• Journal of Ecology and Environment
• /
• v.37 no.4
• /
• pp.365-378
• /
• 2014

This study was carried out on freshwater chlorococcal green algae in ponds, swamps, reservoirs, lakes and rivers (290 sites) from May 2012 to January 2014. The family Radiococaceae was identified and classified into 3 genera, 12 species and 1 variety at 23 sites. These taxa were Eutetramorus. nygaardii, E. tetraporus, E. planctonicus, E. fottii, E. globosus, E. polycoccus, Coenocystis planctonica, C. planctonica var. hercynica, C. micrococca, C. subcylindrica, Gloeocystis baneergattensis, G. papuana, and G. polydermatica. These taxa may or not had remnants of the cell wall in the colonial gelatinous envelope for a short time. Of these, 2 taxa are newly recorded in Korea from this study: 1) C. micrococca and 2) G. polydermatica.

• Journal of Ecology and Environment
• /
• v.37 no.4
• /
• pp.351-363
• /
• 2014

A study on fresh-water green coccoid algae was carried out at ponds, swamps, reservoirs, lakes and rivers (290 sites) from May 2011 to January 2014. In this study, 4 genera and 13 taxa of the family Radiococaceae having the remnants of cell wall existing for a long time in the colonial gelatinous envelope are classified and identified from 24 sites. Many taxa of this family, however, have not been recorded in Korea yet. Of these 13 taxa, 5 taxa are newly recorded in Korea by this study: 1) Schizochlamydella solitaria, 2) Thorakochloris planktonica, 3) Radiococcus bavaricus, 4) R. nimbatus, and 5) R. planktonicus.

• Applied Microscopy
• /
• v.12 no.1
• /
• pp.49-56
• /
• 1982

A case of systemic cryptococcosis developed in 4 year old boy was described and illustrated by light and electron microscope. Light microscopically, the upper dermis of the skin showed chronic nonspecific inflammation with numerous spherical spores surrounded by a clear halo created by the wide gelatinous capsule. Ultrastructurally, the C. neoformans showed the wide capsule containing microfibrils that appeared to radiate from the cell wall and to coil and interwine in various directions. The cell was uninucleate with a single nucleolus. Along the inner nuclear envelope, numerous small vesicles were present. In addition, C. neoformans presented membranous organelles derived from the plasma membrane and comparable to bacterial mesosomes.