Annals of the South African Museum, Volume 16The Museum, 1933 - Natural history |
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Page 433
... latter divides the genus Volvox into subsections , to which he applies Shaw's generic names . G. S. West considered that V. africanus was the African species comparable with the European V. aureus , and that V. Rousseletii was similarly ...
... latter divides the genus Volvox into subsections , to which he applies Shaw's generic names . G. S. West considered that V. africanus was the African species comparable with the European V. aureus , and that V. Rousseletii was similarly ...
Page 445
... latter its place is occupied by a highly refractive granule , just as described by Janet * for V. globator and V. aureus . From two to four contractile vacuoles with a periodicity of from 15 to 30 seconds , more or less , occur in the ...
... latter its place is occupied by a highly refractive granule , just as described by Janet * for V. globator and V. aureus . From two to four contractile vacuoles with a periodicity of from 15 to 30 seconds , more or less , occur in the ...
Page 605
... latter , without division , forms an oogonium containing a single large oosphere . In the latter case this view presents no difficulty - the Volvox oogonium is comparable with the equivalent structures found elsewhere among the algae ...
... latter , without division , forms an oogonium containing a single large oosphere . In the latter case this view presents no difficulty - the Volvox oogonium is comparable with the equivalent structures found elsewhere among the algae ...
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