The extensive families of Epacrideae, Stylideae, Restiaceae, and the tribe of Decandrous papilionaceae, hardly exist, and the still more characteristic and extensive family of Proteaceae is reduced to a few species of Grevillea, Hakea, and Persoonia.
"Expedition into Central Australia"
Charles Sturt
papilionaceae; it could, however, in the absence of experimental proof, be regarded only as a "working hypothesis."
"Darwin and Modern Science"
A.C. Seward and Others