Text-book of botany, morphological and physiological . ucaceoe being desti-tute of them.—Ed.] 2 Pringsheim, Morphologic der CEdogonieen in Jahrb. fiir wissen. Bot. vol. I. [Ann. des 1856, vol. V. p. 251.—Carter, Ann. and Mag. Nat. Hist. 1858, vol. I. pp. 29-39.] 30 THALLOPHYTES. cells; they lie either singly or in groups (sometimes as many as twelve) above one anotherin the filament. In most species each mother-cell of this description (antheridium-cell) divides into two equal special mother-cells, each of which produces a spermato-zoid; they escape by the splitting of the mother-cell
Text-book of botany, morphological and physiological . ucaceoe being desti-tute of them.—Ed.] 2 Pringsheim, Morphologic der CEdogonieen in Jahrb. fiir wissen. Bot. vol. I. [Ann. des 1856, vol. V. p. 251.—Carter, Ann. and Mag. Nat. Hist. 1858, vol. I. pp. 29-39.] 30 THALLOPHYTES. cells; they lie either singly or in groups (sometimes as many as twelve) above one anotherin the filament. In most species each mother-cell of this description (antheridium-cell) divides into two equal special mother-cells, each of which produces a spermato-zoid; they escape by the splitting of the mother-cell (as in the case of the zoospores)(Fig. 163, D). The androspores from which the dwarf male plants arise are producedfrom mother-cells similar to those which give birth to the spermatozoids (withoutformation of special mother-cells). After swarming they fix themselves to a definitepart of the female plant, on or near the oogonium, and after germination produce ato«ce the antheridium-cells, and in them the spermatozoids (Fig. 163, A, B, m, m). The.
Size: 974px × 2565px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1875
