Annals of the South African Museum, Volume 16The Museum, 1933 - Natural history |
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Page 449
... varying extent form during the rainy season , while farther west there is extensive swamp - land , also bordered by a series of similar vleis . In most of these pans and vleis , and in many quiet backwaters of the river itself , Volvox ...
... varying extent form during the rainy season , while farther west there is extensive swamp - land , also bordered by a series of similar vleis . In most of these pans and vleis , and in many quiet backwaters of the river itself , Volvox ...
Page 470
... varying proportions of asexual to sexual col onies and varying numbers of daughter colonies . Description in text . E. Mature daughter in situ showing gonidia ( under cover slip ) . A and D x 15. B x 12. C x 25. E × 150 . PLATE XIX . V ...
... varying proportions of asexual to sexual col onies and varying numbers of daughter colonies . Description in text . E. Mature daughter in situ showing gonidia ( under cover slip ) . A and D x 15. B x 12. C x 25. E × 150 . PLATE XIX . V ...
Page 513
... varying from three to five weeks , alternating with periods of dryness varying from a few days to several weeks . On each visit collections were made and preserved in formalin or iodine . The other two pools were not discovered until ...
... varying from three to five weeks , alternating with periods of dryness varying from a few days to several weeks . On each visit collections were made and preserved in formalin or iodine . The other two pools were not discovered until ...
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