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Top: Science: Biology: Flora and Fauna: Plantae: Equisetophyta (41)

DescriptionAlso known as horsetails. The fossil record of the Equisetophyta dates back to the upper Devonian, with a peak in abundance and diversification during the Carboniferous. Today, Equisetum is the sole extant genus, with approximately 15 species, that are divided into two subgenera, Equisetum and Hippochaete. Equisetum has an underground rhizome from which adventitious roots and an upright, photosynthetic stem with whorls of microphylls grow.

Equisetum (39)

See also:

Science: Biology: Flora and Fauna: Plantae: Pteridophyta (5)

This category in other languages
- Dutch

Equisetaceae - General description of this family of terrestrial, herbaceous, homosporous vascular plants, comprising a single genus with about 15 species. Includes photos of several Equisetum species.
Horsetails - Equisetaceae - Brief description of the horsetail family, including descriptions of several Equisetum species.

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Last update: Apr 28, 2012 18:35:10. Phy.org is a private web site, powered by the Open Directory Project.