Thecochaos fibrillosum – Tirol, Austria
Thecochaos fibrillosum (Greeff, 1891)
Diagnosis: Locomotive form usually broad, irregular; branched only when changing direction. Surface with wrinkles. Anterior hyaloplasm as a crescentic cap. Multinucleate, up to one hundred; each nucleus ovoid or spherical, with central nucleolus.
Dimensions: 160 to 320 µm in length, nuclei 7.0-10.8 µm.
Ecology: Freshwater. Sphagnum.
Geographical distribution: Germany (Greeff, 1891); Switzerland (Penard, 1902); Austria (Angie Opitz, pers. comm.); Sweden (Siemensma, www.arcella.nl, 2026)
Remarks: Rare.
Locomotive form, Sphagnum, Store Mosse NP, Sweden, 2026
Locomotive form, detail, Sphagnum, Store Mosse NP, Sweden, 2026
Two nuclei, Store Mosse NP, Sweden, 2026
Disturbed cell, Sphagnum, Store Mosse NP, Sweden, 2026
Disturbed cell, Sphagnum, Store Mosse NP, Sweden, 2026
Disturbed cell, Sphagnum, Store Mosse NP, Sweden, 2026
Cell with about 30 nuclei
A large number of nuclei is visible
Five nuclei
Photomicrograph: Angie Opitz
Photomicrograph: Angie Opitz