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Vascular Plants - a quick review - page 8 / 12

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Phylum Polypodiophyta

Equisetaceae - horsetails, scouring rushes

Horsetails are homosporous, have green spores with hygroscopic elators, and form conspicuous green gametophytes

Phylum Polypodiophyta

Equisetaceae - some examples of native horsetails & scouring rushes

Equisetum laevigatum Smooth scouring rush

Equisetum scirpoides Dwarf horsetail

Phylum Polypodiophyta

Equisetaceae - some examples of native horsetails & scouring rushes

Equisetum arvense Field horsetail

Equisetum sylvaticum Woodland horsetail

Phylum Polypodiophyta

the true ferns

Most diverse of the vascular cryptogams, both in species number (ca. 11,000 worldwide) and form (small aquatics to trees).

Like the horsetails (which may be thought of as specialized ferns), leaves are megaphylls; blade is called a frond and the petioles as stipes.

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