View source for Astilbe biternata

{{Treatment/ID
|accepted_name=Astilbe biternata
|accepted_authority=(Ventenat) Britton ex Kearney
|publications={{Treatment/Publication
|title=Bull. Torrey Bot. Club
|place=20: 475. 1893,
}}
|basionyms={{Treatment/ID/Basionym
|name=Tiarella biternata
|authority=Ventenat
|publication_title=Jard. Malmaison
|publication_place=1: plate 54. 1804
}}
|synonyms={{Treatment/ID/Synonym
|name=Astilbe crenatiloba
|authority=(Britton) Small
}}
|hierarchy=Saxifragaceae;Astilbe;Astilbe biternata
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Saxifragaceae]]</div><div class="higher-taxon"><small>genus</small>[[Astilbe]]</div><div class="higher-taxon"><small>species</small>[[Astilbe biternata]]</div></div>
|volume=Volume 8
|mention_page=
|treatment_page=page 129
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Leaves </b>coarse, terminal leaflets usually 3-lobed, or at least 2-lobed, even if weakly or unevenly; petiole, rachis, and petiolules usually stipitate-glandular. <b>Leaflets</b> petiolulate; blade ovate, 8–15 × 4–15 cm, base usually cordate, rarely cuneate, margins sharply serrate to crenate, apex acuminate. <b>Flowers</b>: sepals persistent, triangular, 0.7–1.5 mm; petals 5 or absent in pistillate flowers, erect, spatulate to subulate, 1.5–4 mm. <b>Capsules</b> partly connate, or separating as 2 follicles, 3.5–4 mm. <b>Seeds</b> 5–10, linear, 1.5–2 mm. <b>2n</b> = 28.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun.
|habitat=Rich woods and shaded north-facing road banks, ditches and seeps
|elevation=300-1200 m
|distribution=Ga.;Ky.;N.C.;S.C.;Tenn.;Va.;W.Va.
|discussion=<p><i>Astilbe biternata</i> is known from the southern Appalachian Mountains from Mingo County, West Virginia, through Virginia and Kentucky to the Carolinas, Tennessee, and northwestern Georgia.</p><!--
--><p>Elegant when in flower, although rarely cultivated, <i>Astilbe biternata</i> is often confused with goat’s-beard, <i>Aruncus dioicus</i> (Walter) Fernald (<i>Rosaceae</i>), which grows in identical habitats and often side-by-side. Remarkably, both are dioecious with relatively large compound leaves and terminal panicles of relatively small, white, unisexual flowers. Elsewhere in the world, <i>Astilbe</i> species generally have bisexual flowers; <i>Aruncus dioicus</i> is dioecious around the world. <i>Astilbe biternata</i> flowers just after <i>Aruncus</i>, and may be further distinguished by its three-lobed terminal leaflets, glandular hairs, ten rather than 15 stamens, and usually two- rather than three-carpellate fruits.</p><!--
--><p><i>Astilbe</i> crenatiloba has been recognized from the rich, wooded lower slopes of the Tennessee side of Roan Mountain on the North Carolina–Tennessee border as being shorter, with crenate leaves, and fruits to 3 mm long. Although it seems to have distinctive features, it may be just a local variant. It is represented only by its original two herbarium specimens and has not been seen since its discovery, published in 1888, despite repeated searches.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Astilbe biternata
|author=
|authority=(Ventenat) Britton ex Kearney
|rank=species
|parent rank=genus
|synonyms=Astilbe crenatiloba
|basionyms=Tiarella biternata
|family=Saxifragaceae
|phenology=Flowering Jun.
|habitat=Rich woods and shaded north-facing road banks, ditches and seeps
|elevation=300-1200 m
|distribution=Ga.;Ky.;N.C.;S.C.;Tenn.;Va.;W.Va.
|reference=None
|publication title=Bull. Torrey Bot. Club
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V8/V8_258.xml
|genus=Astilbe
|species=Astilbe biternata
}}<!--

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