| Lygodiaceae | ||
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Fronds vinelike, of indeterminate growth, pinnae reduced to short stalks, each bearing a pair of opposite pinnules, sporangia in 2 rows, 1 on each side of midvein of contracted, oblong, marginal lobes of ultimate segments, covered by hoodlike flap of tissue serving as indusium. Here only Lygodium.
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| Lygodium | ||
Climbing fern | ||
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Etymology
Greek: lygodes, meaning flexible, because the rachis is flexuous, meaning it bends alternately from side to side
Description
Rhizome: creeping, branching, short, blackish hairs.
Frond: deciduous, monomorphic. Stipe: twining, vascular bundles: 1, a simple cylinder. Blade: 2-pinnate, twining rachis, palmate or pinnate pinnae. Pinnae: alternate, veins free. Sori: , indusium: false, hood-shaped, sporangia: in 2 rows.
Distinctive Characteristics
the twining nature of the stipe and rachis
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