242 LxxxA'iii. co:ntoltulace.e. 



Stems twiuing. 

 Leaves as broad as long, wlnte-woollj- beneath. 

 Outer bracts several ; corolla less than 1 in. 



long 7. I. pilosa. 



Leaves longer than broad, not wliite-woollj 

 beneath. 



Heads enclosed iu a large solitary boat- 

 shaped outer bract 8. I. in vohicrata. 



Bracts minute, not enclosing the flowers ; 



corolla 1^ in. long 2. I. Clarkci. 



Sepals glabrous (sometimes fiaelj pubescent in 

 /. campanulata). 



Seeds shaggy on the angles. 



Stems often muricate ; corolla hypocrateri- 



form, reaching 4^ in. long 10. I. lonyijlora. 



Seeds not shaggy on the angles. 

 An aquatic plant. 



Stems hollow, trailing in mud or floating. 11. /. aqnaiica. 

 Terrestrial plants. 

 Sepals obtuse. 



Flowers in subunibellate cymes; outer 

 sepals shorter than the inner ; corolla 



less than 2 in. long 12. I. sepiaria. 



Flowers in lax panicles ; sepals equal ; 



corolla :|-1 in. long 13. l. staplir/nna. 



Flowers in corymbosely-branched cymes ; 



sepals subequal ; corolla 3 in. long... 14. /. cci/npanidaia. 

 Sepals acute. 



Flowers 1-3 together ; corolla } in. 



long 15. I. ohscura. 



Leaves lobed (occasionally entire in /. 'pes-tigridis). 

 Prostrate (rarely twining) herbs. 



Leaves deeply 2-lobed or sometimes only emarginate ; 



corolla rose-purple, exceeding 1 in. long 16. /. hiloba. 



Leaves digitately or the upper sometimes pedately 3-7- 



partite ; corolla white, less than 1 in. long 17. /. disscc/a. 



Twiuing herbs (sometimes creeping in /. laciniata). 

 Leaves paluiately or digitately S-D-lobed. 

 Sepals glabrous. 



Flowers in paniculate cymes. 



Corolla purple, exceeding 1 in. long 18. 1. digitafa. 



Peduncles 1-3-flowered. 



Sepals ribbed and wrinkled on the bact ; corolla 



white, exceeding 2 in. long 19. 1. laciniata. 



Sepals not ribbed on the back, dotted with white 

 specks inside ; corolla 1^-2 in. long, violet 



with a purple tube 20. I. pahnafa. 



Sepals hairy. 

 Flowers in raany-flowered, pedunculate heads ; 



corolla 1 in. long, pale-pink 21. I. pcs-(igridis. 



1. Ipomoea calycina, C. B. Clarice, in Hook. f. Fl. B. I. v. 4 (1883) 

 p, 201. Stem twilling, sparingly clothed with long spreading hairs. 

 Leaves 2-3 by I5-2 iu,, ovate, acutely acuininate, entire, sparsely hairy 

 or nearly glabrous, cordate at the base witli a wide sinus ; petioles ^- 

 1| iu. long, slender, clothed with long spreading hairs. I'lowers 1-3; 

 peduncles hairy ; pedicels hairy, about as long as the peduncles ; bracts 

 ^ in. long, o\ate, acute. Sepals in flower ^ in. long, unequal, ciliate, 

 the outer in fruit ^ by \ in., lanceolate-sagittate with obtuse auricles, the 

 inner linear-lanceolate. Coi'olla white, tubular, scarcely 1 in. long. 

 Capsules I in. long, ovoid, pointed, glabrous. Seeds i- iu. long, villous 



