Difference between revisions of "Parkeriaceae"

Hooker
Common names: Water Fern Family
Treatment appears in FNA Volume 2. Treatment on page 119.
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--><span class="statement" id="st-d0_s0" data-properties="plant duration;plant architecture;plant growth form or location"><b>Plants </b>short-lived, rooted or floating.</span> <span class="statement" id="st-d0_s1" data-properties="stem orientation;scale count;scale width"><b>Stems </b>erect, bearing a few thin scales.</span> <span class="statement" id="st-d0_s2" data-properties="leaf growth form;leaf orientation;leaf orientation;leaf orientation;plantlet size"><b>Leaves </b>dimorphic, erect to spreading, with adventitious-bud initials or small plantlets along margins;</span> <span class="statement" id="st-d0_s3" data-properties="proximal leaf reproduction;proximal leaf growth form or texture;proximal leaf architecture or coloration or relief">proximal leaves sterile, herbaceous, venation reticulate, without included veinlets;</span> <span class="statement" id="st-d0_s4" data-properties="distal leaf reproduction;distal leaf size;leaf reproduction">distal leaves fertile, larger than sterile leaves;</span> <span class="statement" id="st-d0_s5" data-properties="segment shape or vernation">segments revolute, covering sporangia.</span> <span class="statement" id="st-d0_s6" data-properties="sporangium position;sporangium architecture;annulus cell count;annulus cell texture"><b>Sporangia </b>abaxial, thin-walled, with mixed development, bearing 0–71 indurate annulus cells.</span> <span class="statement" id="st-d0_s7" data-properties="spore coloration;spore count;spore count;spore diameter"><b>Spores </b>yellow, 16 or 32 per sporangium, 70–150 µm diam.</span> <span class="statement" id="st-d0_s8" data-properties="gametophyte growth form or habitat;gametophyte coloration;gametophyte shape"><b>Gametophytes </b>terrestrial, green, asymmetrically cordate.</span><!--
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--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>short-lived, rooted or floating. <b>Stems</b> erect, bearing a few thin scales. <b>Leaves</b> 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. <b>Sporangia</b> abaxial, thin-walled, with mixed development, bearing 0–71 indurate annulus cells. <b>Spores</b> yellow, 16 or 32 per sporangium, 70–150 µm diam. <b>Gametophytes</b> terrestrial, green, asymmetrically cordate.</span><!--
  
 
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|publication year=
 
|special status=
 
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V2/V2_198.xml
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V2/V2_198.xml
|annulus cell count=0;71
 
|annulus cell texture=indurate
 
|distal leaf reproduction=fertile
 
|distal leaf size=larger
 
|gametophyte coloration=green
 
|gametophyte growth form or habitat=terrestrial
 
|gametophyte shape=cordate
 
|leaf growth form=dimorphic
 
|leaf orientation=erect;spreading
 
|leaf reproduction=sterile
 
|plant architecture=rooted
 
|plant duration=short-lived
 
|plant growth form or location=floating
 
|plantlet size=small
 
|proximal leaf architecture or coloration or relief=reticulate
 
|proximal leaf growth form or texture=herbaceous
 
|proximal leaf reproduction=sterile
 
|scale count=few
 
|scale width=thin
 
|segment shape or vernation=revolute
 
|sporangium architecture=thin-walled
 
|sporangium position=abaxial
 
|spore coloration=yellow
 
|spore count=32;16
 
|spore diameter=70um;150um
 
|stem orientation=erect
 
 
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Revision as of 14:13, 27 July 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).

Lower Taxa