Aphanothece sp.

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 : 63-64

Aphanothece sp. ( Figs. 1J–1K ).

Round to elongated colonies, 29.2–78.9 µm diam. Sheath firm to gelatinous, hyaline, conspicuous. Cells densely to sparsely disposed, ellipsoid, rarely cylindrical, 5.1–8.9 × 3.9–5.3 µm, 1.6–3.0 times longer than wide. Individual conspicuous cell sheaths can occur near colonial edge. Cell content granulated, pale purple.

Habitat: —Tree bark in the inner forest.

Notes: —The present population is distinct by its corticolous habitat, cell content color, dimensions and disposition. Probably, this Atlantic Rainforest Aphanothece is a morphospecies new to science, and should be classified in the subgenus Cyanogastrum ( Schiller 1956: 203) Komárek (1995: 82) .

Studied material: — BRAZIL. São Paulo: Cananéia, State Park of “Ilha do Cardoso” ( Perequê ), 25º 5’ 8” S, 47º 55’ 30” W, 30 June 2010, W.A. Gama-Jr. & C.F.S. Malone (SP 401442, SP 401444) .

FIGURES 1C–1E . Aphanothece cf. castagnei . General colony habit, with yellow-brown sheaths and a colony showing cells with individual envelope (arrow).

FIGURES 1F–1G . Aphanothece cf. densa . General colony habit and detail of an elliptic cell (arrow).

FIGURES 1H–1I . Aphanothece cf. microscopica . General colony habit and colonies with cylindrical cells and visible chromatoplasm (arrow). FIGURES 1J–1K . Aphanothece sp.

FIGURES 1L . Gloeothece fuscolutea .

Figures

FIGURES 1A–1B. Aphanothece saxicola. General colony habit with cells in an individual envelope (arrow).