Blue Fern (Microsorum thailandicum)

Overview

The Blue Fern (Microsorum thailandicum) is a striking epiphytic fern from Thailand, prized for its intense metallic blue iridescence on the frond surfaces, caused by specialized epidermal cells.

Taxonomy

Description

Fronds are simple, lanceolate, 20–40 cm long, leathery, with a distinct blue-green sheen that shifts with light angle. The rhizome is creeping, covered with brown scales. Sori are round, arranged in rows along the midrib.

Habitat and Cultivation

Epiphytic on trees in humid tropical forests. Mount on bark or cork with sphagnum moss. Requires high humidity, bright indirect light, and warm temperatures. Mist frequently; avoid water sitting on fronds.