This hybrid genus of orchids is utilized for grexes that include at least one parent species from the Oncidium and Rhynchostele genera.

x Oncostele 'Camcryu'

x Oncostele Bicsom gx

x Oncostele Catatante gx

This evergreen epiphytic orchid features elongated, sword-like leaves that can reach lengths of up to 50 cm. From late autumn through early summer, it bears clusters of 11 to 15 blossoms, showcasing dark red sepals and petals complemented by vibrant crimson lips.

x Oncostele Midnight Miracles gx 'Masai Red'

This evergreen epiphytic orchid reaches a height of up to 60 cm and features wide, ovoid pseudobulbs that support elongated, sword-like leaves of a mid-green hue. From late autumn through early summer, it produces racemes that can bear as many as 15 dark red blooms. The lips of these flowers are marked by a central red region bordered with white, with the intensity of the red patterns influenced by the temperatures experienced during the flowering period.

x Oncostele Midnight Miracles gx 'Masai Splash'

This medium-sized epiphytic orchid features long, strap-like leaves that reach lengths of 30-40 cm and remain green throughout the year. New growth emerges from the swollen base of the stem, known as the pseudobulb, which acts as a reservoir for water and nutrients. The pseudobulbs are oval and slightly flattened at the top, partially encased by two pairs of green, leafy sheaths. Flowering stems develop from the axils of these young, mature pseudobulbs and the accompanying sheaths, growing upright to lengths of up to 60 cm. Each stem supports between 15 to 20 flowers, with individual blooms measuring around 4 cm. The petals and sepals are a deep red, while the lip can be crimson with possible white margins, complemented by a contrasting white column.

x Oncostele Midnight Miracles gx 'Massai Red'

This medium-sized epiphytic orchid exhibits strap-like, evergreen leaves that typically measure between 30 and 40 cm in length. New growth emerges from the swollen base of the stem, known as the pseudobulb, which serves as a reservoir for water and nutrients. The pseudobulbs are oval and slightly flattened at the top, partially encased by two pairs of green, leaf-like sheaths. Flowering stems develop in the axils of both young and mature pseudobulbs, as well as from the sheaths. These upright stems can reach lengths of up to 60 cm and bear between 9 and 20 flowers. Each individual flower measures about 4 cm across, featuring deep red petals and sepals, a lip edged in white, and a contrasting white column.

x Oncostele Midnight Miracles gx 'Massai Splash'

x Oncostele Stirbic gx

This medium-sized epiphytic orchid grows sympodially, forming a cluster of large, oval, flattened pseudobulbs, each encased in two or three leafy sheaths arranged distichously. The evergreen leaves, which can grow up to 40 cm in length, emerge in pairs from the tips of the pseudobulbs. Flowering stems can reach heights of up to 75 cm, arising from the base of mature pseudobulbs nestled between the pseudobulb and the leafy sheaths. Each branched raceme produces numerous small flowers, approximately 3 cm across. The blooms exhibit a range of colors, including ruby-red, orange, and yellow, often accented with darker markings. Mature plants with multiple pseudobulbs typically bear two or more flower spikes.

x Oncostele Wildcat gx

This medium-sized epiphytic orchid features elongated, strap-like leaves that can reach lengths of 30 to 40 centimeters and are evergreen. New growth emerges from the swollen base of the stem, known as a pseudobulb, which serves as a reservoir for water and nutrients. The pseudobulbs are oval and slightly flattened at the top, partially enveloped by two pairs of green sheaths. Flowering stems develop from the axils of young, mature pseudobulbs and their sheaths, growing upright and branching to a length of up to 75 centimeters. Each stem supports multiple flowers, measuring 3 to 4 centimeters across, characterized by a bright yellow hue adorned with a dense dark red pattern. More established specimens may produce two or more flowering spikes.