Petasites Mill.

Greek petasos — broad-rimmed hat, an apparent allusion to the large leaves.

Perennial herbs, rhizomes present. Stems erect, scape-like. Leaves mostly basal, simple, margins entire to palmately lobed, developing after inflorescences, long-petiolate. Capitula radiate, diskiform or diskoid, of 2 types on different plants, few to many in terminal panicles or racemes, stalked. Involucral bracts in 1 or 2 rows, overlapping,more or less equal. Receptacle flat.outer florets sterile or female, ligulate, 2-lipped or tubular, variously coloured. Inner florets sterile or functionally male, tubular, variously coloured. Achenes obloid, glabrous. Pappus of many fine simple bristles. [Petasitis Mill.]

One species has become naturalised in Australia.

Large, round, long-petiolate leaves; 2 types of capitula present on different plants.

About 19 species from Europe, Asia and North America.

Source: Lawson, L.; Spencer, R. (2002). Dahlia. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 4. Flowering plants. Dicotyledons. Part 3. The identification of garden and cultivated plants. University of New South Wales Press.

Hero image
kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     Asteranae
order      Asterales
family       Asteraceae
Higher taxa
Subordinate taxa
species         Petasites fragrans (Vill.) C. Presl