Pteronisis

Most specimens are smaller than 20 cm, but can reach up to at least 36 cm.^[2] The genus is mostly planar, pinnate, and profusely branched, with at least one exception.^[2] Axial internodes are generally colorless, greyish white, or sometimes pale shades of pink or red.^[2] Axial nodes are generally light to dark brown near the base of the plant, yellowish to yellowish brown in the principal branches, and pale yellow, white, or colorless, with a darker central band, in the pinnae.^[2]