TaiBIF | Search | All Living Things


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

Life   Plantae   Dicotyledoneae   Cannabaceae   Humulus

Links
80x5 - 240x3 - 240x4 - 320x1 - 320x2 - 320x3 - 640x1 - 640x2
Set display option above.
Click on images to enlarge.
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)

go to Discover Life's Facebook group

Following modified from Global Invasive Species Team, The Nature Conservancy
   Top | See original

&pull 20q v5.145 20180528: Error 403 Forbidden http://wiki.bugwood.org/Humulus_japonicus/

Following modified from Flora of Taiwan, National Taiwan University
   Top | See original

&pull 20q v5.145 20180528: Error 404 Not Found http://tai2.ntu.edu.tw/udth/bin/fot1.exe/browse?bid=2&page=188

Following modified from Delaware Wildflowers
   Top | See original

http://delawarewildflowers.org/plant.php?id=0999 ---> https://delawarewildflowers.org/plant.php?id=0999
&pull 20q v5.145 20180528: Error 500 Can't locate object method "new" via package "LWP::Protocol::https::Socket" https://delawarewildflowers.org/plant.php?id=0999

Following modified from Flora of North America
   Top | See original

Link to Flora of North America home
 
All Floras       Advanced Search
FNA Vol. 3 Login | eFloras Home | Help
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: 2021-09-26 04:50:01 gmt
TaiBIF | Search | All Living Things | Top
© Designed by The Polistes Corporation