Name: Zootrophion serpentinum Luer
Synonyms:
Etymology: serpentinum = snake-like, winding — presumably refers to the creeping, elongated growth form of the rhizome or the shape of the shoots.
First description: 1984 by Carlyle A. Luer in Selbyana (7: 349).
Origin / Distribution: Ecuador.
Location / Habitat: Grows epiphytically in moist, cool to temperate montane cloud forests of the Andes. The species thrives in shady locations on moss-covered branches with consistently high humidity and steady air movement.
Description & Notes: Zootrophion serpentinum is a fascinating miniature orchid distinguished by an unusually creeping, elongated rhizome for the genus, giving the plant a somewhat climbing or snake-like habit. The upright ramicauls are enclosed by tubular sheaths, each bearing a single leathery, elliptic leaf. The fleshy flowers display the genus’s characteristic “window flower,” in which the sepals remain fused at the tips, leaving only lateral openings for pollinators.

In cultivation, this species requires partial to full shade in cool to temperate conditions. Since it has no pseudobulbs for water storage, the substrate (fine moss or a fine bark mix) must never dry out completely. High humidity and lime-free irrigation water are essential for its fine roots.