APC: Australian Plant Census
Currently accepted names of the Australian vascular flora

ARS-GRIN: United States Department of Agriculture, Agricultural Research Service, Germplasm Resources Information Network
General information of germplasm collections

AusGrass2: AusGrass updated
Dichotomous keys for and general information of grasses found in Australia

AVH: Australia's Virtual Herbarium
Dynamic access to the wealth of plant specimen data held by Australian herbaria

eFloras
General information on flora found in selected countries

FloraBase: Department of Environment and Conservation, Western Australia
General information on flora found in WA

GBIF: Global Biodiversity Information Facility
Free and open access to biodiversity data

GrassBase: Kew Royal Botanic Gardens
Detailed morphological descriptions of grass species

Kew Royal Botanic Gardens (plants & fungi)
Descriptions of the world's plant and fungal diversity

PlantNet: New South Wales flora online
Dichotomous keys for and general information on flora found in NSW

USDA: United States Department of Agriculture
General information about the vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories