Leptomyxa variabilis Geisen et Burberg, 2016

Diagnosis: Flattened, expanded or comet-shaped cells, moderately branched and never reticulate, 30-150 µm across. Multinucleate, nuclei of vesicular type.  Rounded cysts 15-25 µm in diameter.

Ultrastructure: SSU rDNA sequence of the type strain contains signatures TCC GGA CCT TTT AGG starting from position 112 and TTT AGG GAA TTA AGT starting from the position 661.

Differential diagnosis: L. variabilis usually is a comparably small species of the genus Leptomyxa, less ramose and more elongated compared with larger taxa such as L. arborea. However, only molecular signature sequences allow reliable identification.

Ecology: Type location: Roots of Capsella bursa-pastoris, Cologne, Germany.

Recent posts

Difflugia key ovoid

Difflugia Ovoid Group Key characters: Test ovoid, in cross section rounded. Pseudostome circular. 1 Test with collar or short neck 2 1′ Test without collar

Read More »

Difflugia: ovoid tests

Difflugia – group 1 Test < 60 µm. Test in cross section rounded. Test with rounded fundus. Pseudostome with smooth circular edge. Test not spherical

Read More »

Difflugia ampla

Difflugia ampla, after Rampi, 1950 (l) and Gauthier-Lièvre et Thomas, 1958 (r) Difflugia ampla Rampi, 1950 Diagnosis: Test broadly pyriform, with a wide and rounded

Read More »