Smilax rotundifoliaL.

roundleaf greenbrier

WFO wfo-0000741767 Accepted WFO 2026-06 7 photographs CC0 / CC BY

Plate 1 figs. a–g

Smilax rotundifolia, photographed by Jeff Clark
fig. a Jeff Clark, CC BY 4.0 / 2022-05-30 / obs. 201976685
Smilax rotundifolia, photographed by Joseph McPhail
fig. b Joseph McPhail, CC BY 4.0 / obs. 204270195
Smilax rotundifolia, photographed by Mark Apgar
fig. c Mark Apgar, CC BY 4.0 / obs. 201589990
Smilax rotundifolia, photographed by Bonnie Semmling
fig. d Bonnie Semmling, CC BY 4.0 / obs. 202341659
Smilax rotundifolia, photographed by jcollatz
fig. e jcollatz, CC0 1.0 / obs. 200833970
Smilax rotundifolia, photographed by Joseph Aubert
fig. f Joseph Aubert, CC BY 4.0 / obs. 201255788
Smilax rotundifolia, photographed by Harold Smith
fig. g Harold Smith, CC BY 4.0 / obs. 200577796

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.

Confused withby our own model

These are not lookalikes we guessed at. Each one is a species our identification model genuinely mistook for this plant, and how many times. The error rate is published.

Flowering n = 396 observations

Peak flowering in May, from 396 community-annotated observations worldwide. This is a global aggregate, not a forecast for your garden: the same species flowers on different dates in different hemispheres, and citizen-science records cluster near cities, at weekends, and in spring. Where a species has fewer than 30 annotated records we do not draw this chart at all.

Also published as 16 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.

  • Smilax caduca L.
  • Smilax ciliata Steud. ex A.DC.
  • Smilax deltifolia Raf.
  • Smilax deltifolia var. compressa Raf.
  • Smilax engelmanniana Kunth
  • Smilax platoplis Raf.
  • Smilax quadrangularis Muhl. ex Willd.
  • Smilax rotundifolia var. caduca (L.) Prov.
  • Smilax rotundifolia var. crenulata Small & A.Heller
  • Smilax rotundifolia var. engelmanniana (Kunth) A.DC.
  • Smilax rotundifolia var. missourensis A.DC.
  • Smilax rotundifolia var. parviflora A.DC.
  • Smilax rotundifolia var. quadrangularis (Muhl. ex Willd.) Alph.Wood
  • Smilax rotundifolia var. sprengelii (Kunth) A.DC.
  • Smilax sprengelii Kunth
  • Smilax tetragona M.Martens & Galeotti

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.

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