Characters: Colonies have a wide range of forms from compact bushes to tables. They seldom exceed 0.5 metres across. Axial corallites are small. Radial corallites are usually a mixture of sizes and are strongly appressed and swollen, with small openings.
Colour: Cream, brown or yellow, sometimes brown with purple branch tips and cream radial corallites, a colour commonly shared by A. secale and A. nana.
Habitat: A wide range of reef environments and rocky foreshores.
Abundance: Sometimes common.
Taxonomic Note: A species complex.