Annals of the South African Museum, Volume 16The Museum, 1933 - Natural history |
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Page 464
... sometimes only 1 is present , though 8 is a common number . Several colonies were found with 9 daughters , three with 10 , three with 12 , and one with 14. On escape they measure from 135 to 200 μ . Sometimes daughter colonies are found ...
... sometimes only 1 is present , though 8 is a common number . Several colonies were found with 9 daughters , three with 10 , three with 12 , and one with 14. On escape they measure from 135 to 200 μ . Sometimes daughter colonies are found ...
Page 588
... sometimes even in the 8 - celled stage the curvature is sometimes very slight ( Plate XLII , K ) . The 8 - celled colony here shown , however , is somewhat unusually flat . In succeeding divisions the polar axes of the individual cells ...
... sometimes even in the 8 - celled stage the curvature is sometimes very slight ( Plate XLII , K ) . The 8 - celled colony here shown , however , is somewhat unusually flat . In succeeding divisions the polar axes of the individual cells ...
Page 592
... Sometimes , how- ever , mature globoids were seen which still had a pore , usually round in outline but sometimes either triangular or quadrilateral , in the centre of the upper surface . This was , however , not seen in young vigorous ...
... Sometimes , how- ever , mature globoids were seen which still had a pore , usually round in outline but sometimes either triangular or quadrilateral , in the centre of the upper surface . This was , however , not seen in young vigorous ...
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