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Humulus japonicus &. Z. Siebold, ucc.
JAPANESE HOP
Humulus scandens

Life   Plantae   Dicotyledoneae   Cannabaceae   Humulus

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Humulus japonicus
© Les Mehrhoff, 2008-2010 · 3
Humulus japonicus
Humulus japonicus
© Les Mehrhoff, 2008-2010 · 2
Humulus japonicus

Humulus japonicus, leaf and flower
© George Yatskievych, 2003 · 1
Humulus japonicus, leaf and flower
Humulus japonicus
© Les Mehrhoff, 2008-2010 · 1
Humulus japonicus

Associates · map
FamilyScientific name @ source (records)
Erysiphaceae  Sphaerotheca humuli @ BPI (2)
Mycosphaerellaceae  Cercospora humuli @ BPI (2)

Pseudocercospora cantuariensis @ BPI (1)

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Following modified from Delaware Wildflowers
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Delaware Wildflowers  •  Scientific names

Humulus japonicus Sieb. & Zucc. ( Humulus scandens ) Japanese Hops
Cannabaceae — Indian Hemp family
Invasive non-native
Humulus japonicus
Pistillate (female) flower cluster with fruit
Humulus japonicus
Staminate (male) flowers
Humulus japonicus
White Clay Creek State Park -- Creek Road
September 2010

Guide to Humulus of Delaware

Search Google Delaware USDA

Copyright David G. Smith

Delaware Wildflowers main page

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http://plants.usda.gov/java/profile?symbol=HUJA ---> https://plants.usda.gov/java/profile?symbol=HUJA
https://plants.usda.gov/java/profile?symbol=HUJA ---> http://plants.usda.gov/core/profile?symbol=HUJA
http://plants.usda.gov/core/profile?symbol=HUJA ---> https://plants.usda.gov/core/profile?symbol=HUJA
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Humulus japonicus Siebold & Zucc.
Japanese hop

Image of Humulus japonicus

General Information
Symbol: HUJA
Group: Dicot
Family: Cannabaceae
Duration: Annual
Perennial
Growth Habit : Forb/herb
Vine
Native Status : CAN   I
L48   I
Data Source and Documentation
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Plants-NRCS Logos
green round image for nativity Native blue round image for introduced Introduced ocre round image for introduced and nativity Both white round image for no status Absent/Unreported
image for native, but no county data Native, No County Data image for introduced, but no county data Introduced, No County Data both introduced and native, but no county data Both, No County Data
Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   

Images

click on a thumbnail to view an image, or see all the Humulus thumbnails at the Plants Gallery

Carole Ritchie. Provided by ARS Systematic Botany and Mycology Laboratory . China, Manchuria. Usage Requirements .

Mark A. Garland. USA, NC, Guilford Co., Greensboro, Barber Park. August 28, 2012. Usage Requirements .

Mark A. Garland. USA, NC, Guilford Co., Greensboro, Barber Park. August 28, 2012. Usage Requirements .

Mark A. Garland. USA, NC, Guilford Co., Greensboro, Barber Park. August 28, 2012. Usage Requirements .

Mark A. Garland. USA, NC, Guilford Co., Greensboro, Barber Park. August 28, 2012. Usage Requirements .

Mark A. Garland. USA, NC, Guilford Co., Greensboro, Barber Park. August 28, 2012. Usage Requirements .

Mark A. Garland. USA, NC, Guilford Co., Greensboro, Barber Park. September 10, 2012. Usage Requirements .

Mark A. Garland. USA, NC, Guilford Co., Greensboro, Barber Park. September 10, 2012. Usage Requirements .

Mark A. Garland. USA, NC, Guilford Co., Greensboro, Barber Park. September 10, 2012. Usage Requirements .

slideshow

Synonyms

Symbol Scientific Name
HUSC Humulus scandens auct. non (Lour.) Merr.

Classification

Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Magnoliopsida – Dicotyledons
Subclass Hamamelididae
Order Urticales
Family Cannabaceae – Hemp family
Genus Humulus L. – hop
Species Humulus japonicus Siebold & Zucc. – Japanese hop

Subordinate Taxa

This plant has no children

Legal Status

Noxious Weed Information
This plant is listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete noxious weed list for that location, or click here for a composite list of all Federal and State Noxious Weeds .
Connecticut Japanese hops Potentially invasive, banned
Massachusetts Japanese hops Prohibited
U.S. Weed Information
Humulus japonicus Japanese hops This plant can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. Click on an acronym to view each weed list, or click here for a composite list of Weeds of the U.S.
STATE Assorted authors. State noxious weed lists for 46 states . State agriculture or natural resource departments.

Wetland Status

Interpreting Wetland Status

North America
Atlantic and Gulf Coastal Plain FAC
Eastern Mountains and Piedmont FACU
Great Plains FACU
Midwest FACU
Northcentral & Northeast FACU

Related Links

More Accounts and Images
ARS Germplasm Resources Information Network (HUJA)
Flora of North America (HUJA)
Integrated Taxonomic Information System (HUJA)
Integrated Taxonomic Information System (HUSC)
University of Tennessee Herbarium (Distribution) (HUJA)
University of Wisconsin - Stevens Point Freckmann Herbarium (HUJA)

Wildlife

Food

Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Cover

Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover


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Following modified from Flora of North America
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FNA | Family List | FNA Vol. 3 | Cannabaceae | Humulus

1. Humulus japonicus Siebold & Zuccarini, Abh. Math.-Phys. Cl. Konigl. Bayer. Akad. Wiss. 4(3): 213. 1846.

Japanese hop(s), houblon japonais

Herbs , annual, vining, 0.5-2.5 m. Stems usually branched. Leaves: petioles usually longer than blades. Leaf 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. Inflorescences: 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. Infructescences pendulous, green, conelike, ovoid to oblong, (1-)1.5-3(-4) cm; bracteoles without yellow glands. Achenes yellow-brown, ovoid-orbicular, inflated to lenticular, 4-5 mm, glandless. 2 n = 20, including 6 chromosomes concerned with sex determination.

Flowering early-mid summer. Roadsides, fencerows, waste places, riverbanks; 0-1000 m; introduced; 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.

Although I have no records from New Hampshire, the state is within the geographic range of Humulus japonicus .

Variegated forms of Humulus japonicus , cultivated as ornamentals, are sometimes spontaneous. The vernacular name Japanese hop(s) is occasionally misapplied to H . lupulus var. cordifolius (Miquel) Maximowicz, a variety not found in North America.

The disposition of the name Humulus 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 Humulus japonicus . If Merrill was correct, then the combination Humulus scandens would have priority. The material described by Loureiro, however, was not preserved, and his description does not coincide with that of H . japonicus . Humulus scandens is not included in synonymy in this treatment.

I. A. Grudzinskaya (1988) segregated Humulus japonicus as a new monotypic genus, Humulopsis , with the single species Humulopsis scandens (Loureiro) Grudzinskaya.

Updated: 2018-11-20 17:55:11 gmt
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