View source for Polygonum bidwelliae

{{Treatment/ID
|accepted_name=Polygonum bidwelliae
|accepted_authority=S. Watson
|publications={{Treatment/Publication
|title=Proc. Amer. Acad. Arts
|place=14: 294. 1879
|year=1879
}}
|common_names=Bidwell’s knotweed
|basionyms=
|synonyms=
|hierarchy=Polygonaceae;Polygonaceae subfam. Polygonoideae;Polygonum;Polygonum sect. Duravia;Polygonum bidwelliae
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Polygonaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Polygonaceae subfam. Polygonoideae]]</div><div class="higher-taxon"><small>genus</small>[[Polygonum]]</div><div class="higher-taxon"><small>section</small>[[Polygonum sect. Duravia]]</div><div class="higher-taxon"><small>species</small>[[Polygonum bidwelliae]]</div></div>
|volume=Volume 5
|mention_page=page 561
|treatment_page=page 565
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs.</b> Stems erect, green, simple or divaricately branched, ± wiry, 2–20 cm, minutely papillose-scabridulous. <b>Leaves</b> crowded at branch tips, not articulated to ocreae, basal leaves caducous or persistent, distal leaves abruptly reduced to bracts; ocrea 8–13 mm, papillose-scabridulous, proximal part cylindric, distal part overlapping and obscuring leaves and flowers, silvery, entire or shallowly dentate; petiole absent; blade 3-veined, without pleats, linear, 5–15(–20) × 0.5–1.5(–2) mm, margins revolute, papillose-denticulate, apex spine-tipped. <b>Inflorescences</b> axillary; cymes in distal axils, 1-flowered. <b>Pedicels</b> absent. <b>Flowers</b> closed; perianth 2–3 mm; tube 10–18% of perianth length; tepals overlapping, pink with pink or white margins, petaloid, elliptic, navicular, apex acute to acuminate; midveins unbranched; stamens 8. <b>Achenes</b> enclosed in perianth at maturity, light brown to brown, ovate-elliptic, 1.8–2.3 mm, faces subequal, shiny, smooth.</span><!--

-->{{Treatment/Body
|phenology=Flowering May–Jun.
|habitat=Thin volcanic soils, chaparral, montane woodland valleys, grasslands
|elevation=60-1200 m
|distribution=Calif.
|discussion=<p><i>Polygonum bidwelliae</i> occurs in the Cascade Range and northeastern Sacramento Valley in Butte, Shasta, and Tehama counties.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Polygonum bidwelliae
|authority=S. Watson
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Polygonaceae
|phenology=Flowering May–Jun.
|habitat=Thin volcanic soils, chaparral, montane woodland valleys, grasslands
|elevation=60-1200 m
|distribution=Calif.
|reference=None
|publication title=Proc. Amer. Acad. Arts
|publication year=1879
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V5/V5_1153.xml
|subfamily=Polygonaceae subfam. Polygonoideae
|genus=Polygonum
|section=Polygonum sect. Duravia
|species=Polygonum bidwelliae
}}<!--

-->[[Category:Treatment]][[Category:Polygonum sect. Duravia]]