Cibotium

Mexican Tree Fern ( Cibotium schiedei )

Cibotium is a genus of tree ferns ( Cyatheales ). It is the only genus of Cibotiaceae family and is also known as Schatullenfarn.

Features

The species of the genus Cibotium have a massive rhizome is creeping, ascending or erect and up to 6 m high. The rhizome has a Solenostele or Dictyostele. At Apex, they that wear soft yellow hair. The whole rhizome is occupied with the remaining leaf bases of the fallen leaves. The leaves are usually 2 to 4 m long. The petioles are hairy at the base. You have three corrugated vascular bundles, which together form an omega. The leaf blades are bipinnate or twice pinnately divided, even multiple times. The secondary and tertiary blade axes are grooved on the surface. The nerves terminate free, they are simple or forked or feathery. You have stomata three companion cells.

The sori are on the leaf margin ( marginal) at the ends of the nerves. The indusia are zweiklappig, each with an outer and an inner indusium not green, tongue-shaped indusium. The paraphyses (sterile filaments ) are thready. The spores are globose - tetrahedral, with well-defined edges and a distinct equatorial brim.

The antheridial walls are fünfzellig.

The basic chromosome number is x = 68

Dissemination

The genus occurs on both sides of the Pacific: East Asia, Malaysia's, Hawaii, southern Mexico and Central America. The species grow terrestrially.

System

  • Called Chinese Schatullenfarn, also Vegetabilisches lamb ( Cibotium barometz (L.) Sm ), Origin: Southern China, Taiwan, Malayan Archipelago
  • Hawaianischer Schatullenfarn ( Cibotium glaucum (Sm. ) Hook & Arn. . ), Origin: Hawaii
  • Cibotium shelves procure for. & Lem, home. Mexico
  • Mexican Tree Fern ( Cibotium schiedei Schltdl & Cham.. ), Origin: Mexico and Guatemala

Documents

  • Alan R. Smith, Kathleen M. Pryer, Eric Schuettpelz, Petra coral, Harald Schneider, Paul G. Wolf: A classification for extant ferns. In: taxon. Volume 55, No. 3, 2006, ISSN 0040-0262, pp. 705-731, Abstract, PDF file.
  • Walter Erhardt et al: The big walleye. Encyclopedia of plant names. Volume 2 Eugen Ulmer Verlag, Stuttgart, 2008. ISBN 978-3-8001-5406-7
Leptosporangiate fern Stele (biology) Sorus Antheridium Dicksoniaceae
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