View source for Humulus japonicus

{{Treatment/ID
|accepted_name=Humulus japonicus
|accepted_authority=Siebold & Zuccarini
|publications={{Treatment/Publication
|title=Abh. Math.-Phys. Cl. Königl. Bayer. Akad. Wiss
|place=4(3): 213. 1846
|year=1846
}}
|common_names=Japanese hop(s);houblon japonais
|special_status={{Treatment/ID/Special_status
|code=W
|label=Weedy
}}{{Treatment/ID/Special_status
|code=I
|label=Introduced
}}
|basionyms=
|synonyms=
|hierarchy=Cannabaceae;Humulus;Humulus japonicus
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Cannabaceae]]</div><div class="higher-taxon"><small>genus</small>[[Humulus]]</div><div class="higher-taxon"><small>species</small>[[Humulus japonicus]]</div></div>
|volume=Volume 3
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> annual, vining, 0.5-2.5 m. <b>Stems</b> usually branched. <b>Leaves</b>: petioles usually longer than blades. <b>Leaf</b> blade cordate, palmately 5-9-lobed, 5-12 cm, margins of lobes serrulate, apex acuminate; surfaces abaxially with veins pubescent, with stiff hairs, glands yellow, sessile, discoid, adaxially margins of younger leaf blades with stiff cystolithic hairs. <b>Inflorescences</b>: staminate inflorescences erect, 15-25 cm, flower anthers without glands; pistillate inflorescences spikes, conelike, ovoid; bracteole ovate-orbiculate, 7-10 mm, pilose, margins densely ciliate-hairy. <b>Infructescences</b> pendulous, green, conelike, ovoid to oblong, (1-)1.5-3(-4) cm; bracteoles without yellow glands. <b>Achenes</b> yellow-brown, ovoid-orbicular, inflated to lenticular, 4-5 mm, glandless. <b>2n</b> = 20, including 6 chromosomes concerned with sex determination.</span><!--

-->{{Treatment/Body
|phenology=Flowering early-mid summer.
|habitat=Roadsides, fencerows, waste places, riverbanks
|elevation=0-1000 m
|distribution=Ont.;Que.;Ala.;Ark.;Conn.;Del.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;Maine;Md.;Mass.;Mich.;Minn.;Mo.;Nebr.;N.J.;N.Y.;N.C.;N.Dak.;Ohio;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Vt.;Va.;W.Va.;Wis.;Asia.
|discussion=<p>Although I have no records from New Hampshire, the state is within the geographic range of <i>Humulus japonicus</i>.</p><!--
--><p>Variegated forms of <i>Humulus japonicus</i>, cultivated as ornamentals, are sometimes spontaneous. The vernacular name Japanese hop(s) is occasionally misapplied to <i>H. lupulus</i> var. cordifolius (Miquel) Maximowicz, a variety not found in North America.</p><!--
--><p>The disposition of the name <i>Humulus</i> scandens (Loureiro) Merrill, based on Antidesma scandens Loureiro, is problematic. E. D. Merrill (1935) was convinced that the name A. scandens applied to the species <i>Humulus japonicus</i>. If Merrill was correct, then the combination <i>Humulus</i> scandens would have priority. The material described by Loureiro, however, was not preserved, and his description does not coincide with that of <i>H. japonicus</i>. <i>Humulus</i> scandens is not included in synonymy in this treatment.</p><!--
--><p>I. A. Grudzinskaya (1988) segregated <i>Humulus japonicus</i> as a new monotypic genus, Humulopsis, with the single species Humulopsis scandens (Loureiro) Grudzinskaya.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Humulus japonicus
|author=
|authority=Siebold & Zuccarini
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Cannabaceae
|phenology=Flowering early-mid summer.
|habitat=Roadsides, fencerows, waste places, riverbanks
|elevation=0-1000 m
|distribution=Ont.;Que.;Ala.;Ark.;Conn.;Del.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;Maine;Md.;Mass.;Mich.;Minn.;Mo.;Nebr.;N.J.;N.Y.;N.C.;N.Dak.;Ohio;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Vt.;Va.;W.Va.;Wis.;Asia.
|introduced=true
|reference=None
|publication title=Abh. Math.-Phys. Cl. Königl. Bayer. Akad. Wiss
|publication year=1846
|special status=Weedy;Introduced
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V3/V3_760.xml
|genus=Humulus
|species=Humulus japonicus
}}<!--

-->[[Category:Treatment]][[Category:Humulus]]