Maxillaria porphyrostele Rchb.f.

Medium sized epiphyte. Pseudobulbs ovoid, to 4 cm long, compressed, clustered. Leaves 2, strap-like, to 20 cm long, to 1.5 cm wide. Flowers several around each pseudobulb, to 4 cm wide, yellow, labellum with reddish stripes; winter to spring. Sepals similar, lanceolate, partly spreading, pointed at tip. Petals slightly smaller, forward - pointing. Labellum 3-lobed, midlobe tongue-shaped, curved under at tip.


Source: Jeanes, J. (2005). Orchidaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 5. Flowering plants. Monocotyledons. The identification of garden and cultivated plants. University of New South Wales Press.