Camptylonemopsis cf. pulneyensis

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

Camptylonemopsis cf. pulneyensis Fig. 61 A–H .

Filaments solitary or in small irregular clusters, amongst filamentous algae, crescent-shaped, 3.3–6.6 μm wide. Trichome cylindrical, narrowed towards the central region and widened towards the apices, clearly constricted at the cross walls. Sheath thin, firm, hyaline, not lamellated, open at the ends. Vegetative cells cylindrical, 1.2–3.1 × longer than broad in the central region, 0.3–1.3 × longer than broad towards the apices, 4.8–12.2 μm long × 2.3–4.4 μm wide; apical cell broadly rounded. Heterocytes intercalary, elongated cylindrical, 8.4–14.2 μm long × 3.3–4.4 μm broad. Akinetes intercalary, single or 2–3 in series, remote or adjacent to heterocytes, cylindrical with bluntly rounded ends, 8.5–10.5 μm long × 3.3–5.0 μm wide.

Specimens observed:—Palmer R. at Gum Ck.

Other records:— Victoria: Darling (1982), as C. cf. pulneyensis .

Observations:— C. pulneyensis was originally described growing amongst other algae in a pool in southern India; akinetes were not reported. The observed material from northern Queensland is generally smaller in size, however similar in all other aspects. Description of C. cf. pulneyensis from an Australian alpine sphagnum bog is likely to be another species.

FORTIEA

Figures

FIGURE 61. A–H Camptylonemopsis cf. pulneyensis. Scale bars = 20 μm