A. ridicula. The species are otherwise so near, that as 

 regards the disposition of the corolla-lobes these may 

 represent an analogous case to that of the right- and left- 

 handed spiral of univalve shells. 



I am indebted to Mr. Bull for the specimen here figured, 

 which flowered in September, 1886, in his establishment. 



Desce. A very slender climber ; stem, petioles, peduncles 

 and surface of perianth clothed with stiffish very long 

 horizontally-spreading hairs. Leaves four to five inches in 

 diameter, membranous, orbicular-reniform with a cordate 

 base ? bright green, pale beneath, pubescent above with 

 scattered short rather stiff hairs, finely tomentose, with 

 closely reticulate nerves beneath; nerves very slender, 

 pedately spreading, with a few -stiff long bristles towards the 

 base ; petiole one to two inches long ; stipular leaf orbicular, 

 recurved. Flowers axillary, solitary, about two inches 

 long exclusive of the limb ; sac at the base obliquely oblong 

 and tube of about equal length, the latter very slightly 

 swollen above the base upwards, pale yellow with broken 

 veins of dull brownish purple ; limb with reflexed margins, 

 bright yellow spotted with red purple, produced dorsally 

 into two divaricate deflexed linear-obtuse lobes about an 

 inch long and half an inch broad ; these lobes bear scat- 

 tered clavellate glands on capillary stalks; mouth and 

 throat of the tube stuffed with deflexed white hairs ; sac 

 within villous and with the mouth deeply inflexed. 

 Staminal column short, very shortly stipitate, produced 

 into six triangular obtuse stigmatic lobes, with thickened 

 margins, and bearing six linear anthers. Ovary very 

 slender. — /. D. H. 



Fig. I, Portion of under surface of leaf ; 2, sac of perianth laid open ; 3, staminal 

 column : — all enlarged. 



