FNA>Volume Importer |
FNA>Volume Importer |
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| − | --><span class="statement" id="st-d0_s0" data-properties="plant size;plant growth form or location;plant growth form or habitat"><b>Plants </b>small, floating aquatics.</span> <span class="statement" id="st-d0_s1" data-properties="stem growth form or orientation;stem architecture;root count;root derivation"><b>Stems </b>creeping, branched, bearing hairs but no true roots.</span> <span class="statement" id="st-d0_s2" data-properties="leaf architecture;leaf architecture;leaf prominence or shape;leaf architecture or shape;leaf growth form or location;leaf count;whorl count;leaf count;leaf coloration;leaf shape;leaf architecture;leaf shape;leaf orientation"><b>Leaves </b>in whorls of 3, with 2 leaves green, sessile or short-petioled, flat, entire, and floating, 1 leaf finely dissected, petiolate, rootlike, and pendent.</span> <span class="statement" id="st-d0_s3" data-properties="leaf location;indusium fixation;indusium texture"><b>Submerged </b>leaves bearing sori that surrounded by basifixed membranous indusia (sporocarps);</span> <span class="statement" id="st-d0_s4" data-properties="sporocarp count;type count;megaspore count;microsporangium count;microspore count">sporocarps of 2 types, bearing either megasporangia that few in number (ca. 10), each with single megaspore, or many microsporangia, each with 64 microspores.</span> <span class="statement" id="st-d0_s5" data-properties="spore sizes;spore architecture;kind count"><b>Spores </b>of 2 kinds and sizes, both globose, trilete.</span> <span class="statement" id="st-d0_s6" data-properties="megagametophyte prominence;microgametophyte prominence"><b>Megagametophytes </b>and microgametophytes protruding through sporangium wall;</span> <span class="statement" id="st-d0_s7" data-properties="megagametophyte growth form or location;megagametophyte orientation;surface habitat;archegonium orientation">megagametophytes floating on water surface with archegonia directed downward;</span> <span class="statement" id="st-d0_s8" data-properties="sporangium wall fixation">microgametophytes remaining fixed to sporangium wall.</span><!-- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>small, floating aquatics. <b>Stems</b> creeping, branched, bearing hairs but no true roots. <b>Leaves</b> in whorls of 3, with 2 leaves green, sessile or short-petioled, flat, entire, and floating, 1 leaf finely dissected, petiolate, rootlike, and pendent. <b>Submerged</b> leaves bearing sori that are surrounded by basifixed membranous indusia (sporocarps); sporocarps of 2 types, bearing either megasporangia that are few in number (ca. 10), each with single megaspore, or many microsporangia, each with 64 microspores. <b>Spores</b> of 2 kinds and sizes, both globose, trilete. <b>Megagametophytes</b> and microgametophytes protruding through sporangium wall; megagametophytes floating on water surface with archegonia directed downward; microgametophytes remaining fixed to sporangium wall.</span><!-- |
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| | |publication year= | | |publication year= |
| | |special status= | | |special status= |
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V2/V2_654.xml | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V2/V2_654.xml |
| − | |archegonium orientation=directed
| |
| − | |indusium fixation=basifixed
| |
| − | |indusium texture=membranous
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| − | |kind count=2
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| − | |leaf architecture=petiolate;short-petioled;sessile
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| − | |leaf architecture or shape=entire
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| − | |leaf coloration=green
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| − | |leaf count=2;1
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| − | |leaf growth form or location=floating
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| − | |leaf location=submerged
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| − | |leaf orientation=pendent
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| − | |leaf prominence or shape=flat
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| − | |leaf shape=rootlike;dissected
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| − | |megagametophyte growth form or location=floating
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| − | |megagametophyte orientation=downward
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| − | |megagametophyte prominence=protruding
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| − | |megaspore count=single
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| − | |microgametophyte prominence=protruding
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| − | |microsporangium count=many
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| − | |microspore count=64
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| − | |plant growth form or habitat=aquatics
| |
| − | |plant growth form or location=floating
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| − | |plant size=small
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| − | |root count=no
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| − | |root derivation=true
| |
| − | |sporangium wall fixation=fixed
| |
| − | |spore architecture=trilete
| |
| − | |spore sizes=globose
| |
| − | |sporocarp count=few
| |
| − | |stem architecture=branched
| |
| − | |stem growth form or orientation=creeping
| |
| − | |surface habitat=water
| |
| − | |type count=2
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| − | |whorl count=3
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| | -->[[Category:Treatment]] | | -->[[Category:Treatment]] |
Plants small, floating aquatics. Stems creeping, branched, bearing hairs but no true roots. Leaves in whorls of 3, with 2 leaves green, sessile or short-petioled, flat, entire, and floating, 1 leaf finely dissected, petiolate, rootlike, and pendent. Submerged leaves bearing sori that are surrounded by basifixed membranous indusia (sporocarps); sporocarps of 2 types, bearing either megasporangia that are few in number (ca. 10), each with single megaspore, or many microsporangia, each with 64 microspores. Spores of 2 kinds and sizes, both globose, trilete. Megagametophytes and microgametophytes protruding through sporangium wall; megagametophytes floating on water surface with archegonia directed downward; microgametophytes remaining fixed to sporangium wall.
Distribution
Mostly tropical, North America, Mexico, West Indies, Central America, South America, Eurasia, Africa including Madagascar.
Discussion
Genus 1, species 10 (1 species in the flora).
Selected References
None.
