Ampelopsis glandulosa(Wall.) Momiy.

Amur peppervine

WFO wfo-0000531668 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Ampelopsis glandulosa, photographed by Dilrukshan Priyantha Wijesinghe
fig. a Dilrukshan Priyantha Wijesinghe, CC BY 4.0 / 2022-06-06 / obs. 204152764

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Native range 20 botanical countries

Regions where Ampelopsis glandulosa is native: China North-Central, China South-Central, China Southeast, Japan, Khabarovsk, Korea, Kuril Is., Manchuria, Nansei-shoto, Primorye, Sakhalin, Taiwan, Assam, Bangladesh, East Himalaya, Laos, Myanmar, Nepal, Philippines, Vietnam China North-CentralChina South-CentralChina SoutheastJapanKhabarovskManchuriaPrimoryeSakhalinTaiwanAssamBangladeshEast HimalayaLaosMyanmarNepalPhilippinesVietnam KoreaNansei-shoto
Native distribution of Ampelopsis glandulosa, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows. Regions too small to draw at this scale are marked with a dot.
RegionTDWG codeContinent
China North-Central CHN ASIA-TEMPERATE
China South-Central CHC
China Southeast CHS
Japan JAP
Khabarovsk KHA
Korea KOR
Kuril Is. KUR
Manchuria CHM
Nansei-shoto NNS
Primorye PRM
Sakhalin SAK
Taiwan TAI
Assam ASS ASIA-TROPICAL
Bangladesh BAN
East Himalaya EHM
Laos LAO
Myanmar MYA
Nepal NEP
Philippines PHI
Vietnam VIE

Not drawn on the map: Kuril Is.. We hold no public-domain boundary for this region, so it is listed rather than guessed at.

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Flowering 979 in flower of 5,941 examined

Proportion of examined Ampelopsis glandulosa in flower, by month
Month In flower Examined Share 95% interval
Jan 3 19 16% 6% to 38%
Feb 1 9 11% 2% to 44%
Mar 1 8 13% 2% to 47%
Apr 9 229 4% 2% to 7%
May 14 289 5% 3% to 8%
Jun 155 480 32% 28% to 37%
Jul 286 618 46% 42% to 50%
Aug 336 990 34% 31% to 37%
Sep 133 1520 9% 7% to 10%
Oct 33 1364 2% 2% to 3%
Nov 8 391 2% 1% to 4%
Dec 0 24 0% 0% to 14%

Peak flowering in Jul. Each bar is the share of Ampelopsis glandulosa observations in which someone actually recorded the reproductive state and found the plant in flower, not the raw number of flowering records. That distinction matters: people observe plants far more in spring than in winter, so a bare count of flowering records partly measures when people go outside. Dividing by the number examined removes that. 979 of 5,941 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. This is still a global aggregate and not a forecast for your garden: the same species flowers on different dates in different hemispheres. Where a species has fewer than 30 flowering records we do not draw this chart at all. Computed from 10.15468/dl.cgje2x.

Also published as 59 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Allosampela heterophylla (Thunb.) Raf.
  • Ampelopsis brevipedunculata (Maxim.) Trautv.
  • Ampelopsis brevipedunculata f. ciliata (Nakai) T.B.Lee
  • Ampelopsis brevipedunculata f. citrulloides (Lebas) Rehder
  • Ampelopsis brevipedunculata f. elegans (K.Koch) Rehder
  • Ampelopsis brevipedunculata f. puberula W.T.Wang
  • Ampelopsis brevipedunculata var. ciliata (Nakai) F.Y.Lu
  • Ampelopsis brevipedunculata var. citrulloides (Lebas) L.H.Bailey
  • Ampelopsis brevipedunculata var. elegans (K.Koch) L.H.Bailey
  • Ampelopsis brevipedunculata var. glabrifolia Honda
  • Ampelopsis brevipedunculata var. hancei (Planch.) Rehder
  • Ampelopsis brevipedunculata var. heterophylla (Thunb.) H.Hara
  • Ampelopsis brevipedunculata var. kulingensis Rehder
  • Ampelopsis brevipedunculata var. maximowiczii (Regel) Rehder
  • Ampelopsis brevipedunculata var. vestita (Rehder) Rehder
  • Ampelopsis citrullifolia Dippel
  • Ampelopsis citrulloides Lebas
  • Ampelopsis citrulloides hort. ex Dippel
  • Ampelopsis glandulosa f. citrulloides (Lebas) Momiy.
  • Ampelopsis glandulosa f. elegans (K.Koch) Momiy.
  • Ampelopsis glandulosa var. ciliata (Nakai) Momiy.
  • Ampelopsis glandulosa var. glabrifolia (Honda) Momiy.
  • Ampelopsis glandulosa var. vestita (Rehder) Momiy.
  • Ampelopsis heterophylla (Thunb.) Siebold & Zucc.

and 35 more.

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. USDA PLANTS Database. common name, checklist symbol AMBR7. public domain. Retrieved 2026-07-13.
  4. Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.