View source for Shinnersia rivularis

{{Treatment/ID
|accepted_name=Shinnersia rivularis
|accepted_authority=(A. Gray) R. M. King & H. Robinson
|publications={{Treatment/Publication
|title=Phytologia
|place=19: 297. 1970
|year=1970
}}
|common_names=Rio Grande bugheal
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms={{Treatment/ID/Basionym
|name=Trichocoronis rivularis
|authority=A. Gray
|rank=species
|publication_title=Mem. Amer. Acad. Arts, n. s.
|publication_place=4: 66. 1849
}}
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Eupatorieae;Shinnersia;Shinnersia rivularis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Eupatorieae]]</div><div class="higher-taxon"><small>genus</small>[[Shinnersia]]</div><div class="higher-taxon"><small>species</small>[[Shinnersia rivularis]]</div></div>
|volume=Volume 21
|mention_page=
|treatment_page=page 488
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>rooted in muck; rhizomes relatively long. <b>Stems</b> commonly submerged except for terminal 10 cm or less. <b>Leaves</b> mostly 2–4 cm. <b>Heads</b> borne out of water. <b>Corollas</b> ca. 2 mm. <b>Cypselae</b> ca. 2 mm. <b>2n</b> = 60.</span><!--

-->{{Treatment/Body
|phenology=Flowering (Dec–)Mar–May(–Aug).
|habitat=Water along streams, in slow-moving water (to 1 m deep) arising from calcareous outcrops
|elevation=50–3000 m
|distribution=Tex.;Mexico (Coahuila;Nuevo León).
|discussion=<p><i>Shinnersia rivularis</i> has been treated within <i>Trichocoronis</i>. The genera differ in features noted in the couplet below. <i>Sclerolepis</i>, of the southeastern United States, apparently also is closely related, and its recognition as separate reinforces recognition of <i>Shinnersia</i>.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Heads borne singly, from axils of primary leaves; involucres 5–6 mm; corollas infundibular, tubes relatively long; cypselae sparsely gland-dotted and with forked hairs; carpopodia oblique; pappi 0.
|[[Shinnersia|Shinnersia]]
|-id=key-0-1
|1
|Heads usually in loose or open, corymbiform, bracteate arrays; involucres 2–3 mm; corollas tubular-funnelform, tubes relatively short; cypselae eglandular, scabrellous on angles, without forked hairs; carpopodia at right angles; pappi persistent, of 2–6 setiform scales.
|[[Trichocoronis|Trichocoronis]]
|}
</div></div><!--

-->{{#Taxon:
name=Shinnersia rivularis
|authority=(A. Gray) R. M. King & H. Robinson
|rank=species
|parent rank=genus
|synonyms=
|basionyms=Trichocoronis rivularis
|family=Asteraceae
|phenology=Flowering (Dec–)Mar–May(–Aug).
|habitat=Water along streams, in slow-moving water (to 1 m deep) arising from calcareous outcrops
|elevation=50–3000 m
|distribution=Tex.;Mexico (Coahuila;Nuevo León).
|reference=None
|publication title=Phytologia
|publication year=1970
|special status=Illustrated
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V21_1231.xml
|tribe=Asteraceae tribe Eupatorieae
|genus=Shinnersia
|species=Shinnersia rivularis
}}<!--

-->[[Category:Treatment]][[Category:Shinnersia]]