Flowers and leaves. Australian Plant Image Index, photo: Murray Fagg, Mt Ainslie, ACT

Flowers and leaves. Photo: Don Wood, Scotia Sanctuary, NSW

Plant. Photo: Don Wood, Scotia Sanctuary, NSW

Massed plants. Photo: Don Wood, Scotia Sanctuary, NSW

Common Name

Horehound; White Horehound

Family

Lamiaceae

Notes

Introduced shrub or perennial forb to 1m tall.  Leaves aromatic when crushed, opposite each other, 1-7cm long, 8-45mm wide, flat, hairy, toothed or irregularly lobed, with rounded tips.  Flowers white, 2-lipped, tubular, with five lobes, in dense whorls of more than 12 flowers at the bases of paired leaves.  Noxious weed Wentworth Shire.  Declared plant SA.  Noxious weed Vic.

Description and photo in GM Cunningham, WE Mulham, PL Milthorpe and J H Leigh (1981 and later printings) Plants of Western New South Wales page 573

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

Weeds of Australia Biosecurity Queensland Edition description:  http://keyserver.lucidcentral.org/weeds/data/03030800-0b07-490a-8d04-0605030c0f01/media/Html/Marrubium_vulgare.htm