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Observations on the Genus Volvor in Africa By FLORENCE Rich
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Africa algae antheridium apex 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 endospore enlargement equatorial escape eyespot female colonies genus germination globator gonidia gonidium hollow inversion Juvenile Kimberley Kuschakewitsch large number latter Linyanti Linyanti River living material M. A. P. Neill male colonies male initial cell methylene blue monoecious N'gamo nucleolus nucleus number of cells number of daughter observations occasionally oogonium oospheres oospores parent colony phase phialopore photographs Plate XLVI Plate XVIII pool pore posterior pole protoplasmic connections protoplasmic strands protoplast pyrenoid reproductive cells Rich and Pocock Rietfontein ripe oospores Rotifers rounded Rousseletii seen sexual colonies Shaw showing slightly smaller somatic cells sperm bundles sperm globoids spermatozoids Sphaerocystis spheroid spines spiny spore stained structure surface view usually vacuoles vegetative cells vesicle vleis Volvor wall young colony Zimmermann