Physocarpus intermedius(Rydb.) C.K.Schneid.

WFO wfo-0001013811 Accepted WFO 2026-06 8 photographs CC BY

Plate 1 figs. a–h · 8 separate observations

Physocarpus intermedius, photographed by Thomas Koffel
fig. a Thomas Koffel, CC BY 4.0 / 2021-05-24 / obs. 131633146
Physocarpus intermedius, photographed by Thomas Koffel
fig. b Thomas Koffel, CC BY 4.0 / obs. 131639298
Physocarpus intermedius, photographed by aarongunnar
fig. c aarongunnar, CC BY 4.0 / obs. 19270864
Physocarpus intermedius, photographed by Rose Zappa
fig. d Rose Zappa, CC BY 4.0 / obs. 5336898
Physocarpus intermedius, photographed by aarongunnar
fig. e aarongunnar, CC BY 4.0 / obs. 24409063
Physocarpus intermedius, photographed by Brandon Corder
fig. f Brandon Corder, CC BY 4.0 / obs. 157748601
Physocarpus intermedius, photographed by Rose Zappa
fig. g Rose Zappa, CC BY 4.0 / obs. 78212945
Physocarpus intermedius, photographed by Nathan Aaron
fig. h Nathan Aaron, CC BY 4.0 / obs. 61297453

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 22 botanical countries

Regions where Physocarpus intermedius is native: Arkansas, Colorado, Illinois, Indiana, Iowa, Kansas, Maryland, Mexico Northeast, Mexico Northwest, Michigan, Minnesota, Mississippi, Missouri, Nebraska, New York, North Dakota, Ohio, Oklahoma, Ontario, South Dakota, Tennessee, Wisconsin ArkansasColoradoIllinoisIndianaIowaKansasMarylandMexico NortheastMexico NorthwestMichiganMinnesotaMississippiMissouriNebraskaNew YorkNorth DakotaOhioOklahomaOntarioSouth DakotaTennesseeWisconsin
Native distribution of Physocarpus intermedius, 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.
RegionTDWG codeContinent
Arkansas ARK NORTHERN AMERICA
Colorado COL
Illinois ILL
Indiana INI
Iowa IOW
Kansas KAN
Maryland MRY
Mexico Northeast MXE
Mexico Northwest MXN
Michigan MIC
Minnesota MIN
Mississippi MSI
Missouri MSO
Nebraska NEB
New York NWY
North Dakota NDA
Ohio OHI
Oklahoma OKL
Ontario ONT
South Dakota SDA
Tennessee TEN
Wisconsin WIS

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.

Also published as 7 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.

  • Neillia intermedia (Rydb.) Bean
  • Opulaster intermedius Rydb.
  • Opulaster opulifolius var. intermedius (Rydb.) Farw.
  • Opulaster ramaleyi A.Nelson
  • Physocarpus intermedius f. parvifolius Rehder
  • Physocarpus missouriensis Daniels
  • Physocarpus opulifolius var. intermedius (Rydb.) B.L.Rob.

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. 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.