Annals of the South African Museum, Volume 16The Museum, 1933 - Natural history |
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Page 470
... Rousseletii ( Mr. Steer's Rietfontein culture ) . A - D . Successive phases showing varying proportions of asexual to sexual col onies and varying numbers of daughter colonies . Description in text . E. Mature daughter in situ showing ...
... Rousseletii ( Mr. Steer's Rietfontein culture ) . A - D . Successive phases showing varying proportions of asexual to sexual col onies and varying numbers of daughter colonies . Description in text . E. Mature daughter in situ showing ...
Page 476
... Rousseletii was already in an advanced sexual phase this second species was obviously still very young , with numerous large but still undivided gonidia . In succeeding phases it never appeared in the first collectings . In the first ...
... Rousseletii was already in an advanced sexual phase this second species was obviously still very young , with numerous large but still undivided gonidia . In succeeding phases it never appeared in the first collectings . In the first ...
Page 610
... Rousseletii ( V. capensis 49 to 62 μ , V. Rousseletii 46 to 58 μ ) , so that when allowance is made for the greater length of the spines in the latter the actual spore , the part contained within the mesospore , is a good deal greater ...
... Rousseletii ( V. capensis 49 to 62 μ , V. Rousseletii 46 to 58 μ ) , so that when allowance is made for the greater length of the spines in the latter the actual spore , the part contained within the mesospore , is a good deal greater ...
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