Annals of the South African Museum, Volume 16The Museum, 1933 - Natural history |
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Page 457
... female coenobia are usually slightly larger than the male ; they produce from 60 to over 200 oogonia , each of which develops a single large flask - shaped oosphere ( Plate XXI , fig . D ) , the apex of which lies a short way below the ...
... female coenobia are usually slightly larger than the male ; they produce from 60 to over 200 oogonia , each of which develops a single large flask - shaped oosphere ( Plate XXI , fig . D ) , the apex of which lies a short way below the ...
Page 468
... female , and asexual coenobia . C. Young female coenobium . D. Young male coenobium . × 108 . x 116 . x 38 . × 70 . PLATE X. V. aureus Ehrenb . , from Potchefstroom . A. Asexual colony with 6 daughters , one half - inverted . B. Somatic ...
... female , and asexual coenobia . C. Young female coenobium . D. Young male coenobium . × 108 . x 116 . x 38 . × 70 . PLATE X. V. aureus Ehrenb . , from Potchefstroom . A. Asexual colony with 6 daughters , one half - inverted . B. Somatic ...
Page 565
... female , containing only oospores ( Plate XIII , E ) . But small , fairly regular gaps in the cell network are ... Female Initial Cell , Oogonium Mother - cell , or Gyno- gonidium . 1. V. Rousseletii . - The female initial cells occur in ...
... female , containing only oospores ( Plate XIII , E ) . But small , fairly regular gaps in the cell network are ... Female Initial Cell , Oogonium Mother - cell , or Gyno- gonidium . 1. V. Rousseletii . - The female initial cells occur in ...
Contents
Observations on the Genus Volvox in Africa By FLORENCE RICH | 429 |
Introduction | 439 |
Volvox Rousseletii G S West | 450 |
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Common terms and phrases
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