View source for Sidotheca

{{Treatment/ID
|accepted_name=Sidotheca
|accepted_authority=Reveal
|publications={{Treatment/Publication
|title=Harvard Pap. Bot.
|place=9: 211. 2004
|year=2004
}}
|common_names=Starry puncturebract
|basionyms={{Treatment/ID/Basionym
|name=Oxytheca sect. Neoxytheca
|authority=Ertter
|rank=section
|publication_title=Brittonia
|publication_place=32: 92. 1980
}}
|synonyms=
|hierarchy=Polygonaceae;Polygonaceae subfam. Eriogonoideae;Sidotheca
|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>[[Sidotheca]]</div></div>
|etymology=Greek sidus, star, and theke, case, alluding to starlike involucres
|volume=Volume 5
|mention_page=page 221, 474
|treatment_page=page 439
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> annual; taproots slender. <b>Stems</b> arising directly from the root, spreading or prostrate, sometimes erect, solid, not fistulose or disarticulating into ringlike segments, glabrous or sparsely glandular. <b>Leaves</b> persistent or quickly deciduous, basal, rosulate; petioles indistinct; blade broadly linear or spatulate to oblanceolate, margins entire, strigose and glandular. <b>Inflorescences</b> terminal, cymose; branches mostly dichotomous, not brittle or disarticulating into segments, round, glabrous or sparsely glandular; bracts (2–)3(–4) at first node, 2–3 at distal nodes, distinct or connate, often positioned to side of node, scalelike, triangular or linear to ovate and 3-lobed, awned, sparsely glandular. <b>Peduncles</b> present or absent, erect to spreading. <b>Involucres</b> 1 per node, not ribbed, tubular, narrowly turbinate to funnelform; teeth 5(–6), awn-tipped. <b>Flowers</b> 2–5(–10) per involucre at any single time during full anthesis; perianth white to rose or greenish yellow to red, funnelform when open, tubular when closed, hirsute and sparsely glandular abaxially; tepals 6, connate 1/4–1/3 their length, monomorphic, 3–5-lobed or laciniate apically; stamens 9; filaments basally adnate, glabrous or minutely papillate basally; anthers red to maroon, ellipsoid or oblong to oval. <b>Achenes</b> usually included, golden- to red-brown, not winged, 3-gonous, glabrous. <b>Seeds</b>: embryo curved. <b>x</b> = 20.</span><!--

-->{{Treatment/Body
|distribution=Calif.;nw Mexico.
|discussion=<p>Species 3 (3 in the flora).</p><!--
--><p><i>Sidotheca</i> is allied to <i>Eriogonum </i>subg.<i> Ganysma</i>, approaching <i>E. inerme</i> in terms of foliar and overall habit. The trilobed to laciniate tepals resemble those of certain species of <i>Chorizanthe</i>. It is possible, as B. Ertter (1980) suggested, that the taxon was derived from <i>Acanthoscyphus</i>. In the 1950s, G. J. Goodman (1904–1999) proposed its recognition at generic rank, using the parahomonym “Neoxytheca.”</p>
|tables=
|references={{Treatment/Reference
|id=ertter1980a
|text=Ertter, B. 1980. A revision of the genus Oxytheca (Polygonaceae). Brittonia 32: 70–102.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Involucres funnelform, white-margined, bracts connate more than 3/ 4 their length; tepals 3-5-lobed apically, lobes laciniate
|[[Sidotheca emarginata|Sidotheca emarginata]]
|-id=key-0-1
|1
|Involucres narrowly to broadly turbinate, concolored, bracts connate ca. 1/ 2 their length; tepals 3-lobed apically, lobes laciniate or not
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Perianths 1-2 mm, greenish yellow to red; tepals 3-lobed apically 1/ 5 their length; peduncles present or absent; awns of involucral bracts 0.3-1 mm; awns of inflorescence bracts 0.2-0.5 mm
|[[Sidotheca caryophylloides|Sidotheca caryophylloides]]
|-id=key-0-2
|2
|Perianths 2.5-4 mm, white to pink; tepals 3-lobed apically 1/ 1/ 2 their length; peduncles present; awns of involucral bracts 0.3-2 mm; awns of inflorescence bracts 0.8-1 mm
|[[Sidotheca trilobata|Sidotheca trilobata]]
|}
</div></div><!--

-->{{#Taxon:
name=Sidotheca
|author=James L. Reveal
|authority=Reveal
|rank=genus
|parent rank=subfamily
|synonyms=
|basionyms=Oxytheca sect. Neoxytheca
|family=Polygonaceae
|distribution=Calif.;nw Mexico.
|reference=ertter1980a
|publication title=Harvard Pap. Bot.
|publication year=2004
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V5/V5_917.xml
|subfamily=Polygonaceae subfam. Eriogonoideae
|genus=Sidotheca
}}<!--

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