Pseudanabaena galeata Böcher (1949: 13

Yu, Gongliang, Zhu, Mengling, Chen, Youxin, Pan, Qianqian, Chai, Wenbo & Li, Renhui, 2015, Polyphasic characterization of four species of Pseudanabaena (Oscillatoriales, Cyanobacteria) from China and insights into polyphyletic divergence within the Pseudanabaena genus, Phytotaxa 192 (1), pp. 1-12 : 5-6

Pseudanabaena galeata Böcher (1949: 13 , fig. 4)

Basionym: Pseudanabaena galeata f. endophytica Anagnostidis in Komárek & Anagnostidis (2005: 88, fig. 67)

Strains: —CHAB732 (KM386854) from Xinghu pond in Wuhan city, Hubei province; CHAB2916 (KM386853), from Lake Erhai in Dali city, Yunnan province.

Habitat:— Freshwater, planktonic or epiplanktic.

Description: —Trichomes usually in fine, thin, indefinite, expanded, and prostrate colonies, sometimes solitary. Macroscopically, the cultures are dark red, brownish red, brown or blue green ( Fig. 1B ). Trichomes violet, brown, brownish yellow, brownish grey or blue green, straight or slightly curved and entangled, without sheath, few-celled, deeply constricted at the thickened cross walls with bubble-shaped gap. Cells cylindrical, 1.2‒4.4 μm long and 0.8‒2.3 μm wide, 1.1‒4.1 L/W ( Table 1). Cell content homogeneous. Thylakoids with 8 parallel layers ( Fig. 2B, C ). Apical cells flat-round, with one or two aerotopes in a bulb.

Figures

FIGURE 1. Morphological features of Pseudanabaena.A. Pseudanabaena mucicola CHAB1147.B, Pseudanabaena galeata CHAB2916. C. Pseudanabaena limnetica CHAB792. D. Pseudanabaena minima CHAB705. Scale bar = 10μm.

FIGURE 2. Ultrastructure of Pseudanabaena. A. Pseudanabaena mucicola CHAB1147. B–C, Pseudanabaena galeata CHAB2916.. D, E. Pseudanabaena limnetica CHAB792. F, G. Pseudanabaena minima CHAB705. Scale bar = 1μm. Thylakoids are marked with T. Phycocyanin granules are marked with PC, and polyphosphate granules with PP.