Annals of the South African Museum, Volume 16The Museum, 1933 - Natural history |
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Page 433
... present paper describes further species and forms belonging to this section . Janetosphaera is represented by J. aurea ( = V. aureus ) , differing in no marked degree from that found in Europe , while V. africanus belongs to the third ...
... present paper describes further species and forms belonging to this section . Janetosphaera is represented by J. aurea ( = V. aureus ) , differing in no marked degree from that found in Europe , while V. africanus belongs to the third ...
Page 436
... present N'gamo station and 23 miles north of Gwaai . She visited the vlei , which is an extensive one several acres in area in the wet season , with the railway on an embankment built across it , and collected Volvox . An accident ...
... present N'gamo station and 23 miles north of Gwaai . She visited the vlei , which is an extensive one several acres in area in the wet season , with the railway on an embankment built across it , and collected Volvox . An accident ...
Page 451
... present paper ) . To that description we make the following additions The asexual colonies are broadly ovoid in shape , the posterior end being usually more pointed than the anterior . Length from 850 to 1200 μ , width from 810 to 1040 ...
... present paper ) . To that description we make the following additions The asexual colonies are broadly ovoid in shape , the posterior end being usually more pointed than the anterior . Length from 850 to 1200 μ , width from 810 to 1040 ...
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