Annals of the South African Museum, Volume 16The Museum, 1933 - Natural history |
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Page 466
... occasionally 12-80 43-45 μ smooth produced great - grand- smaller . Rousseletii , from Ussangu 880-1200 Small , un- divided . Ovoid ; posterior end more Numerous Globoids 120-150 36-40 μ 29-32 μ spiny asexual . pointed . Rousseletii ...
... occasionally 12-80 43-45 μ smooth produced great - grand- smaller . Rousseletii , from Ussangu 880-1200 Small , un- divided . Ovoid ; posterior end more Numerous Globoids 120-150 36-40 μ 29-32 μ spiny asexual . pointed . Rousseletii ...
Page 511
... occasional . Dominant species . Sexual predominant . Asexual with few embryos , 2-9 , usually < 8 per colony . very abundant , 473 x 5171034 × 1185 μ . mostly young , 774x 862 μ1250 × 1356 μ . Eggs over 300 per colony . Still dominant ...
... occasional . Dominant species . Sexual predominant . Asexual with few embryos , 2-9 , usually < 8 per colony . very abundant , 473 x 5171034 × 1185 μ . mostly young , 774x 862 μ1250 × 1356 μ . Eggs over 300 per colony . Still dominant ...
Page 532
... occasional sperm globoids , often somewhat abnormal , which were very occasionally seen in the latter material . The anterior pole is always free of reproductive cells , these being as a rule confined to the posterior half in the case ...
... occasional sperm globoids , often somewhat abnormal , which were very occasionally seen in the latter material . The anterior pole is always free of reproductive cells , these being as a rule confined to the posterior half in the case ...
Contents
Observations on the Genus Volvox in Africa By FLORENCE RICH | 429 |
Introduction | 439 |
Volvox Rousseletii G S West | 450 |
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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