Sidotheca

{{Short description|Genus of flowering plants}}

{{Automatic taxobox

| image = Sidotheca emarginata.jpg

| image_caption = Sidotheca emarginata

| taxon = Sidotheca

| authority = Reveal

}}

Sidotheca is a genus of flowering plants belonging to the family Polygonaceae.{{cite web |title=Sidotheca Reveal {{!}} Plants of the World Online {{!}} Kew Science |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:60436679-2 |website=Plants of the World Online |access-date=16 March 2021 |language=en}}

Its native range is California and Northwestern Mexico.

Species:

• Sidotheca caryophylloides {{small|(Parry) Reveal}}
• Sidotheca emarginata {{small|(H.M.Hall) Reveal}}
• Sidotheca trilobata {{small|(A.Gray) Reveal}}