Sentence Examples


  • The water moved silently over moss and lichen covered slabs of rocks, forming small pools in the low spots.
  • The reproductive organs of the lichen are of a typically fungal character, i.e.
  • In 1865 De Bary suggested the possibility that such lichens as Collema, Ephebe, &c., arose as a result of the attack of parasitic Ascomycetes upon the algae, Nostoc, Chroococcus, &c. In 1867 the observations of Famintzin and Baranetzky showed that the gonidia, in certain cases, were able to live outside the lichen-thallus, and in the case of Physcia, Evernia and Cladonia were able to form zoospores.
  • The algal cells are never known to form spores while part of the lichen-thallus, but they may do so when separated from it and growing free.
  • He investigated the exact relation of fungus and alga and showed that the same alga is able to combine with a number of different fungi to form lichens; thus Chroolepns umbrinus is found as the gonidia of 13 different lichen genera.