Česká geologická služba
Virtual museum
Home  > Taxonomy > Plants > Fern s. l. > Horsetailes

Equisetopsida (Horsetailes)

      Equisetopsida, or Sphenopsida, is a class of plants with a fossil record going back to the Devonian. They are commonly known as horsetails. Living species typically grow in wet areas, with needle-like leaves radiating at regular intervals from a single vertical stem. The Equisetopsida were formerly regarded as a separate division of spore plants and also called Equisetophyta, Arthrophyta or Sphenophyta; today they have been recognized as rather close relatives of the typical ferns (Pteridopsida) and form a specialized lineage of the Pteridophyta.

Source: http://en.wikipedia.org/wiki/Equisetopsida
Annularia carinata ZŠ888
Annularia mucronata ZŠ311
Annularia radiata ZŠ800
Annularia radiata ZŠ778
Annularia radiata karvinensis p4649
Annularia ZŠ339
Annularia WA306
Annularia WA203
Annularia sphenophylloides Zenker ZŠ335
Annularia sphenophylloides Zenker ZŠ518
Annularia sphenophylloides Zenker ZŠ469
Annularia sphenophylloides Zenker ZŠ345
Annularia sphenophylloides Zenker ZŠ338
Annularia sphenophylloides Zenker ZŠ328
Annularia spicataŠimůnek (2022), PL. 6, Fig. 2 ZŠ887
Annularia spinulosaŠimůnek (2022), PL. 6, Fig. 3 ZŠ886
Annularia stellata WA308
Annularia stellatafoto ZŠ317
Annularia stellataŠimůnek (1994), Pl. I, fig. 4foto ZŠ39
Annularia stellata ZV329

Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]