Terrestrial acaulescent erect herbs, sometimes tuberous. Stems unbranched. Leaves radicular, rosulate, equal to strongly unequal in a pair, venation pinnate, stomata randomly scattered, foliar nectaries absent. Flowers axillary, 1-6, in umbellate, subcymose, or thyrsoid, inflorescences; long pedunculate; bracteoles small, lanceolate; pedicellate. Calyx lobes free; corolla orange or red, nearly trumpet-shaped, but slightly bent downwards; stamens included, filaments not connate, anthers all coherent, coherent in 2 pairs, or all free, dehiscing by longitudinal slits, thecae parallel; staminode very small; disc a single large dorsal gland; ovary superior, stigma 2-lobed. Fruit a dry, loculicidally dehiscent, 2-valved capsule, valves opening to 180°.
Guayana Highlands of Venezuela present, Guyana present, Southern America
A genus of 2 species of the Guayana Highlands of Venezuela and Guyana, and neighbouring Brazil