Plant. Australian Plant Image Index, photo: Murray Fagg, NSW

Flower head and leaves. Australian Plant Image Index, photo: Murray Fagg, O'Connor, ACT.

Flower head. Australian Plant Image Index, photo: Murray Fagg, NSW

Back of flower head. Photo: Zoya Akulova, California, USA

Spent flower head. Photo: Zoya Akulova, California, USA

Common Name

Sunflower, Common Sunflower

Family

Asteraceae

Notes

Introduced annual or biennial forb 1-2m tall.  Leaves opposite near the base, alternating along the stem higher up, 3-20cm long or more, 10-120mm wide, flat, rough to rough hairy, margins smooth to toothed, with pointed tips.  Flower heads yellow, with brown to black centres, and many 'petals', borne singly or in small open groups at the end of the stems or singly at the bases of the upper leaves.

Description and photo in G.M. Cunningham, WE Mulham, PL Milthorpe and J H Leigh (1981 and later printings) Plants of Western New South Wales pages 679-680

PlantNET description:   http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Helianthus~annuus