Annals of the South African Museum, Volume 16The Museum, 1933 - Natural history |
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Page 446
... protoplast extending into the spines . When this exospore has been secreted , the green protoplast is withdrawn from the spines , rounds off once more , and the inner wall is laid down ( text- fig . 4 , C , and Plate XV , fig . F ) ...
... protoplast extending into the spines . When this exospore has been secreted , the green protoplast is withdrawn from the spines , rounds off once more , and the inner wall is laid down ( text- fig . 4 , C , and Plate XV , fig . F ) ...
Page 447
... protoplast : anterior pole 6 to 11 μ ; posterior pole 5 to 9 μ ; average 5 to 7 μ . Somatic protoplast in daughter colony before birth , 4 to 5 μ . Gonidium protoplast in daughter colony before birth , 11 to 13 μ . Sexual cell protoplast ...
... protoplast : anterior pole 6 to 11 μ ; posterior pole 5 to 9 μ ; average 5 to 7 μ . Somatic protoplast in daughter colony before birth , 4 to 5 μ . Gonidium protoplast in daughter colony before birth , 11 to 13 μ . Sexual cell protoplast ...
Page 551
... protoplast becomes smaller and the connecting strands grow finer , the star shape tends to disappear , the protoplasts and connecting strands now appearing as a fine network of which the protoplasts form the nodes ( Plate XIX , D , E ) ...
... protoplast becomes smaller and the connecting strands grow finer , the star shape tends to disappear , the protoplasts and connecting strands now appearing as a fine network of which the protoplasts form the nodes ( Plate XIX , D , E ) ...
Contents
Observations on the Genus Volvox in Africa By FLORENCE RICH | 429 |
Introduction | 439 |
Volvox Rousseletii G S West | 450 |
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Common terms and phrases
Africa algae antheridium antheridium mother-cells appear asexual colonies aureus Cape Flats capensis cell-division chloroplast cilia coenobia coenobium collected complete connecting strands containing culture daughter colonies diameter dioecious division elongated embryo embryo colonies endospore enlargement equatorial escape Eudorina eyespot female colonies gelatinous germination globator gonidia gonidium hollow inversion Juveniles Kimberley Kuschakewitsch large number latter Linyanti Linyanti River living material lobes M. A. P. Neill male colonies methylene blue monoecious N'gamo nucleolus nucleus number of cells number of daughter observations occasionally oospheres oospores phase phialopore phytoplankton Plate XVIII pool pore posterior pole protoplasmic connections protoplast pyrenoid reproductive cells Rich and Pocock Rietfontein ripe oospores Rotifers rounded seen sexual colonies Shaw slightly smaller somatic cells species of Volvox sperm bundles sperm globoids spermatozoids spherical spines spore stained surface view usually vacuoles vesicle vleis Volvox africanus Volvox gigas Volvox Rousseletii wall young colony