Coniferophytina
Coniferophytina, Gabelnervige Nacktsamer, ca. 600 Holzgewächsarten umfassende Unterabteilung der Spermatophyta; bildet zusammen mit den Cycadophytina die Entwicklungsstufe der Gymnospermae. Merkmale: kleine gabelnervige Laubblätter, die auch nadelförmig, schuppenförmig, bandförmig oder zerteilt-flächig ausgebildet sein können; die Staubblätter (Mikrosporophylle) tragen nur einzelne Pollensackgruppen, die »Fruchtblätter« (Megasporophylle) sind einfache Samenanlagenträger. Die C. leiten sich wahrscheinlich von Progymnospermen des Devons ab. Sie haben heute noch als weit verbreitete Waldbäume große Bedeutung. Gliederung in zwei Klassen: Ginkgoopsida und Pinopsida, Nadelhölzer.

Deutsch wörterbuch der biologie. 2013.

Schlagen Sie auch in anderen Wörterbüchern nach:

  • Coniferophytina — Coniferophyta Coniferophyta, Coniferophytina Coniferophytina . a class of cone bearing gymnosperms dating from the Carboniferous; most are substantial trees; it includes the classes Pinopsida (subdivision Pinophytina) and Ginkgopsida (subdivision …   The Collaborative International Dictionary of English

  • Coniferophytina — noun cone bearing gymnosperms dating from the Carboniferous period; most are substantial trees; includes the classes Pinopsida (subdivision Pinophytina) and Ginkgopsida (subdivision Ginkgophytina) and Taxopsida (subdivision Taxophytina) which in… …   Useful english dictionary

  • subdivision Coniferophytina — noun cone bearing gymnosperms dating from the Carboniferous period; most are substantial trees; includes the classes Pinopsida (subdivision Pinophytina) and Ginkgopsida (subdivision Ginkgophytina) and Taxopsida (subdivision Taxophytina) which in… …   Useful english dictionary

  • Coniferophyta — Coniferophyta, Coniferophytina Coniferophytina . a class of cone bearing gymnosperms dating from the Carboniferous; most are substantial trees; it includes the classes Pinopsida (subdivision Pinophytina) and Ginkgopsida (subdivision… …   The Collaborative International Dictionary of English

  • class Gymnospermae — noun plants having naked seeds not enclosed in an ovary; in some systems considered a class (Gymnospermae) and in others a division (Gymnospermophyta); comprises three subdivisions (or classes): Cycadophytina (class Cycadopsida) and Gnetophytina… …   Useful english dictionary

  • division Gymnospermophyta — noun plants having naked seeds not enclosed in an ovary; in some systems considered a class (Gymnospermae) and in others a division (Gymnospermophyta); comprises three subdivisions (or classes): Cycadophytina (class Cycadopsida) and Gnetophytina… …   Useful english dictionary

  • Gymnospermae — noun plants having naked seeds not enclosed in an ovary; in some systems considered a class (Gymnospermae) and in others a division (Gymnospermophyta); comprises three subdivisions (or classes): Cycadophytina (class Cycadopsida) and Gnetophytina… …   Useful english dictionary

  • Gymnospermophyta — noun plants having naked seeds not enclosed in an ovary; in some systems considered a class (Gymnospermae) and in others a division (Gymnospermophyta); comprises three subdivisions (or classes): Cycadophytina (class Cycadopsida) and Gnetophytina… …   Useful english dictionary

  • Coniferopsida — n. same as {coniferophyta}. Syn: class Coniferopsida, Coniferophytina, subdivision Coniferophytina, Coniferophyta. [WordNet 1.5] …   The Collaborative International Dictionary of English

  • Cycadophytina — Cycadophytina, Fiederblättrige Nacktsamer, ca. 200 Arten umfassende Unterabteilung der ⇒ Spermatophyta; bildet zusammen mit den Coniferophytina die Entwicklungsstufe der Gymnospermae. Merkmale: große fiedernervige Laubblätter; die Staubblätter… …   Deutsch wörterbuch der biologie

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”