Equisetopsida | Ferns, Horsetails & Lycopods | Britannica
WEBEquisetopsida, (division Pteridophyta), class of primitive spore-bearing vascular plants. Most members of the group are extinct and known only from their fossilized remains.
Equisetidae - Wikipedia
WEBEquisetidae 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.
Equisetopsida - Evolution, Classification, Spore-Producing
WEBExtinct scrambling or vinelike understory plants, 1 metre (3 feet) tall, with small, wedge-shape leaves; 2 families: Sphenophyllaceae and Cheirostrobaceae.
Equisetopsida - an overview | ScienceDirect Topics
WEBThe Equisetopsida [Equisetidae, Equisetales], also called the equisetophytes, sphenophytes, or sphenopsids, are a monophyletic group that diverged early in the evolution of vascular plants. As with the lycophytes, some equisetophytes of the Carboniferous period, approximately 300 million years ago, were large woody trees.
Horsetails (Class Equisetopsida) - iNaturalist
WEBEquisetopsida, or Sphenopsida, is a class of vascular plants with a fossil record going back to the Devonian. They are commonly known as horsetails. Living horsetails are represented by about twenty herbaceous species in the single genus Equisetum.
Horsetails and ferns are a monophyletic group and the closest …
WEBExtant Euphyllophytina 1,2 comprises six major monophyletic lineages: Equisetopsida (horsetails), Polypodiidae (leptosporangiate ferns), Spermatophytata (seed plants), Psilotidae (whisk ferns ...
Equitopsida (Horsetails) - The Biology Primer
WEBHorsetails (Class Equisetopsida) are plants that superficially resemble a horse’s tail. Horsetails have segmented stems with extremely reduced leaves typically appearing non-existent. When present, the leaves grow in whorls radiating from the node sheaths of the jointed stem, resembling spokes of a bicycle wheel.
Equisetophyta - SpringerLink
WEBJan 1, 2014 · The Equisetophyta (Sphenopsida, Calamophyta, Arthrophyta, or Equisetopsida) are seedless, photosynthetic, vascular plants with roots, jointed stems, and whorled leaves.
An Introduction to the Genus Equisetum (Horsetail) and the Class ...
WEBJul 2, 2012 · The 15 living species of the genus Equisetum comprise the plants commonly known as horsetails. The genus name is derived from the Latin equis, meaning horse and seta, me aning bristle, in ...
WEBThe Equisetopsida (Archaeocalamitaceae, Calamitaceae, Equisetaceae) are an ancient lineage of “seed-free” vascular plants distinguished in part by the regular alternation of whorled appendages at successive nodes, highly reduced leaves, a characteristic stele morphology, and sporangiophores (Page 1972b; Bateman 1991; Kenrick and Crane …