Annals of the South African Museum, Volume 16The Museum, 1933 - Natural history |
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Page 478
... comparatively rare and only seen during fairly early stages of development of the pool , consists of botryoidal clusters of rounded aggregates of groups of very small cells , similar to very young spheres of the first stage . These have ...
... comparatively rare and only seen during fairly early stages of development of the pool , consists of botryoidal clusters of rounded aggregates of groups of very small cells , similar to very young spheres of the first stage . These have ...
Page 532
... comparatively rare in the Rietfontein material , but less so in that from Kimberley . Even rarer were female colonies with occasional sperm globoids , often somewhat abnormal , which were very occasionally seen in the latter material ...
... comparatively rare in the Rietfontein material , but less so in that from Kimberley . Even rarer were female colonies with occasional sperm globoids , often somewhat abnormal , which were very occasionally seen in the latter material ...
Page 556
... comparatively thick and distinct ; their appearance depends to some extent on the age of the colony and on external conditions . In colonies before and immediately after birth the connections are diffi- cult to see and are merely very ...
... comparatively thick and distinct ; their appearance depends to some extent on the age of the colony and on external conditions . In colonies before and immediately after birth the connections are diffi- cult to see and are merely very ...
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