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Mind map 21 EJ Ratliff (Concepts, Early vascular plants, Lycophytes,…
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Equisetophytes
15 extant species... Horsetails, scouring rushes
Up to 10 M, usu. Less than 1 M.
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Origins
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Telome… planation, webbing
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Monilophytes
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30 kilobase inversion, large single copy region of plastid dna
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Rhyniophytes = epid. W/ cuticle, paren. Cortex, simple xylem, swollen branch ends, homosporous
Much larger, more complex
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Xylem-exarch protostele...center metaxylem, outer margin protoxylem
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Lateral sporangia, exarch protosteles
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