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Fruit a loculicidally dehiscent capsule splitting from above; seeds 1-several per loculus; testa smooth or variously rugose or tuberculate; cotyledons plicate, 2-partite.
Stamens 5, opposite the petals, connate at the base and alternating with 5 ligulate staminodes; anthers sagittate, dehiscing longitudinally.
Ovary sessile, often tomentose, 5-locular; ovules 1–? per loculus;style short or long; stigmas 5, linear.
Flowers bisexual, yellow, solitary or geminate or several on a common peduncle in the upper leaf-axils.
Perennial herbs or shrubs, herbaceous parts usually densely stellate-tomentose or tomentellous.
Bracts of the epicalyx 3, from linear-lanceolate to broadly ovate, persistent.
Petals 5, usually obovate, unequal-sided, convolute in aestivation.
Leaves serrate-crenate or entire; stipules linear or subulate.
Sepals 5, free almost to the base.
