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Calamodontophis - Wikipedia
WebFilicophyta Psilophyta Lycophyta Calamophyta (Pterophyta) Origin of Pteridophyta (a question that has been unsolved) 1. They are directly 2. They originate from evolved from algae: Bryophytes: from brown algae or green particularly from Anthoceros. algae (particularly the Campbell (1895) was the first filamentous to declare the anthocerotean ... WebThe four general steps in this progression are: first, male and female determination on the same sporophyll; second, bisporangiate flowers, in the angiosperms with stamens below and carpels above; third, the various types and degrees of moneciousness; and fourth, the complete diecious condition which is, however, also developed in various degrees … chndly
Smith System of Classification PDF Plant Morphology - Scribd
WebSmith (1955) Bold (1957) and others divide vascular cryptogams into five divisions viz., Psilophyta, Lycophyta, Sphenophyta, Noeggerathiophyta and Pterophyta. Some people have changed the name Lycophyta to Lepidophyta, Sphenophyta to Arthrophyta or Calamophyta and Pterophyta to Filicophyta. WebDie Calamophyten waren vor allem im Karbon und Perm mächtig entwickelt. Die Blütezeit der einzigen heute noch vertretenen Familie, der Equisetaceae, war im Trias. Download chapter PDF Literatur Sadebeck, R., Equisetaceae in Engler-Prantl, Natiirl. PflanzenfamilienI. Teil, Abt. 4, 520-548, 1. Aufl., Leipzig (1900) 1902. Google Scholar WebShaimaa N. Abd El-Fatah Lycopodium (clubmosses) Habitat and External Morphology : • the genus comprises180 species, of wide distribution. • Stem is branched or unbranched, prostrate or erect. • Sometimes, stem behaves as a rhizome from which arise erect aerial branches. • Stem densely covered with small leaves. chnd registry