Search results
Equisetidae is one of the four subclasses of Polypodiopsida (ferns), a group of vascular plants with a fossil record going back to the Devonian. They are commonly known as horsetails. [2] They typically grow in wet areas, with whorls of needle-like branches radiating at regular intervals from a single vertical stem.
Equisetum is a "living fossil", the only living genus of the entire subclass Equisetidae, which for over 100 million years was much more diverse and dominated the understorey of late Paleozoic forests. Some equisetids were large trees reaching to 30 m (98 ft) tall. [3]
- Polypodiopsida
- Equisetum, L.
People also ask
What is Equisetidae?
Is Equisetaceae a family?
What is a subclass Equisetidae?
Are Equisetopsida extinct?
Equisetaceae is the only surviving family of the Equisetales, a group with many fossils of large tree-like plants that possessed ribbed stems similar to modern horsetails. Pseudobornia is the oldest known relative of Equisetum; it grew in the late Devonian, about 375 million years ago and is assigned to its own order.
- Equisetaceae, Michx. ex DC.
- Plantae
Hyeniales. Sphenophyllales. Equisetopsida, (division Pteridophyta), class of primitive spore-bearing vascular plants. Most members of the group are extinct and known only from their fossilized remains. The sole living genus, Equisetum, order Equisetales, is made up of 15 species of very ancient herbaceous plants, the horsetails and scouring rushes.
Class Equisetopsida (horsetails) Extinct and living primitive, seedless, homosporous vascular plants with jointed, ribbed stems and whorls of leaves at regular intervals along the stem. †Order Hyeniales (Protoarticulatae) Extinct shrublike plants, with short, forked leaves in whorls; 1 family: Hyeniaceae (now placed with the Polypodiopsida ...
Equisetum L. Equisetum. First published in Sp. Pl.: 1061 (1753) This genus is accepted. The native range of this genus is Cosmopolitan. Taxonomy. Images. General information. Distribution.
Order of ferns / From Wikipedia, the free encyclopedia. Equisetales is an order of subclass Equisetidae with only one living family, Equisetaceae, containing the genus Equisetum (horsetails), as well as a variety of extinct groups, including the tree-like Calamitaceae. Quick Facts Scientific classification, Families ... Equisetales.
