Microcoleus vaginatus Gomont ex Gomont (1892: 355)

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 : 14-15

Microcoleus vaginatus Gomont ex Gomont (1892: 355) ( Fig.10M ).

Filaments with numerous trichomes (≥15). Trichomes cylindrical, attenuated or not, not constricted. Sheath inconspicuous. Cells isodiametric to slight cylindrical, 3,04–7,13 µm diam., 3,38–7,32 µm long, ratio l/w = 1,18. Apical cell conical, with calyptra. Cell content with little granules near cross-wall, blue-green. Without necridia.

Habitat:— Rock totally exposed to the sun; associated with Stigonema fremyi , Scytonema schmidtii and Hassallia aff. andreassenii .

Studied material:— PEUFR55772

Figures

FIGURE 10. A–B. Chroococcidiopsis sp.1; C–D. Chroococcidiopsis sp.2; E–F. Pycnacronema rubrum; G. Microcoleus vaginatus; H–I. Porphyrosiphon ceylanicus; J. Porphyrosiphon kaernbachii; K. Lyngbya ocreata; L–N. Dapisostemon sp.; O–R. Komarekiella sp.— different stages of the life cycle. Scale bar: 50 μm (L); 10 μm (to the others).