petioles, a span or more long, in distant, opposite pairs, ovate, 
sharply acuminated, very coarsely serrated, penniveined, and re- 
ticulated. Spike of flowers compound, subracemose ; bracteal 
leaves very small. Calyx at first small, two-lipped, upper lip 
erect, large, lateral and inferior teeth small: the calyx in fruit 
becomes inflated, whence the specific name. Corolla with the 
long, slender ¢wée singularly bent at an angle; the /imé two- 
lipped, spread open like the mouth of a snake. Ovary four- 
lobed, set upon a large fleshy gland, with a blunt spur-like pro- 
jection on one side. 
Fig. 1. Flower. 2. Calyx and pistil. 3. Mouth of the corolla. 4. Ovary 
and its fleshy receptacle :—all more or less magnified. 
lll ie 
