Name: Oncidium rodrigoi Königer
Synonyms:
Etymology: rodrigoi = named in honor of Rodrigo Escobar, a well-known Colombian orchid enthusiast and collector of the 20th century.
First description: 1999 by Willibald Königer in the specialist journal Arcula (8: 235).
Origin / Distribution: Colombia (Antioquia) and Ecuador.
Location / Habitat: Growing epiphytically in cool, humid montane cloud forests at elevations of 2,300 to 2,700 meters. The species primarily inhabits mossy branches in shady to partially shaded areas with consistently high humidity and steady air movement.
Description & Notes: Oncidium rodrigoi is a miniature orchid from the section Heterantha. It has a short rhizome and narrow, elliptical, distinctly laterally compressed (ancipite) pseudobulbs. Each pseudobulb bears a single terminal, lanceolate leaf that tapers toward the base like a petiole. The inflorescence emerges from the base of the pseudobulb and produces the delicate, filigree-like flowers typical of this group. In cultivation, this highland species requires consistently cool to temperate conditions with a noticeable nighttime temperature drop. High humidity of at least 75–80% and continuous, gentle air circulation are essential to prevent standing moisture on the shoots. The substrate (e.g., fine bark or pure moss in small pots) should be kept evenly moist and must never be allowed to dry out completely. Using low-salt irrigation water (rainwater or reverse-osmosis water) protects the delicate root system.
In vitro culture: You will receive a flask containing 4 young plants. The plants are generally already large enough to be removed from the flask. After opening, carefully remove all the nutrient medium from the fine roots with lukewarm water and plant the young plants in a very fine, airy, slightly moist substrate. During the first few weeks, we recommend very high humidity, cool to temperate conditions, and sheltered light; then gradually acclimate them to normal growing conditions and avoid allowing them to dry out completely.