Cuscuta gronoviiWilld.

Scaldweed

WFO wfo-0001297218 Accepted WFO 2026-06 7 photographs CC0 / CC BY

Plate 1 figs. a–g

Cuscuta gronovii, photographed by Étienne Lacroix-Carignan
fig. a Étienne Lacroix-Carignan, CC0 1.0 / 2021-09-24 / obs. 159464893
Cuscuta gronovii, photographed by Henry "Nick" Robertson
fig. b Henry "Nick" Robertson, CC BY-SA 4.0 / obs. 155752944
Cuscuta gronovii, photographed by Henry "Nick" Robertson
fig. c Henry "Nick" Robertson, CC BY-SA 4.0 / obs. 155753314
Cuscuta gronovii, photographed by Elias
fig. d Elias, CC BY 4.0 / obs. 156574488
Cuscuta gronovii, photographed by Brittany
fig. e Brittany, CC0 1.0 / obs. 154192862
Cuscuta gronovii, photographed by Henry "Nick" Robertson
fig. f Henry "Nick" Robertson, CC BY-SA 4.0 / obs. 148127330
Cuscuta gronovii, photographed by Mark Richman
fig. g Mark Richman, CC BY 4.0 / obs. 151126895

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.

Flowering n = 369 observations

Peak flowering in Aug, from 369 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 13 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.

  • Cuscuta bonariensis hort. ex Engelm.
  • Cuscuta calyptrata (Engelm.) Small
  • Cuscuta domingensis Urb.
  • Cuscuta gronovii var. saururi (Engelm.) MacMill.
  • Cuscuta gronovii var. vulgivaga Engelm.
  • Cuscuta polyantha Shuttlew. ex Engelm.
  • Cuscuta saururi Engelm.
  • Cuscuta vulgivaga Engelm.
  • Cuscuta vulgivaga var. glomerata Engelm.
  • Cuscuta vulgivaga var. laxiflora Engelm.
  • Cuscuta vulgivaga var. tetramera Engelm.
  • Epithymum gronovii (Willd. ex Schult.) Nieuwl. & Lunell
  • Grammica gronovii (Roem. & Schult.) Hadač & Chrtek

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.