The following links are for general information and research - some species or cultivars referred to may be unavailable in (or unsuitable for) Queensland
Australia
International
Note that some types of azalea grown in colder climates are unsuitable for subtropical Qld. There will be an attempt to concentrate on the more suitable evergreen types in the links below, but you still may find a variety discussed in international links.
Evergreen Azaleas University of California Center for Landscape and Urban Horticulture (PDF)
Azaleas Some background information about azaleas. Gardening Column, Virginia Cooperative Extension
Species, Groups, Cultivars
Encore Azalea (Includes some information on the origin of these cultivars) University of Arkansas
Azaleas (Encore azaleas) at the Green Beam website (USA)
Rhododendron x 'Fashion' Fashion Azaleas. Landscape Plant Fact Sheets, University of Florida USA (PDF)
Cultivation
Propagation
Possible misspellings: azalia, azaela, azalae, asalea, asaleas