familyParkeriaceae
Show Lower Taxa
Difference between revisions of "Parkeriaceae"
Common names: Water Fern Family
Treatment appears in FNA Volume 2. Treatment on page 119.
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Revision as of 16:46, 18 September 2019
Plants short-lived, rooted or floating. Stems erect, bearing a few thin scales. Leaves dimorphic, erect to spreading, with adventitious bud initials or small plantlets along margins; proximal leaves sterile, herbaceous, venation reticulate, without included veinlets; distal leaves fertile, larger than sterile leaves; segments revolute, covering sporangia. Sporangia abaxial, thin-walled, with mixed development, bearing 0–71 indurate annulus cells. Spores yellow, 16 or 32 per sporangium, 70–150 µm diam. Gametophytes terrestrial, green, asymmetrically cordate.
Distribution
Tropical, subtropical, and warm temperate regions worldwide.
Discussion
Genus 1, species 3–4 (3 species in the flora).
Selected References
Lower Taxa
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