Kryptousia sp.2

Da Anunciação, Raylane R., Paulino, Jonatas M., Moura, Ariadne N., Iv, H. Dail Laughinghouse & 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 : 26

Kryptousia sp.2 ( Fig.16A–E ).

Filaments entangled, forming flake-like groups. Sheath firm, thin, hyaline or absent. Trichomes cylindrical, with bilateral (X type) and tolypothricoid branches, constricted or not. Apical cells conical to conical-rounded. Cells cylindrical to subquadratical, 2.36–6.33 µm wide, 2.35–6.46 µm long. Cell content granulated, blue-green. Basal or intercalary heterocytes, semielliptical, sub-quadratic to cylindrical 3.43–6.48 µm wide, 3.07–7.77 µm long. Necridia present.

Habitat: —Rock.

Notes: —This morphotype is similar to Kryptousia macronema Alvarenga, Andreote, Branco & Fiore , but differs by habitat, being K. macronema described from mangrove ( Alvarenga et al. 2017).

Studied material: — PEUFR 56644

Figures

FIGURE 16. A–E. Kryptousia sp.2; F–I. Streptostemon sp.; J–M. Tolypothrix rechingeri. Scale bar: 50 μm (A; G); 10 μm (to the others).