Scenarius

Scenarius is a genus of plants in the family Orchidaceae, commonly known as ghost orchids or pale-green orchids. The genus is native to the subtropics and tropics of the Americas. Plants in the genus Scenarius are characterized by their pseudobulbs, which are small and often hidden, and their monopodial growth habit. They possess a single, fleshy stem that grows continuously, with leaves arising at intervals along its length.

The flowers of Scenarius species are typically inconspicuous, often greenish or white, and may be fragrant. They are adapted for pollination by specific insects. The genus is known for its epiphytic nature, meaning the plants typically grow on other plants, such as trees, without being parasitic. They absorb nutrients and moisture from the air, rain, and debris that collects around their roots.

Reproduction in Scenarius, like other orchids, involves a symbiotic relationship with specific fungi in the soil for seed germination. The seeds are microscopic and dust-like, relying heavily on this fungal association for initial growth.

There are several recognized species within the genus Scenarius, each with varying distribution and specific habitat requirements. Conservation concerns exist for some species due to habitat loss and the difficulty in cultivating them outside of their natural environments. The genus is of interest to botanists and orchid enthusiasts for its unique adaptations and ecological role within its native ecosystems.