sheathing dract at the base of the peduncle, and a very small one 
at the base of each ovary. The flowers are two inches across. 
Sepals and petals spreading; the former rather small, oval or ob- 
long-oval; the latter broad-ovate, twice as large as the sepals, 
slightly twisted. Zip spreading, undivided, cucullate, the base 
contracted, having a prominent blunt spur behind, the lamina 
orbicular, pubescent on the upper surface, the margin most 
beautifully fringed and ciliated: the colour of the lip is of the 
same deep bright-yellow as the rest of the flower, but the disc 
above is orange-colour, leaving a pale margin, and an arch or 
semicircle of very deep orange is seen at the base of the lamina, 
which suggested the specific name of the plant. Co/wmn short, 
with a broad blunt tooth on each side the anther-case. ’ 
Fig. 1. Column and anther. 2. Portion of the fringe of the lip :—magnified. 
