Annals of the South African Museum, Volume 16The Museum, 1933 - Natural history |
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Page 446
... vesicle formed from the much enlarged wall of the oogonium , which in its early stages develops similarly to the young antheridium . Within this vesicle the oospore develops . At first it is bounded by a thin wall ; the outline becomes ...
... vesicle formed from the much enlarged wall of the oogonium , which in its early stages develops similarly to the young antheridium . Within this vesicle the oospore develops . At first it is bounded by a thin wall ; the outline becomes ...
Page 624
vesicle . The diagrams A to I in fig . 10 , from drawings made at the times stated , show the successive stages more fully than the incomplete photographic record . The method of inversion is very like that found in the male globoid ...
vesicle . The diagrams A to I in fig . 10 , from drawings made at the times stated , show the successive stages more fully than the incomplete photographic record . The method of inversion is very like that found in the male globoid ...
Page 625
... vesicle , follows ; the protoplasts in- crease in size and become more distant , and the cilia lengthen till the whole vesicle is filled ( fig . 10 , J ) . The vesicle finally disappears . The young colony was never actually seen ...
... vesicle , follows ; the protoplasts in- crease in size and become more distant , and the cilia lengthen till the whole vesicle is filled ( fig . 10 , J ) . The vesicle finally disappears . The young colony was never actually seen ...
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