Hamatophyton verticillatum

Hamatophyton verticillatum is a species of the extinct Sphenophyllales horsetails.[1]

Hamatophyton verticillatum
Temporal range: Famennian–Tournaisian
Scientific classification
Kingdom:
Division:
Class:
Order:
Genus:
Species:
H. verticillatum
Binomial name
Hamatophyton verticillatum

Description

Axes of this plant are pseudomonopodial with axial trichomes or spines and nodal whorls of sterile leaves. Leaves are dimorphic and sometimes contain trichomes or spines. When mature, primary xylem is exarch and the secondary xylem lacks parenchyma.

References

  1. Thomas N. Taylor, Edith L. Taylor, Michael Krings: Paleobotany. The Biology and Evolution of Fossil Plants . Second Edition, Academic Press 2009, ISBN 978-0-12-373972-8 , p. 333


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.