Oxytheca sp.
(c) Matt Berger, some rights reserved (CC BY) · licence
Family: Polygonaceae · Type: Annual · Native
Oxytheca sp. is a native California annual in the Polygonaceae family.
How to tell it apart
vs Eriogonum: Oxytheca has cup-like involucres with 3-4 awns; Eriogonum has larger, awnless involucres.; vs Mucronea: Oxytheca has 3-4 awns per involucre; Mucronea has different involucre structure.; vs Claytonia: Oxytheca is in Polygonaceae with awned involucres; Claytonia is in Montiaceae with no involucres.; vs Sidotheca: Oxytheca has smooth-edged petals; Sidotheca has fringed or 3-lobed petals.; vs Acanthoscyphus: Oxytheca has 3-5 awns per involucre; Acanthoscyphus has 7-30+ awns creating bristly appearance.
Frequently asked questions
Is Oxytheca sp. native to California?
Yes. Oxytheca sp. is native to California (recorded as native).
What plant family does Oxytheca sp. belong to?
Oxytheca sp. is in the Polygonaceae family, genus Oxytheca.
Related species
Other California species in the same genus, family, or bioregion.
Sources: Jepson eFlora · CalPhotos
Last updated 2026-04-14
Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Cal-IPC, and more.