View source for Dedeckera

{{Treatment/ID
|accepted_name=Dedeckera
|accepted_authority=Reveal & J. T. Howell
|publications={{Treatment/Publication
|title=Brittonia
|place=28: 245, fig. 1. 1976
|year=1976
}}
|common_names=Eureka or July gold
|basionyms=
|synonyms=
|hierarchy=Polygonaceae;Polygonaceae subfam. Eriogonoideae;Dedeckera
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Polygonaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Polygonaceae subfam. Eriogonoideae]]</div><div class="higher-taxon"><small>genus</small>[[Dedeckera]]</div></div>
|etymology=for Mary Caroline DeDecker, 1909–2000, noted California conservationist
|volume=Volume 5
|mention_page=page 220, 323
|treatment_page=page 430
}}<!--

--><span class="statement" id="st-undefined" data-properties="">Shrubs; taproot stout. <b>Stems</b> spreading, woody, hirsutulous; caudex absent; aerial flowering stems spreading, herbaceous, hirsutulous. <b>Leaves</b> usually persistent through anthesis, 1 per node, cauline, alternate; petiole present, blade narrow to broadly elliptic, margins entire. <b>Inflorescences</b> terminal, cymose; branches dichotomous, not brittle or disarticulating into segments, round, hirsutulous, each node with 1 short-pedicellate flower and 4–12 sessile or subsessile flowers; bracts 3–4 at proximal nodes and leaflike, 2–3 at distal nodes and scalelike, distinct, hirsutulous. <b>Peduncles</b> erect, slender. <b>Involucral</b> bracts obscure, in 2 whorls of 3 plus 2 lobes at proximal nodes, distinct, reduced to 2 lobes at distal nodes, not awn-tipped. <b>Flowers</b> 4–6 per involucral cluster, sessile or pedicellate; perianth yellow to reddish yellow, broadly campanulate when open, narrowly urceolate when closed, hispidulous abaxially; tepals 6, slightly dimorphic, those of outer whorl broader and longer than those of inner whorl, entire apically; stamens 9; filaments basally adnate, pilose basally; anthers yellow, oblong. <b>Achenes</b>, light reddish brown, not winged, 3-gonous, pubescent apically. <b>Seeds</b>: embryo curved. <b>x</b> = 20.</span><!--

-->{{Treatment/Body
|distribution=Calif.
|discussion=<p>Species 1.</p><!--
--><p><i>Dedeckera</i> is rare but not endangered or threatened, primarily because most populations are in remote areas along sides of steep canyon walls. Most populations occur in areas managed by the Bureau of Land Management, the United States Forest Service, or the National Park Service. The plants rarely produce mature achenes (D. Wiens et al. 1989). The genus is allied to <i>Eriogonum </i>subg.<i> Eucycla</i>.</p>
|tables=
|references={{Treatment/Reference
|id=nickrent1989a
|text=Nickrent, D. L. and D. Wiens. 1989. Genetic diversity in the rare California shrub Dedeckera eurekensis (Polygonaceae). Syst. Bot. 14: 245–253.
}}{{Treatment/Reference
|id=wiens1986a
|text=Wiens, D., M. DeDecker, and C. D. Wiens. 1986. Observations on the pollination of Dedeckera eurekensis (Polygonaceae). Madroño 33: 302–305.
}}{{Treatment/Reference
|id=wiens1988a
|text=Wiens, D., C. I. Davern, and C. L. Calvin. 1988. Exceptionally low seed set in Dedeckera eurekensis: Is there a genetic component of extinction? In: C. A. Hall and V. Doyle-Jones, eds. 1988. Plant Biology of Eastern California. Los Angeles. Pp. 19–29.
}}{{Treatment/Reference
|id=wiens1989a
|text=Wiens, D. et al. 1989. Developmental failure and loss of reproductive capacity in the rare palaeoendemic shrub Dedeckera eurekensis. Nature 338: 65–67.
}}{{Treatment/Reference
|id=wiens2004a
|text=Wiens, D., L. Allphin, D. H. Mansfield, and G. Thackray. 2004. Developmental failure and loss of reproductive capacity as a factor in extinction: A nine-year study of Dedeckera eurekensis (Polygonaceae). Aliso 21: 55–63.
}}
}}<!--

--><!--

-->{{#Taxon:
name=Dedeckera
|author=James L. Reveal
|authority=Reveal & J. T. Howell
|rank=genus
|parent rank=subfamily
|synonyms=
|basionyms=
|family=Polygonaceae
|distribution=Calif.
|reference=nickrent1989a;wiens1986a;wiens1988a;wiens1989a;wiens2004a
|publication title=Brittonia
|publication year=1976
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V5/V5_897.xml
|subfamily=Polygonaceae subfam. Eriogonoideae
|genus=Dedeckera
}}<!--

-->[[Category:Treatment]][[Category:Polygonaceae subfam. Eriogonoideae]]