This section is from the book "The Standard Cyclopedia Of Horticulture Vol2", by L. H. Bailey. See also: Western Garden Book: More than 8,000 Plants - The Right Plants for Your Climate - Tips from Western Garden Experts.
(Greek, hidden crown). Composite. Two or 3 hoary herbs, by some united with Arctotis, apparently not in the trade, but sometimes mentioned in gardening literature: diffuse or creeping, with basal or alternate leaves that are dentate or lyrate-pinnatisect, villous above and white-tomentose or woolly beneath: heads radiate, yellow or more or less purplish, rather large, peduncled, or solitary on leafless scapes, the rays sterile: achene densely villous, 5-ribbed, the pappus paleaceous and in 1 series. C. calendulaceum, R. Br. (C. lusitanicum, Hort.), is a free-blooming annual with pale yellow rays and a dark brown disk, the heads on 1-flowered peduncles: leaves pinnati-fid, 3-nerved. Cape and Austral. B.M. 2252. G.C. III. 28:390, desc. C. Forbesianum, Harv., and C. ni-veum, Nichols. (Microstephium niveum, Less.), of S. Africa, may be more or less in cultivation Both have yellow rays, in the latter the heads being solitary and the plant decumbent or creeping and the leaves ovate, cordate or orbicular; in the former the leaves are mostly pinnatisect, the margins revolute.