This beautiful autumn-blooming variety of O. vexillarium was introduced by Mr. Wm. Bull, who says it is specially remarkable in two peculiarities which it presents, namely, its habit of flowering in the late summer and autumn months, and its constancy as to color and markings; for, whereas it is usual to find in this species a variety of forms differing in the tint, in the marking, and in the shape of the flowers, in this they all come quite uniform as to size, color and form. It has rounder, blunter, less elongated pseudobulbs, and broader leaves, and the flowers are of a bright deep rose, the lip and petals being of the same hue, the former marked with three crimson lines on the disc, which is covered with a blotch of lemon-yellow, the striping being the same in all the flowers which are produced. It has received a first-class certificate from the Floral Committee of the Royal Horticultural Society.

Odontoglossum vexillarium rubellum.