All the species are arborescent or shrubby, varying in size from the most stately of forest trees to the dwarfish bush.
They are shrubby plants climbing over surrounding vegetation by means of tendrillike prolongations of the midrib of the leaf beyond the leaf-tip.
This is particularly marked in certain lichens of shrubby habit.
These are connected by the presence of peculiar types, Proteaceae, Restiaceae, Rutaceae, &c., mostly shrubby in habit and on the whole somewhat intolerant of a moist climate.
The singular shrubby Amaryllids, Vellozieae, are common to tropical and South Africa, Madagascar and Brazil.