View source for Pteridium aquilinum var. pubescens

{{Treatment/ID
|accepted_name=Pteridium aquilinum var. pubescens
|accepted_authority=L. Underwood
|publications={{Treatment/Publication
|title=Native Ferns ed. 6
|place=91. 1900
|year=1900
}}
|common_names=Western bracken
|basionyms={{Treatment/ID/Basionym
|name=Pteris aquilina var. pubescens
|authority=(L. Underwood) Clute
|rank=variety
|publication_title=Fern Bull.
|publication_place=8: 37. 1900
}}
|synonyms=
|hierarchy=Dennstaedtiaceae;Pteridium;Pteridium aquilinum;Pteridium aquilinum var. pubescens
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Dennstaedtiaceae]]</div><div class="higher-taxon"><small>genus</small>[[Pteridium]]</div><div class="higher-taxon"><small>species</small>[[Pteridium aquilinum]]</div><div class="higher-taxon"><small>variety</small>[[Pteridium aquilinum var. pubescens]]</div></div>
|volume=Volume 2
|mention_page=page 203
|treatment_page=
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="petiole some measurement"><b>Petiole </b>10–100 cm.</span> <span class="statement" id="st-d0_s1" data-properties="blade shape;blade shape;blade length;blade width"><b>Blade </b>ovate-triangular to nearly pentagonal, 3-pinnate to 3-pinnate-pinnatifid, 30–200 × 15–100 cm;</span> <span class="statement" id="st-d0_s2" data-properties="hair quantity;hair arrangement or shape;hair architecture or arrangement;hair orientation">blades, rachises, and costae usually densely covered abaxially with abundant, contorted, lax, spreading hairs.</span> <span class="statement" id="st-d0_s3" data-properties="pinna shape;distal pinna shape"><b>Pinnae </b>(proximal) triangular, distal pinnae oblong;</span> <span class="statement" id="st-d0_s4" data-properties="pinna segment l w ratio;longer ultimate segment width">terminal segment of each pinna ca. 4 times longer than wide, longer ultimate segments less than their width apart, ca. 1.5–5 mm wide.</span> <span class="statement" id="st-d0_s5" data-properties="angle quantity"><b>Pinnules </b>at nearly 90° angle to costa;</span> <span class="statement" id="st-d0_s6" data-properties="ultimate segment reproduction;ultimate segment fusion;ultimate segment shape;ultimate segment orientation">fertile ultimate segments adnate or equally decurrent and surcurrent.</span> <span class="statement" id="st-d0_s7" data-properties="outer indusium architecture or shape;outer indusium pubescence"><b>Outer </b>indusia entire, pilose on margin and surface, hairs like those of axes.</span><!--

-->{{Treatment/Body
|habitat=In dry to moist woods and open areas in partial to full sun, forming abundant colonies
|elevation=0–3000 m
|distribution=Alta.;B.C.;Alaska;Ariz.;Calif.;Colo.;Idaho;Mont.;Nev.;N.Mex.;Oreg.;S.Dak.;Tex.;Utah;Wash.;Wyo.;Mexico in Baja California;Chihuahua;and Durango
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Pteridium aquilinum var. pubescens
|authority=L. Underwood
|rank=variety
|parent rank=species
|synonyms=
|basionyms=Pteris aquilina var. pubescens
|family=Dennstaedtiaceae
|habitat=In dry to moist woods and open areas in partial to full sun, forming abundant colonies
|elevation=0–3000 m
|distribution=Alta.;B.C.;Alaska;Ariz.;Calif.;Colo.;Idaho;Mont.;Nev.;N.Mex.;Oreg.;S.Dak.;Tex.;Utah;Wash.;Wyo.;Mexico in Baja California;Chihuahua;and Durango
|reference=None
|publication title=Native Ferns ed. 6
|publication year=1900
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V2/V2_458.xml
|genus=Pteridium
|species=Pteridium aquilinum
|variety=Pteridium aquilinum var. pubescens
|angle quantity=90
|blade length=30cm;200cm
|blade shape=ovate-triangular;nearly pentagonal 3-pinnate
|blade width=15cm;100cm
|distal pinna shape=oblong
|hair architecture or arrangement=lax
|hair arrangement or shape=contorted
|hair orientation=spreading
|hair quantity=abundant
|longer ultimate segment width=1.5mm;5mm
|outer indusium architecture or shape=entire
|outer indusium pubescence=pilose
|petiole some measurement=10cm;100cm
|pinna segment l w ratio=4
|pinna shape=triangular
|ultimate segment fusion=adnate
|ultimate segment orientation=surcurrent
|ultimate segment reproduction=fertile
|ultimate segment shape=decurrent
}}<!--

-->[[Category:Treatment]][[Category:Pteridium aquilinum]]