Named for the triangular form of its petals — trigonopetala meaning "triangle-petaled" — this intermediate-cool species from Ecuador displays a precise, geometric floral structure that distinguishes it within the genus. A botanically interesting species for collectors drawn to the structural diversity of Masdevallias.

• Light: Grow under 50–70% shade cloth; direct sun causes rapid damage to its fine foliage and must be avoided.
• Temperature: Intermediate-Cool grower. Daytime 57–68°F (14–20°C), nights 46–55°F (8–13°C). Benefits from cool nights; avoid prolonged exposure to temperatures above 72°F (22°C).
• Humidity: Requires 75–90% relative humidity; its fine root system benefits greatly from a humidifier with steady air movement to prevent desiccation.
• Watering: Keep evenly and consistently moist; best grown mounted or in a small pot with fine bark to allow the roots to dry slightly between waterings, with more frequent misting during warmer months.

Additional Notes

Grown at Ecuagenera in the highlands of Ecuador under intermediate-cool mountain conditions. Plants are shipped bare root, well-established, and ready to mount or pot in fine bark or sphagnum moss.