Odontostephana obliqua(Jacq.) Alexander

climbing milkvine

WFO wfo-0000384607 Accepted WFO 2026-06 8 photographs CC0 / CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Odontostephana obliqua, photographed by Clay Gibbons
fig. a Clay Gibbons, CC BY 4.0 / 2022-06-04 / obs. 203319124
Odontostephana obliqua, photographed by Christopher Zacharias
fig. b Christopher Zacharias, CC BY 4.0 / obs. 134474983
Odontostephana obliqua, photographed by Elias
fig. c Elias, CC BY 4.0 / obs. 134190525
Odontostephana obliqua, photographed by Bonnie Isaac
fig. d Bonnie Isaac, CC0 1.0 / obs. 49792722
Odontostephana obliqua, photographed by Christopher Zacharias
fig. e Christopher Zacharias, CC BY 4.0 / obs. 20815340
Odontostephana obliqua, photographed by Judy Gallagher
fig. f Judy Gallagher, CC BY-SA 4.0 / obs. 8626272
Odontostephana obliqua, photographed by Amy
fig. g Amy, CC BY-SA 4.0 / obs. 8225950
Odontostephana obliqua, photographed by Brian Finzel
fig. h Brian Finzel, CC BY-SA 4.0 / obs. 181022183

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 14 botanical countries

Regions where Odontostephana obliqua is native: Alabama, District of Columbia, Georgia, Illinois, Indiana, Kentucky, Maryland, Mississippi, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia AlabamaGeorgiaIllinoisIndianaKentuckyMarylandMississippiNorth CarolinaOhioPennsylvaniaTennesseeVirginiaWest Virginia District of Columbia
Native distribution of Odontostephana obliqua, 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
District of Columbia WDC
Georgia GEO
Illinois ILL
Indiana INI
Kentucky KTY
Maryland MRY
Mississippi MSI
North Carolina NCA
Ohio OHI
Pennsylvania PEN
Tennessee TEN
Virginia VRG
West Virginia WVA

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 58 in flower of 65 examined

Peak flowering in May. Each bar is the share of Odontostephana obliqua 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. 58 of 65 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 9 months have fewer than 5 examined observations, so no proportion is drawn for them. 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 15 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.

  • Cynanchum discolor Sims
  • Cynanchum obliquum Jacq.
  • Cynanchum virginicum Banks ex Schult.
  • Gonolobus discolor (Sims) Schult.
  • Gonolobus hirsutus Pursh
  • Gonolobus macrophyllus Elliott
  • Gonolobus macrophyllus Decne.
  • Gonolobus obliquus (Jacq.) Schult.
  • Gonolobus obliquus var. shortii A.Gray
  • Gonolobus shortii (A.Gray) A.Gray
  • Matelea obliqua (Jacq.) Woodson
  • Matelea shortii (A.Gray) Woodson
  • Odontostephana shortii (A.Gray) Alexander
  • Vincetoxicum obliquum (Jacq.) Britton
  • Vincetoxicum shortii (A.Gray) Britton

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 MAOB2. 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.