Nostoc interbryum Sant’Anna et al. (2007: 96)

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 : 18

Nostoc interbryum Sant’Anna et al. (2007: 96) ( Fig. 11D–H ).

Colonies macroscopically blackish, round to elongated, or amorphous microscopic colonies, 30.06–87.54 μm wide. Trichomes moniliform, densely to sparsely arranged in colonies, flexuous, not branched. Sheath conspicuous, firm, non-lamellated, hyaline to brown. Cells spherical or sub-quadratic, 2.19–9.86 µm wide. Apical cell rounded. Cell content homogenous or slight granulated, blue-green. Heterocyte spherical, semielliptical (2.84) 3.55–5.69 µm wide, brown, basal or intercalary position. Akinetes spherical or irregular in mature colonies, 4.11–5.69 μm diam.

Habitat: —Tree bark; associated with Hassallia sp. and Gloeocapsa sp.2 .

Studied material: — PEUFR55785 , PEUFR55786 , PEUFR55797 , PEUFR56647

Figures

FIGURE 11. A–C. Komarekiella sp.—different stages of the life cycle. D–H. Nostoc interbryum—different stages of the life cycle; D. specimens from field samples; E–H. specimens from cultured strains; F. the filament inside the colonies with individual sheath (arrows); G. heterocyte (arrows). I–L. Brasilonema epidendron; M–O Brasilonema ornatum. Scale bar: 100 μm (E); 50 μm (J); 10 μm (to the others).