Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 64. (Budapest 1972)
Kol, E.: Snow algae from Signy Island (South Orkney Islands, Antarctica)
SNOW ALGAE FROM SIGNY ISLAND 65 Chlamydomonas antarcticus WILLE (Pl. I. Figs. 32-39) Resting cells sphaerical, 5-30 fx in diameter. Chloroplastis campanuliform, without pyrenoid. Gigantic cells, 30 fx wide and 45 fx long (Pl. I. Fig. 3) also occurred, cells frequently surrounded by thick sheath of mucigale (Pl. I. Fig. 9). Vegetative cells (Pl. I. Figs. 32, 33, 37, 38) elliptic, widely oval, with thin cell Avail, shape of chloroplastis hardly observable. Vegetative cell 25-30 fx long, 15 fx wide, with a minute plasmopapilla in its anterior part. This microorganism rather resembles Chlamydomonas sanguinea LAGERH., described by LAGERHEIM (1892) from the red snow of the volcano Pichincha in South America. Reproduction by cell-division (Pl. I. Fig. 35). This microorganism was first found by WILLE in the Antarctica (1912: 188), in the red snow, collected by L. GAIN of the "Deuxième Expedition Antarctique Française (1908-1910) commandée par le Dr. JEAN CHARCOT", of Wienke Island (near the "rookeries Pingouins"), on 27 December, 1908. Our knowledge of the red snow of the Antarctica is still incomplete. Owing to the very few snow collections from the Antarctic regions, the algal communities of the red snow deriving from these territories still need investigations. As far as I know, the algal species causing the red snow of the Antarctica was not successfully brought into culture so far. According to literature, several authors regard Chlamydomonas nivalis (BAU.) WILLE as the cause of the red snow of the Antarctica. In my opinion, however, the species Chlamydomonas antarcticus WILLE produces the red snow of the Antarctica (KOL. 1908). Some authors contend the occurrence of Chlamydomonas nivalis (BAU.) WILLE in the Antarctica. Thus, FRITSCHE'S remark (1912: 120) ''Chlamydomonasnivalis(SOMMERF.) WILLE (?)", and (1912: 122) "Chlamydomonas nivalis (SOMMERF.) WILLE "these resting-cells may include LAGERHEIM'S C. sanguinea" . Cylindrocystis brébissonii MENEGH. fo. cryophila KOL C\dindrical cells, 40-45 fx long. 12-14 fx wide, apices widely rounded, two pyrenoids and one chloroplastis. Not rare on the snow surfaces of the Southern Hemisphere. Mesotaenium berggrenii (WITTR.) LAGERHEIM (Pl. I. Figs. 40, 41) Cylindrical cells, 7 /x wide. 10-25 fx long, widely rounded. One chloroplastis and one pyrenoid. A characteristic cryobiont, known from the snow and ice fields of both Hemispheres. On the Antarctica, it was first found by WILLE (GAIN, 1912:188) in the red snow of W T ienke Island. 5 Természettudományi Múzeum Évkönyve 1972.
