Name: Zootrophion dayanum ‘Xanthium’

Etymology: The genus name Zootrophion refers to the animal-like appearance of the unusual flowers; dayanum honors the British orchid collector John Day. ‘Xanthium’ refers to the yellowish coloration of this selection.

Origin/Distribution: This species is found in the Andes of Colombia, Ecuador, and Peru.

Location/Habitat: Miniature epiphytic orchid of humid mountain and cloud forests. Cultivate in shade, cool to intermediate temperatures at approx. 12–23 °C, and with high humidity. Keep fine sphagnum or a very fine, airy bark mix evenly moist; good air movement is important.

Description and Notes: Zootrophion dayanum forms dense clumps of short shoots with single leathery leaves. The selection ‘Xanthium’ displays yellow to greenish-yellow flowers instead of the more heavily purple-marked typical form. The fleshy sepals remain largely fused, leaving only lateral openings.