Sentence Examples


  • The sporogenous tissue, which is referable to several archesporial cells, is surrounded by a tapetum, mostly derived from the sporogenous group. In the microsporangium all the mother-cells undergo the tetrad division, giving rise to the numerous microspores.
  • The latter are more numerous in the microsporangium than in the megasporangium.
  • Taxus, Cupressus, &c.), or more usually Micro- (Pinus, Larix, &c.) it reaches maturity before the dehis- cence of the microsporangium.