familyLygodiaceae
Show Lower Taxa
Lygodiaceae
Common names: Climbing Ferns
Treatment appears in FNA Volume 2. Treatment on page 114.
Revision as of 13:11, 27 July 2019 by FNA>Volume Importer
Plants terrestrial. Stems subterranean, protostelic; indument of dark, dense hairs. Leaves vinelike, of indeterminate growth. Pinnae reduced to short stalks, each bearing a pair of opposite pinnules, usually with an often dormant apical bud. 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. Spores tetrahedral-globose, trilete, rarely monolete. Gametophytes terrestrial, cordate, glabrous.
Distribution
Tropical regions nearly worldwide and temperate regions of North America and Asia, s Africa, Pacific Islands in New Zealand.
Discussion
Genus 1, species ca. 40 (3 species in the flora).
Selected References
None.
Lower Taxa
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