Lobostemon decorus, the Rooiberg healthbush, is a species belonging to the forget-me-not family.

[1] The flower buds are loosely arranged to form a globose unit, spreading slightly as they mature.

[2] Each flower is 17–30 mm (0.67–1.18 in) long, with the anterior petal lobes being larger than the rest.

[2] The anthers are borne on short filaments and the stamens only rarely protrude past the petals.

Lobostemon decorus has a longer calyx, fewer flowers per inflorescence, pale blue flowers (compared to deep blue with a pinkish base in L. marlothii) and narrowly oblong leaves (compared to the wider and often more lance-like leaves in L.