English: The main trunk (diameter 1cm approx.) of a young specimen of Archidasyphyllum diacanthoides, the Tayu tree of Southern Chile and Argentina, the bark of which is a celebrated remedy for blunt trauma in the folk medicine of the Mapuche-Huilliche people of Futahuillimapu (= the Los Lagos region of Chile ). With its dense evergreen crown, this unusual member of the daisy family is also used as a street tree in urban areas of Argentina.

A young ( 5 years approx ), shrubby, cultivated plant, growing on the South-facing wall of a private garden in southern Scotland, where, on one occasion it survived unscathed a Winter temperature of at least minus 6 degrees Centigrade. Note young, light brown stem bark marked with a reticulate pattern in darker brown. Note also ( top right ) the brown, flower-like, empty, involucre of bracts of an infructescence borne cauliflorously ( i.e. directly from a main trunk ).

Until the release of its pappus-tufted fruits, the infructescences of this species strongly resemble those of the European wildflowers the knapweeds (also members of the daisy family Asteraceae).