It is endemic to Taiwan[1] (has been found in the north and central regions in or near Taipei, Hsinchu and Taichung).

It has axillary scapes (1–3 cm long) that are slender and erect, with a few sheaths close by its base.

[3] B. tokioi has two palely yellowed flowers, sometimes having red spots or striations.

Its lip is attached to the apex of its thin, un-hornlike column foot (2-2.4 mm long by 1 mm wide) is ovate-triangular and purple-tinged, with a rounded to obtuse apex, and a base decurrent into a long, entire, glabrous, membranaceous, three-nerved claw.

Its triangularly conic anther is white with an area of red, and its two pollinia are ovoid to ellipsoid.