Calycoseris sp.
Tack-stem, Tack-Stem
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Family: Asteraceae · Type: Annual · Native
Calycoseris sp. (Tack-stem) is a native California annual in the Asteraceae family.
How to tell it apart
vs Rafinesquia: Rafinesquia pappus stays attached; Calycoseris pappus mostly falls away when mature.; vs Malacothrix: Malacothrix seeds lack beaks; Calycoseris seeds taper into short beaks.; vs Anisocoma: Anisocoma has scale-like pappus; Calycoseris has bristly pappus that mostly falls off.; vs Munzothamnus: Munzothamnus is a woody shrub; Calycoseris is a desert annual herb.; vs Hieracium: Hieracium is densely long-hairy; Calycoseris has glandular-sticky stems without long hairs.
Frequently asked questions
Is Calycoseris sp. native to California?
Yes. Calycoseris sp. is native to California (recorded as native).
What plant family does Calycoseris sp. belong to?
Calycoseris sp. is in the Asteraceae family, genus Calycoseris.
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.