Cyanostylon gelatinosus Azevedo & Sant’Anna (1994a: 76)

Jr, Watson Arantes Gama, Iv, Haywood Dail Laughinghouse & Sant’Anna, Célia Leite, 2014, How diverse are coccoid cyanobacteria? A case study of terrestrial habitats from the Atlantic Rainforest (São Paulo, Brazil), Phytotaxa 178 (2), pp. 61-97 : 72-73

Cyanostylon gelatinosus Azevedo & Sant’Anna (1994a: 76) ( Figs. 6A–6D ).

Dendroid to irregular, dense gelatinous colonies, 3–50 celled, to more. Mucilaginous stalks tubular, round to elliptical, branched, firm, hyaline, conspicuous, lamellate, 5.7–8.4 µm diam. Cells spherical, (1.2)1.5–2.7(3.2) µm diam., 1–2 disposed at the stalk end. Cell content homogeneous, blue-green.

Habitat: —Cave wet walls.

Studied material:— BRAZIL. São Paulo: Ubatuba, “Sununga” Beach (Gruta-que-chora), 23° 31’ S, 45° 8’ W, 12 April 2003, M. T. Fujii et al. (SP 401448) .

FIGURE 5C . Chroococcus varius

FIGURES 5D–5E . Chroococcus cf. minor . 5E. Colony sheath highlighted by China ink.

FIGURES 5F–5G . Chroococcus cf. turgidus

FIGURES 5H–5I . Chroococcus cf. varius . General colony habit and detail of a colony dyed with methylene blue solution, highlighting the lamellate sheath.

FIGURES 5J– 5L . Cyanosarcina sp. 5 J. Detail of cell in a successive division (arrow). 5K. Cell after consecutive divisions—‘giant cell’. 5L. General colony habit, Chroococcus -like.

Figures

FIGURES 5A–5B. Chroococcus tenax. 5A. General colony habit highlighting the lamellated sheaths. 5B. Desiccated cell showing concentrically lamellate sheaths and blue color.

FIGURES 6A–6D. Cyanostylon gelatinosus. 6C. Cells detail. 6D. Mucilage stalk detail. FIGURE 6E. Cyanostylon cf. gelatinosus. General colony habit with detail of mucilage stalks (arrows). FIGURES 6F–6G. Cyanostylon sp. 6G. Mucilage stalk detail (arrow). FIGURES 6H–6I. Endospora rubra. General colony habit with cell packets showing individual envelopes (arrows).