This website uses cookies to ensure you get the best experience. Learn more

nostoc

nostoc

nostoc Sentence Examples

  • 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.

  • Nostoc lichenoides in most of rutida in Omphalaria; Lichina, in Peltigera, Pannaria and Stictina; Gloeocapsa polydermatica in Baeomyces and Omphalaria; Sirosiphon pulvinatus in Ephebe pubescens.

  • In the case of Solorina, for example, the principal alga is a green alga, one of the Palmellaceae, but Nostoc (a blue-green alga) is also found playing a subsidiary part as FIG.

  • - Section of Homoiomerous Thallus of Collema conglomeratum, with Nostoc threads scattered among the hyphae.

  • (Cystococcus, Nag.) C, Nostoc from the thallus of Physma attacked by the germ-tube from a chalazanum.

  • With Nostoc or Scytonema gonidia.

  • Certain species are regularly found in the intercellular spaces of higher plants; such are species of Nostoc in the thallus of Anthoceros, the leaves of Azolla and the roots of Cycads.

  • The cells of the filament may be all alike, and growth may occur equally in all parts (Oscillatoriaceae); or certain cells (heterocysts) may become marked off by their larger size and the transparency of their contents; in which case growth may still be distributed equally throughout (Nostoc), or the filament may be attached where the heterocyst arises, and grow out at the opposite extremity into a fine hair (Rivulariaceae).

  • Nostoc sp., young colony-fila ment with heterocysts.

  • Nostoc colonies are constantly present in a special cavity of the dorsal lobe of the leaf in Azolla.

  • 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.

  • Nostoc lichenoides in most of rutida in Omphalaria; Lichina, in Peltigera, Pannaria and Stictina; Gloeocapsa polydermatica in Baeomyces and Omphalaria; Sirosiphon pulvinatus in Ephebe pubescens.

  • In the case of Solorina, for example, the principal alga is a green alga, one of the Palmellaceae, but Nostoc (a blue-green alga) is also found playing a subsidiary part as FIG.

  • - Section of Homoiomerous Thallus of Collema conglomeratum, with Nostoc threads scattered among the hyphae.

  • (Cystococcus, Nag.) C, Nostoc from the thallus of Physma attacked by the germ-tube from a chalazanum.

  • With Nostoc or Scytonema gonidia.

  • Certain species are regularly found in the intercellular spaces of higher plants; such are species of Nostoc in the thallus of Anthoceros, the leaves of Azolla and the roots of Cycads.

  • The cells of the filament may be all alike, and growth may occur equally in all parts (Oscillatoriaceae); or certain cells (heterocysts) may become marked off by their larger size and the transparency of their contents; in which case growth may still be distributed equally throughout (Nostoc), or the filament may be attached where the heterocyst arises, and grow out at the opposite extremity into a fine hair (Rivulariaceae).

  • Nostoc sp., young colony-fila ment with heterocysts.

  • Nostoc colonies are constantly present in a special cavity of the dorsal lobe of the leaf in Azolla.

Browse other sentences examples →