View source for Helminthotheca

{{Treatment/ID
|accepted_name=Helminthotheca
|accepted_authority=Zinn
|publications={{Treatment/Publication
|title=Cat. Pl. Hort. Gott.,
|place=430. 1757
|year=1757
}}
|common_names=Oxtongue
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Cichorieae;Helminthotheca
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Cichorieae]]</div><div class="higher-taxon"><small>genus</small>[[Helminthotheca]]</div></div>
|etymology=Greek helminthos, worm, and Latin theca, case or container; allusion unclear, perhaps to shapes of cypselae
|volume=Volume 19
|mention_page=page 216
|treatment_page=page 300
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals </b>or biennials, 10–100+ cm; taprooted. <b>Stems</b> usually 1, erect, branched distally or throughout, hirsute to hispid or setose (hair tips 2–4-hooked). <b>Leaves</b> basal and cauline; basal ± petiolate, distal sessile; blades elliptic, lanceolate, oblanceolate, oblong, or ovate, margins usually dentate to pinnately lobed (faces hirsute to hispid, hair tips 2–4-hooked). <b>Heads</b> borne singly or in loose, corymbiform arrays. <b>Peduncles</b> (terminal and axillary) not inflated distally, seldom bracteate. <b>Calyculi</b> of (3–)5, cordate or ovate to lance-ovate, foliaceous bracts. <b>Involucres</b> ovoid to urceolate, 9–12+ mm diam. (larger in fruit). <b>Phyllaries</b> (5–)8–13+ in 1 series, lance-linear to linear, subequal, margins little, if at all, scarious, apices acuminate. <b>Receptacles</b> flat, pitted, glabrous, epaleate. <b>Florets</b> 30–60+; corollas yellow (often reddish abaxially). <b>Cypselae</b> (dimorphic): outer whitish, bodies gibbous, ribs 5–10, beaks about equaling bodies, fragile, faces hirtellous to pilosulous adaxially; inner reddish brown, bodies ± compressed-ellipsoid to fusiform, beaks about equaling or longer than bodies, fragile, faces transversely rugulose to muricate, otherwise glabrous; pappi persistent, of 10–15+, whitish, subequal, barbellate or plumose, subulate to setiform (basally connate) scales in 1–2 series. <b>x</b> = 5.</span><!--

-->{{Treatment/Body
|distribution=Europe;widely introduced.
|discussion=<p>Species 4 (1 in the flora).</p>
|tables=
|references={{Treatment/Reference
|id=lack1975a
|text=Lack, H. W. 1975. A note on Helminthotheca Zinn (Compositae). Taxon 24: 111–112.
}}
}}<!--

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-->{{#Taxon:
name=Helminthotheca
|author=John L. Strother
|authority=Zinn
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Asteraceae
|illustrator=Barbara Alongi
|distribution=Europe;widely introduced.
|introduced=true
|reference=lack1975a
|publication title=Cat. Pl. Hort. Gott.,
|publication year=1757
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V19_438.xml
|tribe=Asteraceae tribe Cichorieae
|genus=Helminthotheca
}}<!--

-->[[Category:Treatment]][[Category:Asteraceae tribe Cichorieae]]