Name: Columnea microcalyx Hanst.

Synonym: Columnea gloriosa Sprague

Etymology: The genus name Columnea is reminiscent of the Italian naturalist Fabio Colonna. The specific epithet microcalyx is formed from the Greek words for “small” and “calyx” and refers to the small flower calyx.

First description: The species was published by Hanstein in 1866 in Linnaea 34: 408. The later name Columnea gloriosa was published by Sprague in 1911.

Origin/Distribution: Its natural range extends from southeastern Mexico through Central America to Colombia and northern Venezuela.

Location/Habitat: Columnea microcalyx grows as an epiphytic subshrub in moist tropical forests. In cultivation, it is suitable for a bright to partially shaded location without intense midday sun, with high humidity and good air circulation. Even temperatures of around 18–27 °C are favorable; prolonged periods below around 15 °C should be avoided.

Description and notes: The species produces long, pendulous shoots and is particularly well suited for hanging baskets or a suspended culture. The opposite, dark green leaves are softly hairy; the striking tubular flowers appear in warm red to orange tones among the foliage. We recommend a loose, humus-rich, and very airy substrate that retains moisture without becoming waterlogged. During active growth, water regularly with soft water and fertilize lightly; the surface may dry out slightly between waterings, but the root ball should not dry out completely.