(pronounced: ay-deen-ON-kohs)


Vandeae subtribe Aeridinae

If you are an AOS Member, access OrchidPro online to browse and search over 100,000 photos of award-winning orchids and more.

If you are not an AOS member, discover the benefits of joining today


Miniature monopodial epiphytes, rooting only at the base of the infrequently branching stems. Leaves alternate, distichous, leathery-rigid, linear-oblong, sometimes bilaterally compressed. Inflorescences axillary, sessile, few-flowered, congested racemes. Flowers cupped, green. Sepals and petals subsimilar, free. Lip unlobed or obscurely three-lobed, rigidly fused to the base of the column, with a single median papillose callus towards the base. Column very short, fleshy; pollinia 4, equal, with a common stipe and viscidium.


From the Greek aden, meaning gland, and onkos, meaning mass, referring to the papillose callus.


A genus of 15 species ranging from Thailand to New Guinea.

Care and Culture Card

See basic growing conditions and care information below.