — PEUFR55789

Figures

FIGURE 14. A–C. Scytonemataceae sp.; D–F. Stigonema corticola; G–I. Stigonema fremyi; J–N. Stigonema minutum. O–S. Mastigocladopsis sp.—O. details of the arrangement of the filaments; P. Apical cell; Q. Akinete; E–F. the filament details. Scale: 50 μm (D; G; J; O); 10 μm (to the others).