SporePlantsEquisetales213 - Equisetales - 1 Equisetales...

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Equisetales - 1 Equisetales There is one living genus in the Equisetales: Equisetum . Equisetums are commonly called horsetails or scouring rushes; the first because some seem to look like horses' tails, the second because they were used to scour pots by many peoples. Though not conspicuous, they are quite abundant throughout the world. None exceeds about 15 feet in height; one species in Washington can reach more than 6 feet. The Equisetales are very important in the fossil record, and members of the Equisetales were once the predominant plants in the landscape. Coal is derived from fossil Equisetum relatives as well as from the fossil Lycophytes. The current is indistinguishable from its fossil ancestors, and some believe it to be the oldest surviving genus of plants (300 million years old). Characteristics of the Equisetales The Equisetums may be the most distinctive plants on earth. They have hollow, jointed stems that are impregnated with silica. This gives a rough texture,
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SporePlantsEquisetales213 - Equisetales - 1 Equisetales...

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