Annals of the South African Museum, Volume 16The Museum, 1933 - Natural history |
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Page 488
... sperm bundles develop ( Plate XXV , B ) , or more rarely they may be such rounded dwarf colonies as are described above . Occasionally , however , sperm bundles have been found in female or mixed colonies , where one or two sperm bundles ...
... sperm bundles develop ( Plate XXV , B ) , or more rarely they may be such rounded dwarf colonies as are described above . Occasionally , however , sperm bundles have been found in female or mixed colonies , where one or two sperm bundles ...
Page 489
... bundles , like the smaller ones , are bowl- shaped , almost globular , but flattened at the open side . Thus in one and the same colony sperm bundles of several different sizes may occur ( Plates XXIX , A , C , and XXX , A ) . Stages in ...
... bundles , like the smaller ones , are bowl- shaped , almost globular , but flattened at the open side . Thus in one and the same colony sperm bundles of several different sizes may occur ( Plates XXIX , A , C , and XXX , A ) . Stages in ...
Page 518
... sperm bundles , C with small bundles only . In A , C , and D are numerous gaps left by sperm bundles which have already escaped . B was focussed down through the colony on to the under side , hence the sperm bundles , etc. are seen from ...
... sperm bundles , C with small bundles only . In A , C , and D are numerous gaps left by sperm bundles which have already escaped . B was focussed down through the colony on to the under side , hence the sperm bundles , etc. are seen from ...
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