Annals of the South African Museum, Volume 16The Museum, 1933 - Natural history |
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Page 565
... oospheres . Usually they are seen in young colonies only , where the oospheres are still in the stage of enlargement ( Plate XIII , C ) and not nearly ready for fertilisation . As in the case of the daughter colonies , the male globoids ...
... oospheres . Usually they are seen in young colonies only , where the oospheres are still in the stage of enlargement ( Plate XIII , C ) and not nearly ready for fertilisation . As in the case of the daughter colonies , the male globoids ...
Page 606
... oospheres , no one has as yet recorded the entrance of the sperm into the oosphere in any such case ( Mainx , 1929 , p . 210 ) . Klein mentions that he frequently found dead sperms within colonies with ripening oospores . A priori it ...
... oospheres , no one has as yet recorded the entrance of the sperm into the oosphere in any such case ( Mainx , 1929 , p . 210 ) . Klein mentions that he frequently found dead sperms within colonies with ripening oospores . A priori it ...
Page 608
... oosphere is withdrawn , the oospore rounds off , clothes itself with a several- layered wall , and is deep sunk within the parent . 5. Sperms are frequently found in both species within the colony , apparently swarming round young oospheres ...
... oosphere is withdrawn , the oospore rounds off , clothes itself with a several- layered wall , and is deep sunk within the parent . 5. Sperms are frequently found in both species within the colony , apparently swarming round young oospheres ...
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