English: Spiny pennywort; Chinese dunce cap; Dunce cap; Dunce’s cap; Spiny dunce’s cap.
Synonym: Cotyledon spinosa; Crassula spinosa; Orostachys erubescens; Sedum erubescens.
BotanyHerb; succulent, small; slow growing.
Leaves: globose rosette; fleshy; grey green; with white soft spiny tips; 10 cm diameter; in symmetrical crowded pattern around the rosette; dies after blooming.
Inflorescence: racemes; 30 cm tall.
Flowers: small, insignificant; greenish yellow; 1 carpel.