2” pot. This is either a subspecies or another name for Den macrophyllum. It is a Southeast Asian species that blooms in spring and summer with sprays of fragrant, long-lasting yellow flowers with purple striped markings on the lip and prominent hairs or “spikes” on the backs of the sepals. Plants grow medium- to large-sized, and are relatively temperature-tolerant. Photo shows flowers of our Den macrophyllum plant. Young seedlings.