1. ^Conservation status under the federal Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act) is based on the Species Profile and Threats (SPRAT) Database published by the Australian Government Department of Sustainability, Environment, Water, Population and Communities.

In Western Australia, legislative protection is afforded only to plants gazetted as "Rare" or "Extinct" under the Wildlife Conservation Act 1950, but the Department of Environment and Conservation also define Priority 1, 2, 3 and 4 conservation classes; see Declared Rare and Priority Flora List for definitions. The Western Australian conservation classes given here are sourced from FloraBase, the online plant database of the West Australian Herbarium.

Species within a listed conservation status have not been assigned a class at federal or state level, and may be assumed to be relatively secure.
2. ^Habit classes used here follow Nelson (1975): 99, Table 5:1 (Life-forms in Adenanthos), and this is the information source for all entries not otherwise cited. Five forms are recognised: trees, tall (over 2 m) shrubs, medium (1–2 m) shrubs, small (less than 1 m, but not prostrate) shrubs, and prostrate shrubs. Entries also indicate whether the species possesses a lignotuber. Those that do typically have many stems arising from the underground rootstock, resulting in a smaller stature and a mallee habit. Non-lignotuberous species have a single stem, and usually grow fairly erect.
3. ^Three leaf types are recognised, following Nelson (1975): 92, 94* "Holly-type" leaves are flat, and divided into spiny lobes. This leaf type is very common in Proteaceae, but occurs in only one Adenanthos species* "Entire of lobed" leaves are flat, with margins that are entire or lobed. These two cases are treated as a single type because it is common for species with lobed leaves to have entire leaves when young, or sporadically produce lobed leaves; and vice versa.* "Laciniate" leaves are deeply divided into many long, thin laciniae. This leaf type is typical of the species known as woollybushes.The source for this column is Nelson (1975): 92, 94, unless otherwise cited.
4. ^Nelson (1978a): 332.
5. ^Nelson (1978b).