Phalaenopsis violacea Witte (1860.)
Belongs in the Luddemannianae Subsection of the genus.

Widely distributed species occurring in Malaya, Sumatra and Borneo. Prefers warm, shady, moist places, next to streams and rivers.

Flowers are 4-6 cm across and color is variable. Plants from Borneo have the boldest flower colors and pure white form is also known.

The form called "coerulea" is shown below.
Certain clones are scented. This feature is rare in the Phalaenopsis genus;
there are experiments to transfer this highly desirable property into hybrids.
 
Doritis pulcherrina var. buyssoniana