AN ENCYCLOPADIA 
OF HORTICULTURE. 531 
OSSIFIED. Become like bone—hard, brittle, and 
close in texture; e.g., a Peach stone. : 
OSTEOSPERMUM (from osteon, a bone, and 
sperma, a seed; referring to the hardness of the seed). 
8 “Old 
VAAATANCAUOO STIVOUUY vdNaHSO 
ORD. Composite. A genus comprising thirty-eight 
species of greenhouse shrubs, sub-shrubs, or rarely 
herbs, confined to South Africa. Flower-heads yellow, 
heterogamous, small or mediocre, at the tips of the 
Osteospermum— continued. 
branches, pedunculate, solitary or loosely paniculate ; 
involucre campanulate or sub-hemispherical; receptacle 
flat or convex. Leaves alternate, or rarely opposite, 
entire, toothed, or pinnatifid. The species are probably 
now lost to cultivation. 
OSTRICH FERN. See Onoclea germanica. 
