P'.tolo 6y] [Waller Rossite 



FIG. 481. MOUNTAIN DKAGON'S-MOUTH (Horminum pyrenaicum). 



An interesting genus, containing only one species, of the order Labiat ; the purple flowers bear in the lower 



part of the corolla-tube palisades of elastic hairs to protect the honeyfrom unbidden guests. MOU.vriI.VOUS 



PARTS OP TEMPERATE EUROPE. 



391 



