Annals of the South African Museum, Volume 16The Museum, 1933 - Natural history |
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Page 565
... sperm globoids have matured and escaped . Only very rarely are sperm globoids seen in a colony with well - developed oospheres . Usually they are seen in young colonies only , where the oospheres are still in the stage of enlargement ...
... sperm globoids have matured and escaped . Only very rarely are sperm globoids seen in a colony with well - developed oospheres . Usually they are seen in young colonies only , where the oospheres are still in the stage of enlargement ...
Page 585
... sperm globoids that vary in either structure or number of sperms . When such do occur it is almost invariably in material which shows other signs of abnormality ; for example , material which has been subjected to unfavourable ...
... sperm globoids that vary in either structure or number of sperms . When such do occur it is almost invariably in material which shows other signs of abnormality ; for example , material which has been subjected to unfavourable ...
Page 595
... sperms within the body of the parent . Under normal conditions such cases are , however , exceptional . As liberation approaches , the sperm globoid is seen to be moving in the outer part of the vesicle , which begins to bulge outward ...
... sperms within the body of the parent . Under normal conditions such cases are , however , exceptional . As liberation approaches , the sperm globoid is seen to be moving in the outer part of the vesicle , which begins to bulge outward ...
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