Gazania rigens var. leucolaena, the trailing Gazania or rankbotterblom (also sometimes called the strandgousblom) in Afrikaans, is a perennial coastal daisy plant that forms dense mats, often on dunes. It grows in the Eastern Cape between Mossel Bay and Port Elizabeth. The leaves are lanceolate, tapering into the petiole. A feature is the conspicuous white-felted leaf surfaces. The daisy flowers have yellow rays. The specific name leucolaena (Latin) means white cloak, referring to the white woolly hair covering.
Gazania rigens var. uniflora has white felt-like hairs only on the lower leaf surfaces. It grows in the Eastern Cape and Kwazulu-Natal in similar coastal habitat. There is also a third variety, Gazania rigens var. rigens, with larger capitula (flower heads) and spots at the base of the yellow or orange ray florets. The latter variety only occurs in cultivation (JSTOR).
Gazania rigens used to be called Gazania splendens. Rigens means rigid. This may refer to the involucral bracts at the base of the capitulum or the pappus scales on the seeds. This plant is widely grown in all three forms as an ornamental groundcover in sunny places. It is naturalised in some coastal parts of Australia (Wikipedia and www.plantzafrica.com).