Stapelia gigantea is a crazy succulent with amazing flowers that look like huge fuzzy starfish up to 12 inches across!

Stephania erecta (syn. S. pierrei) is a cool novelty houseplant that grows as a small vine from a rounded caudex.

'Mandela's Gold' (formerly 'Kirstenbosch Gold') is a special form of Strelitzia reginae with yellow flowers.

Streptocarpus Ladyslippers 'Yellow Blue Eye' is a relative of the African violet with bi-color blooms of lemony-yellow with purple eyes.

Stylophorum diphyllum or celandine poppy is a rare, bright yellow poppy relative for the woodland garden.

Stylophorum lasiocarpum has bright yellow poppy-like flowers atop mounds of very cool dissected foliage.