This section is from the book "Handbook Of Hardy Trees, Shrubs, And Herbaceous Plants", by W. Botting Hemsley. Also available from Amazon: Handbook of hardy trees, shrubs, and herbaceous plants.
This genus differs from Helichrysum in having a soft feathery pappus. The species are numerous, inhabiting the southern and western parts of Australia and South Africa. H. eximium is a beautiful Cape species with thick woolly leaves and crimson globular flower-heads. H. speciosissimum, from the same country, has white and orange flower-heads. There are three or four annual species, natives of Australia, in cultivation.
1. H. incanum, syn. H. brachyrhynchum. - A dwarf tufted branching plant covered with a silvery down. Leaves linear, crowded at the base of the stem. Flower-heads large, on leafless peduncles. Involucral bracts yellow, pink, or white.
2. H. Sanfordii, syn. H. Humboldtii. - In this species the flower-heads are small and numerous, in dense clusters, bright yellow changing to a mineral green when dry.
Lawrencella rosea, sometimes referred to Helichrysum, is an annual about 1 foot high, with linear nearly glabrous leaves and pink or white flower-heads on long peduncles. And Schaenia oppositifolia, is separated from the neighbouring genera on account of the central achenes being abortive and the outer fertile ones being broad and flat with a pappus of barbellate bristles. It is the only species, an annual from 1 to 2 feet high with a rough or woolly pubescence and corymbose flower-heads. Outer invo-lucral bracts brown, inner clawed, with a spreading white or pink limb.
We might extend this enumeration, but as they are chiefly delicate annuals we believe we have given an ample selection.