Calochaete Hauer, Bohunická & Mühlsteinová, 2013

Hauer, Tomáš, Bohunická, Markéta & Mühlsteinová, Radka, 2013, Calochaete gen. nov. (Cyanobacteria, Nostocales), a new cyanobacterial type from the “ páramo ” zone in Costa Rica, Phytotaxa 109 (1), pp. 36-44 : 38

Calochaete Hauer, Bohunická & Mühlsteinová , gen. nov.

Colony on agar dark green or brown, amorphous. Filaments usually very long with basal heterocyte, swollen at the base, then gradually tapering towards the end, without terminal hair, often with false branching, single or double. Sheath 0.5–1.5 µm thick, unstructured, colorless. Trichomes notably constricted at cross-walls, 7–9 µ m wide at the base and 3.0– 4.3 µm wide at well-developed ends. Cells olive green, brown to violet, cylindrical or barrel shaped, shorter or longer than wide, 3–8 µm long, basal:apical ratio 1.8–2. Terminal cell longer than wide, cylindrical or bluntly conical. Heterocytes basal or intercalary, green to yellowish, hemispherical or cylindrical, rarely conical, 4–7 µm wide, 4–8 µm long. Reproduction by hormogonia with almost spherical cells. No akinetes were observed.

Type species: Calochaete cimrmanii Hauer, Bohunická & Mühlsteinová.

Etymology:—From the Greek Kalos (beatutiful) and chaete (long hair), refers to one of the morphological features.