Ambrosia salsola(Torr. & A.Gray) Strother & B.G.Baldwin

Cheesebush

WFO wfo-0000033506 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Ambrosia salsola, photographed by Wendy St. John
fig. a Wendy St. John, CC BY-SA 4.0 / 2022-05-14 / obs. 198964740
Ambrosia salsola, photographed by Tim Messick
fig. b Tim Messick, CC BY 4.0 / obs. 202488891
Ambrosia salsola, photographed by Steve Matson
fig. c Steve Matson, CC BY 4.0 / obs. 199540588
Ambrosia salsola, photographed by Bobby McCabe
fig. d Bobby McCabe, CC BY 4.0 / obs. 193385445
Ambrosia salsola, photographed by Tim Messick
fig. e Tim Messick, CC BY 4.0 / obs. 191453244
Ambrosia salsola, photographed by Kimball Garrett
fig. f Kimball Garrett, CC0 1.0 / obs. 192325103
Ambrosia salsola, photographed by paulexcoff
fig. g paulexcoff, CC BY-SA 4.0 / obs. 189691427
Ambrosia salsola, photographed by paulexcoff
fig. h paulexcoff, CC BY-SA 4.0 / obs. 189368115

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 = 1,593 observations

Peak flowering in Mar, from 1,593 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 6 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.

  • Ambrosia salsola var. salsola
  • Hymenoclea fasciculata A.Nelson
  • Hymenoclea fasciculata var. fasciculata
  • Hymenoclea pentalepis Rydb.
  • Hymenoclea salsola Torr. & A.Gray
  • Hymenoclea salsola var. pentalepis (Rydb.) L.D.Benson

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.