Annals of the South African Museum, Volume 16The Museum, 1933 - Natural history |
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Page 487
in embryo colonies before escape , but are entirely absent in the adult . At certain stages of inversion of the embryo in V. gigas , as described above , relatively stout protoplasmic connections between the cells became obvious in ...
in embryo colonies before escape , but are entirely absent in the adult . At certain stages of inversion of the embryo in V. gigas , as described above , relatively stout protoplasmic connections between the cells became obvious in ...
Page 517
... embryo in " Hat " stage ; side view showing wall of parent colony , adjacent somatic cells and older embryo slightly out of focus ( 685 ) . A x 70. B x 45. C to E x 25. F x 390 . PLATE XXVII . Volvox gigas . Inversion of embryo . A ...
... embryo in " Hat " stage ; side view showing wall of parent colony , adjacent somatic cells and older embryo slightly out of focus ( 685 ) . A x 70. B x 45. C to E x 25. F x 390 . PLATE XXVII . Volvox gigas . Inversion of embryo . A ...
Page 519
... embryos ( 651 ) . A x 25. B to D x 70 . PLATE XXXII . Volvox africanus . Inversion of embryo . A , B. Large colony with two pairs of maturing embryos ( equatorial ) , one pair recently inverted , in one of which the gonidia have sunk ...
... embryos ( 651 ) . A x 25. B to D x 70 . PLATE XXXII . Volvox africanus . Inversion of embryo . A , B. Large colony with two pairs of maturing embryos ( equatorial ) , one pair recently inverted , in one of which the gonidia have sunk ...
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