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Lycophyta (division)
Nota de aplicación
Small plant distinguished by the club-like shape of its upright fertile spore-cases and the very small microphylls, a kind of leaf that arose and evolved independently from the leaves of other vascular plants; the microphyll has only a single unbranched strand of vascular tissue. While this division is a small and inconspicuous group of plants today, in the Carboniferous some lycophytes were forest-forming trees more than 35 meters tall. Lycophyt…
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