Flora of the Malayan Peninsula. 



71 



embryo curved ; cotyledons foliaceous ; radicle inferior. — Distrib. Species 

 about 110; mostly tropical Asiatic and African. 



Lobes of the calyx as long as, or longer than, its 

 tube : — 



Leaves hairy beneath : — 



Calyx-lobes narrowly lanceolate, acuminate 

 Leaves everywhere glabrous : — 



Calyx-lobea broadly lanceolate, acute, unequal ... 

 Calyx-lobes broad, blunt, unequal ; bracts not 

 covering the calyces ... ... 



Calyx-lobea ovate, obtuse, puberulous ; bracts 

 longer than the calyces and covering them 

 Calyx-lobes narrowly lanceolate, about as long 

 as the tube ... ... 



Lobes of the calyx shorter than its tube : — 

 Lobes acute : — 



Tube of corolla 1 to 1"25 in. long : — 



Leaves sessile, cordate at the base, 2 to 3 in. 

 long 



Leaves elliptic to oblong-elliptic, not cordate, 

 6 to 9 in. long ; their petioles '3 to '5 in. 

 long 

 Tube of the corolla '25 to 3 in. long : — 



Leaves oblong-elliptic, shortly petiolate, 3'5 to 

 5 in. long; cymes with many divergent branches 8. I. undulata. 

 Lobes blunt : — 



Tube of corolla 1 to 125 in. long : — 



Cymes pendulous on long slender peduncles 9 



Cymes not pendulous ; peduncles 1 to 2 in. long : 



Main-nerves of leaves 15 to 20 pairs ... 10 



Main-nerves of leaves 8 to 12 pairs ... 17. 



1. I. Brunonis. 



2. I. merguensis. 



3. I. Kingstoni. 



4. /. multiiracteata. 



5. I. arguta. 



6. I, coccinea. 



7. I. congesta. 



I. 'pendula. 



I, opaca. 



I. grandifolia, var. 

 Kurziana. 



Tube of corolla 1 to 1'75 in. long : — 



Cymes lax, spreading, leaves petiolate, acute at 

 the base ; branching shrnbs (often tall) : — 

 Leaves thinly membranous, their main- 

 nerves 15 to 25 pairs ... ... 11. 



Leaves coriaceous, their main-nerves 10 to 

 12 pairs ... ... ... 12, 



Cymes not spreading, simple unbranched shrubs 

 1 or 2 feet high ; leaves sessile, oblanceolate, 

 cordate at the base : — 



Main-nerves of leaves 15 to 18 pairs ... 13 

 Main-nerves of leaves 8 to 10 pairs ... 14, 



Tube of corolla '8 in. long; cymes dense, 2 to 3 in. 

 in diam. ... ... ... ... 15. I. stricta. 



I. Lohhii. 

 I, fidgens. 



I. humilis. 



I. Scoriechinii. 



145 



