Author:
Qjure
Book:
Qjurious
Type:
Info
Chapter:
3-432.00.00
Equisetidae
Name: Equisetopsida; Equisetopsida; Arthrophyta; Sphenophyta; Sphenopsida.
English: eusporangiate ferns; Horsetails and primitive ferns.
Habitat: in wet areas.
Botany
Herbs; vascular; ± 410 million years old
Reproduction: by shedding spores; bear a protostele; having microphylls.
Stem: single, vertical.
Leaves: needle-like, radiating at regular intervals from the stem; have only a single vein.
Taxonomy
Equisetidae, Equisetopsida were formerly regarded as a separate division of spore plants. Today Equisetidae are seen as close relatives of and included in the typical ferns, Pteridopsida.
Plant theory
In the Plant theory Equisetidae is treated as a Class in the Phylum Pteridophyta.
Equisetidae has 1 Order Equisetales in Phase 1.
Equisetales has 4 Families.
Families
1. Psilotaceae: only Family in Pislotales; Whisk ferns; 2 genera, Psilotum, Tmesipteris.
4. Equisetaceae: only Family in Equisetales; 1 genus: Equisetum.
5. Marattiaceae: only Family in Marattiales; 6 genera, Angiopteris, Christensenia, Danaea, Marattia, Eupodium, Ptisana.
7. Ophioglossaceae: only Family in Ophioglossales; 4 genera, Ophioglossum, Botrychium, Helminthostachys, Mankyua.