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| − | --><span class="statement" id="st-d0_s0" data-properties="plant growth form or habitat"><b>Plants </b>terrestrial, often forming colonies or thickets.</span> <span class="statement" id="st-d0_s1" data-properties="stem location;stem size;stem growth form or orientation"><b>Stems </b>subterranean, slender, long-creeping;</span> <span class="statement" id="st-d0_s2" data-properties="hair coloration;hair coloration;hair coloration;hair architecture">hairs pale to dark, jointed;</span> <span class="statement" id="st-d0_s3" data-properties="scale count">scales absent;</span> <span class="statement" id="st-d0_s4" data-properties="vessel derivation;vessel count">true vessels present (absent in other Dennstaedtiaceae genera in the flora).</span> <span class="statement" id="st-d0_s5" data-properties="leaf arrangement;leaf shape;leaf some measurement"><b>Leaves </b>widely spaced, broadly deltate, 0.5–4.5 m.</span> <span class="statement" id="st-d0_s6" data-properties="petiole pubescence;petiole pubescence;petiole pubescence;vascular-bundle count;vascular-bundle shape;vascular-bundle shape"><b>Petiole </b>glabrous to short-hairy, without prickles, with stem buds near base, vascular-bundles numerous, U or O-shaped in cross-section.</span> <span class="statement" id="st-d0_s7" data-properties="blade architecture or shape;rachis architecture;costa architecture"><b>Blade </b>2–4-pinnate, rachis and costae grooved adaxially;</span> <span class="statement" id="st-d0_s8" data-properties="">rachis without prickles;</span> <span class="statement" id="st-d0_s9" data-properties="pinna position;pinna position or shape">nectaries at base of proximal and sometimes distal pinnae.</span> <span class="statement" id="st-d0_s10" data-properties="segment shape;ultimate segment shape;ultimate segment shape;ultimate segment shape;ultimate segment shape;margin architecture or shape"><b>Segments </b>pinnately divided, ultimate segments ovate to oblong to linear, base extending proximally on costae (decurrent) or proximally (surcurrent), margins entire.</span> <span class="statement" id="st-d0_s11" data-properties="vein fusion;vein fusion;vein shape"><b>Veins </b>free or joined at margin by commissural vein beneath sori, pinnately 2–3-forked.</span> <span class="statement" id="st-d0_s12" data-properties="sorus architecture;outer false inner indusium orientation;outer false inner indusium prominence;outer false inner indusium dehiscence or orientation;outer false inner indusium derivation"><b>Sori </b>± continuous, covered by recurved, outer false indusium and obscure, extrorse, inner true indusium.</span> <span class="statement" id="st-d0_s13" data-properties=""><b>Spores </b>tetrahedral-globose, trilete, very finely granulate.</span> <span class="statement" id="st-d0_s14" data-properties="spore shape;spore architecture;spore texture;x chromosome count">x = 26.</span><!-- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>terrestrial, often forming colonies or thickets. <b>Stems</b> subterranean, slender, long-creeping; hairs pale to dark, jointed; scales absent; true vessels present (absent in other Dennstaedtiaceae genera in the flora). <b>Leaves</b> widely spaced, broadly deltate, 0.5–4.5 m. <b>Petiole</b> glabrous to short-hairy, without prickles, with stem buds near base, vascular bundles numerous, U- or O-shaped in cross section. <b>Blade</b> 2–4-pinnate, rachis and costae grooved adaxially; rachis without prickles; nectaries at base of proximal and sometimes distal pinnae. <b>Segments</b> pinnately divided, ultimate segments ovate to oblong to linear, base extending proximally on costae (decurrent) or proximally (surcurrent), margins entire. <b>Veins</b> free or joined at margin by commissural vein beneath sori, pinnately 2–3-forked. <b>Sori</b> ± continuous, covered by recurved, outer false indusium and obscure, extrorse, inner true indusium. <b>Spores</b> tetrahedral-globose, trilete, very finely granulate. <b>x</b> = 26.</span><!-- |
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| | |publication year=1760 | | |publication year=1760 |
| | |special status= | | |special status= |
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V2/V2_803.xml | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V2/V2_803.xml |
| | |genus=Pteridium | | |genus=Pteridium |
| − | |blade architecture or shape=2-4-pinnate
| |
| − | |costa architecture=grooved
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| − | |hair architecture=jointed
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| − | |hair coloration=pale;dark
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| − | |leaf arrangement=spaced
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| − | |leaf shape=deltate
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| − | |leaf some measurement=0.5m;4.5m
| |
| − | |margin architecture or shape=entire
| |
| − | |outer false inner indusium dehiscence or orientation=extrorse
| |
| − | |outer false inner indusium derivation=true
| |
| − | |outer false inner indusium orientation=recurved
| |
| − | |outer false inner indusium prominence=obscure
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| − | |petiole pubescence=glabrous;short-hairy
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| − | |pinna position=proximal
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| − | |pinna position or shape=distal
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| − | |plant growth form or habitat=terrestrial
| |
| − | |rachis architecture=grooved
| |
| − | |scale count=absent
| |
| − | |segment shape=divided
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| − | |sorus architecture=continuous
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| − | |spore architecture=trilete
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| − | |spore shape=tetrahedral-globose
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| − | |spore texture=granulate
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| − | |stem growth form or orientation=long-creeping
| |
| − | |stem location=subterranean
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| − | |stem size=slender
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| − | |ultimate segment shape=ovate;oblong
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| − | |vascular-bundle count=numerous
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| − | |vascular-bundle shape=o-shaped;u
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| − | |vein fusion=joined;free
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| − | |vein shape=2-3-forked
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| − | |vessel count=present
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| − | |vessel derivation=true
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| − | |x chromosome count=26
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| | -->[[Category:Treatment]][[Category:Dennstaedtiaceae]] | | -->[[Category:Treatment]][[Category:Dennstaedtiaceae]] |
Plants terrestrial, often forming colonies or thickets. Stems subterranean, slender, long-creeping; hairs pale to dark, jointed; scales absent; true vessels present (absent in other Dennstaedtiaceae genera in the flora). Leaves widely spaced, broadly deltate, 0.5–4.5 m. Petiole glabrous to short-hairy, without prickles, with stem buds near base, vascular bundles numerous, U- or O-shaped in cross section. Blade 2–4-pinnate, rachis and costae grooved adaxially; rachis without prickles; nectaries at base of proximal and sometimes distal pinnae. Segments pinnately divided, ultimate segments ovate to oblong to linear, base extending proximally on costae (decurrent) or proximally (surcurrent), margins entire. Veins free or joined at margin by commissural vein beneath sori, pinnately 2–3-forked. Sori ± continuous, covered by recurved, outer false indusium and obscure, extrorse, inner true indusium. Spores tetrahedral-globose, trilete, very finely granulate. x = 26.
Distribution
Almost worldwide.
Discussion
Species 1 (1 species, 4 varieties in the flora).