as long as the petioles and leaves. Calyx of five, deep, ovato- 
acuminate segments, the three upper ones prolonged behind into 
a large and long, attenuated, curved spur. Petals five, longer 
than the calyx-segments, two upper ones small, obcorclato- 
cuneate, attenuated, three lower ones more than twice as large, 
cordate, two-lobed on a longer slender claw or stipes : all rich 
Vermillion red, yellomsh towards the claw. Stamens eight. 
Fig. 1. Flower deprived of petals :— magnified. 
