Chiloschista pusilla var. orange

Chiloschista pusilla var. orange is a form of the species Chiloschista pusilla, a miniature epiphytic orchid described by Schlechter in 1919. The species is found in China, Sri Lanka, Malaysia, and Vietnam, on tree branches in humid areas at elevations of 300–1,500 m. The plant consists mainly of a cluster of flat roots on a very short central stem. The leaves appear seasonally, are small and insignificant, and usually fall before flowering. Photosynthesis takes place through the roots, not through permanent foliage.

The flowers are small, fragrant, cup-shaped, and approximately 0.75 cm across. Several flowers appear on a pendulous stem up to 15 cm long, usually in spring, between March and June. This variety is distinguished by its orange coloring. The bases of the petals and sepals have a woolly appearance; the column is short, while the lip has fine details that are most visible up close. This is not a foliage plant, but one valued for its roots and small, fragrant flowers.

Filtered or diffused light is suitable; avoid strong direct sunlight. A bright location with moving air helps the roots dry after watering. Average to warm temperatures are suitable for indoor cultivation; a slight difference between day and night is beneficial. High humidity helps, but it must be combined with ventilation. Stagnant air and water that does not dry on the roots cause problems.

It is not grown in a conventional pot. Mounting it on a piece of bark or on wood with a relatively smooth texture is the correct way to grow it. The species reacts poorly to being moved or detached from its support; once it has been securely mounted, leave it in place. Repotting or moving it should only be done if absolutely necessary, preferably when new roots appear that can attach to the support again.

Water frequently during the growing period, allowing the roots to become thoroughly wet and then dry on the surface between waterings. Do not leave the roots bone-dry for days, but do not keep them permanently wet without air circulation either. In winter, if light levels decrease, you can slightly increase the interval between waterings, without imposing a severe rest period. During active growth, fertilize very lightly after watering with orchid fertilizer.

If the plant stops growing, check the light, ventilation, and whether the roots are drying properly after watering. Soft, dark-colored roots or roots with a sour smell indicate excess moisture without sufficient air circulation. Seasonal leaves that fall before flowering are not, by themselves, a sign of disease in this species.