Anabaenopsis tanganyikae

Mcgregor, Glenn B., 2018, Freshwater Cyanobacteria of North-Eastern Australia: 3. Nostocales, Phytotaxa 359 (1), pp. 448-450 : 448-450

Anabaenopsis tanganyikae (G.S.West) Wołoszyńska & Miller in Miller (1923: 125) Fig. 3 A–F .

Basionym: Anabaena tanganyikae G.S.West (1907: 171)

Filaments planktonic; trichomes solitary, arcuate or loosely screw-like coiled, not or only slightly constricted at the cross walls. Vegetative cells cylindrical 1.2–3.5 × longer than wide, facultatively with aerotopes, 4–10 (–12) μm long × 2.5–4.0 μm broad. Heterocytes spherical to broadly oval, 3.5–8.0 μm × 3.0–5.5 μm, intercalary in pairs. Akinetes solitary or in series, widely oval to cylindrical, with colourless epispore, 7–15 μm long × 4.0–7.5 μm broad.

Specimens examined:—Bill Gunn Dam, Borumba Dam, Burdekin Falls Dam, Callide Dam, Kirar Weir, Wuruma Dam.

Other records:— South Australia: River Murray at Milang, Goolwa, Lake Alexandrina at Pelican Point, Lake Albert at Meningie, Howards Dam, Baker (1991) .

Observations:—Pan-tropical distribution, occasionally reported from warmer areas of the temperate zone; uncommon in Australia, known from mesotrophic reservoirs along the Queensland coast, and weir pools of the southern Murray-Darling Basin.

APHANIZOMENON

Figures

FIGURE 3. A–F Anabaenopsis tanganyikae (ak = akinete); G–H Anabaenopsis circularis. Scale bars = 20 μm