Calystegia silvaticaGriseb.

Large Bindweedshortstalk false bindweed

WFO wfo-0001297183 Accepted WFO 2026-06 8 photographs CC0 / CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Calystegia silvatica, photographed by Daniel Cahen
fig. a Daniel Cahen, CC BY 4.0 / 2022-06-12 / obs. 205523952
Calystegia silvatica, photographed by Daniel Cahen
fig. b Daniel Cahen, CC BY 4.0 / obs. 205536710
Calystegia silvatica, photographed by Dimitǎr Boevski
fig. c Dimitǎr Boevski, CC BY 4.0 / obs. 205614824
Calystegia silvatica, photographed by David Lazarus
fig. d David Lazarus, CC0 1.0 / obs. 204447401
Calystegia silvatica, photographed by Charles Stirton
fig. e Charles Stirton, CC BY-SA 4.0 / obs. 204074836
Calystegia silvatica, photographed by Derek Winterburn
fig. f Derek Winterburn, CC BY 4.0 / obs. 203242501
Calystegia silvatica, photographed by Andrew Skotnicki
fig. g Andrew Skotnicki, CC BY 4.0 / obs. 203774105
Calystegia silvatica, photographed by Юрий Данилевский (Yuriy Danilevsky)
fig. h Юрий Данилевский (Yuriy Danilevsky), CC BY 4.0 / obs. 203439391

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 58 botanical countries

Regions where Calystegia silvatica is native: Algeria, Egypt, Morocco, Tunisia, China South-Central, China Southeast, East Aegean Is., Iran, Lebanon-Syria, North Caucasus, Transcaucasus, Türkiye, Albania, Baleares, Bulgaria, Corse, France, Greece, Italy, Kriti, Krym, NW. Balkan Pen., Romania, Sardegna, Sicilia, South European Russia, Spain, Türkiye-in-Europe, Ukraine, Alabama, Arkansas, Connecticut, District of Columbia, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Maryland, Massachusetts, Mexico Northeast, Michigan, Missouri, Nebraska, New York, North Dakota, Ohio, Oklahoma, Pennsylvania, Saskatchewan, South Carolina, South Dakota, Tennessee, Texas, Vermont, Virginia, West Virginia AlgeriaEgyptMoroccoTunisiaChina South-CentralChina SoutheastEast Aegean Is.IranLebanon-SyriaNorth CaucasusTranscaucasusTürkiyeAlbaniaBulgariaCorseFranceGreeceItalyKritiKrymNW. Balkan Pen.RomaniaSiciliaSouth European RussiaSpainTürkiye-in-EuropeUkraineAlabamaArkansasConnecticutGeorgiaIllinoisIndianaIowaKansasKentuckyMarylandMassachusettsMexico NortheastMichiganMissouriNebraskaNew YorkNorth DakotaOhioOklahomaPennsylvaniaSaskatchewanSouth CarolinaSouth DakotaTennesseeTexasVermontVirginiaWest Virginia BalearesSardegnaDistrict of Columbia
Native distribution of Calystegia silvatica, 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
Alabama ALA NORTHERN AMERICA
Arkansas ARK
Connecticut CNT
District of Columbia WDC
Georgia GEO
Illinois ILL
Indiana INI
Iowa IOW
Kansas KAN
Kentucky KTY
Maryland MRY
Massachusetts MAS
Mexico Northeast MXE
Michigan MIC
Missouri MSO
Nebraska NEB
New York NWY
North Dakota NDA
Ohio OHI
Oklahoma OKL
Pennsylvania PEN
Saskatchewan SAS
South Carolina SCA
South Dakota SDA
Tennessee TEN
Texas TEX
Vermont VER
Virginia VRG
West Virginia WVA
Albania ALB EUROPE
Baleares BAL
Bulgaria BUL
Corse COR
France FRA
Greece GRC
Italy ITA
Kriti KRI
Krym KRY
NW. Balkan Pen. YUG
Romania ROM
Sardegna SAR
Sicilia SIC
South European Russia RUS
Spain SPA
Türkiye-in-Europe TUE
Ukraine UKR
China South-Central CHC ASIA-TEMPERATE
China Southeast CHS
East Aegean Is. EAI
Iran IRN
Lebanon-Syria LBS
North Caucasus NCS
Transcaucasus TCS
Türkiye TUR
Algeria ALG AFRICA
Egypt EGY
Morocco MOR
Tunisia TUN

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 1,287 in flower of 1,338 examined

Peak flowering in Dec. Each bar is the share of Calystegia silvatica 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. 1,287 of 1,338 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.

Where it actually grows measured, from 2,018 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -2.8 °C 2.0 °C 8.1 °C
Warmest month, mean daily high 17.4 °C 20.6 °C 28.2 °C
Annual rainfall 617 mm 905 mm 2,212 mm
Rainfall in the driest quarter 81 mm 166 mm 290 mm

It is found where winters bring light frost. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 2,018 research-grade observations of Calystegia silvatica that carry a coordinate, and this is the range those places actually span. The 5th and 95th percentiles are used rather than the minimum and maximum, because a single cultivated specimen in a heated conservatory should not widen a tropical plant's range to the Arctic.

This is not a hardiness zone. A USDA zone is the average annual extreme minimum temperature. The figure above is the mean daily minimum of the coldest month, which is a different quantity and is typically far warmer. Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one. Climate from CHELSA V2.1 (Karger et al. 2017); occurrences from 10.15468/dl.cgje2x.

Also published as 17 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.

  • Calystegia barbara Pomel
  • Calystegia fraterniflora (Mack. & Bush) Brummitt
  • Calystegia physoides Pomel
  • Calystegia sepium var. fraterniflora (Mack. & Bush) Shinners
  • Calystegia sepium var. hirsuta K.T.Fu
  • Calystegia sylvestris (Willd.) Roem. & Schult.
  • Convolvulus barbarus Pomel
  • Convolvulus fraterniflorus (Mack. & Bush) Mack. & Bush
  • Convolvulus inflatus Desf.
  • Convolvulus physoides Pomel
  • Convolvulus sepium var. fraterniflorus Mack. & Bush
  • Convolvulus silvaticus Kit.
  • Convolvulus sylvaticus Spreng.
  • Convolvulus sylvestris Waldst. & Kit.
  • Volvulus inflatus (Desf.) Druce
  • Volvulus silvaticus (Kit.) Kuntze
  • Volvulus sylvestris (Waldst. & Kit.) Degen

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. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. 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.