In: Phyton, 50 Fasc. 1 (2010), S. 127-136 with 18 figures

Key words: Trochisciopsis tetraspora f. minor forma nova, Chlorococcales, Chlorophyceae, Chlorophyta, green algae, soil algae.– Morphology, ultrastructure. – Pirin Mts., Bulgaria.

Summary

Gärtner G., Uzunov B. A., Stoyneva M. P., Kofler W & Ingolic E. 2010. Trochisciopsis tetraspora f. minor forma nova (Chlorophyceae-Chlorococcaceae) – a new terrestrial green algal taxon from Pirin Mts. (Bulgaria) and its ultrastructure. – Phyton (Horn, Austria) 50 (1): 127–136, with 18 figures.

The present paper describes the first finding of a member of the rarely recorded soil green algal genus Trochisciopsis Vinatzer in Bulgaria. Aspects of its morphology and reproduction were investigated under LM and SEM and details of its ultrastructure were revealed with TEM. Based on these findings, a new form of the species Trochisciopsis tetraspora Vinatzer is described – T. tetraspora f. minor Gärtner, Uzunov, Stoyneva, Kofler & Ingolic. The new form is characterized by i) smaller cells, ii) ribs of the cell walls interrupted towards the pole, not meeting at the pole.