Council of Heads of Australasian Herbaria (CHAH) is an association of the leaders of herbaria in Australia and New Zealand.^[1][2] It is governed by a constitution.^[2][3] It endorses the taxonomy and nomenclature of the Australian Plant Census,^[4] which is the source for accepted names of species and, in particular, for accepted names of Australasian species. It supports the Australian Plant Name Index.^[5] CHAH is incorporated in the A.C.T. and is an Australian registered business with ABN 31 496 409 479.^[1]

Membership of CHAH consists of the heads of the following herbaria:

• State Herbarium of South Australia, Adelaide
• Queensland Herbarium, Brisbane
• Australian National Herbarium, Canberra
• Australian Tropical Herbarium, Cairns
• Tasmanian Herbarium, Hobart
• National Herbarium of Victoria, Melbourne
• National Herbarium of New South Wales, Sydney
• Northern Territory Herbarium, Darwin
• Western Australian Herbarium, Perth
• Allan Herbarium, Christchurch, NZ
• Te Papa Herbaria, Wellington, NZ
• Auckland Museum Herbarium^[2]

There are a further two council members: one to represent the constituent collections of the National Collection of Fungi;
and another to represent Australian university herbaria.^[2]

The council also invites observers to participate. As of 14 September 2018^[update] there are observers from:^[1]

• Papua New Guinea National Herbarium (LAE)
• Council of Heads of Australian Fauna Collections (CHAFC)
• Council of Australian Museum Directors (CAMD)
• Australian Biological Resources Study (ABRS)
• Council of Heads of Australian Botanic Gardens (CHABG)