Graphorkis Thouars

Epiphytic, sympodial herbs. Pseudobulbs clustered, conical-ovoid to cylindrical-fusiform, with several nodes, partially covered by fibrous persistent leaf-bases; roots of two types, those attached to substrate and those that are aerial, which are narrow, clustered and vertical. Leaves narrowly elliptic, acute to acuminate, plicate, petiolate. Inflorescence proteranthous, erect, paniculate, many-flowered; lowermost bracts conspicuous, uppermost bracts inconspicuous. Flowers resupinate, small to medium-sized, yellow, marked brown or purple. Sepals and petals free, spreading. Sepals spathulate to oblong-elliptic, subacute. Petals narrowly elliptic. Lip 3-lobed, spurred at base; disc with 2 keels; mid-lobe crenulate to bifid; spur often bent forward. Column with hirsute basal auricles; rostellum elongate; pollinia 2, waxy, sessile, attached to a solitary viscidium.