Plants of South Eastern New South Wales Flower heads and leaves. Australian Plant Image Index, photographer Murray Fagg, Black Mountain, Canberra, ACT Flowering plant. Photographer Don Wood, Bungonia State Conservation Area east of Goulburn. Seeding head. Photographer Valter Jacinto, Portugal Line drawings. a. leaf; flower head; seeding calyx. M Moir, National Herbarium of Victoria, © 2021 Royal Botanic Gardens Board Common name Hop clover Family Fabaceae Where found Woodland, grassy areas, disturbed sites, and gardens. Widespread. Notes Introduced annual herb to 0.5 m tall or prostrate. Calyx teeth spiny, and erect to spreading at the seeding stage. Stems sparsely hairy to almost hairless. Leaves alternating up the stems, compound, with 3 leaflets, each 0.8-1.6 cm long, 4-8 mm wide, virtually hairless, margins finely toothed, tips squared off or rounded with a small notch; stipules leafy and fused to the stalks for about half their length. Flower heads many-flowered, 8–15 mm long, 7–10 mm in diameter. Individual flowers 4–7 mm long, pea-shaped, with 5 petals, 2 joined together to form the keel, calyx white, corolla yellow, persistent, standard petal spoon-shaped, hooded. Flowers mainly Sep.–Jan. Varieties not recognised in NSW. PlantNET description (as Trifolium campestre): http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl? page=nswfl&lvl=sp&name=Trifolium~campestre (accessed 3 May 2021) Author: Betty Wood. This identification key and fact sheets are available as a free mobile application: Android edition iOS edition Creative Commons Attribution 3.0 Australia (CC BY).