250 



ANNALS NEW YORK ACADEMY OF SCIENCES 



Sepals glabrous; perennials . 

 Corolla 3 cm. long or less. 



CoroUa 2-3 cm. long; leaf-blades petioled, 



3-5-lobed, rarely subentire. 

 Corolla 15 mm. long; leaf -blades subsessile, 

 entire. 

 Corolla 4 cm. long or more. 



Inner sepals broadly obovate, rounded, 

 minutely cuspidate; outer ones lanceo- 

 late, cuspidate-acuminate. 

 Inner sepals oblong-lanceolate, cuspidate- 

 acuminate. 



Sepals 10-14 mm. long; stems usually 



glabrous and prostrate. 

 Sepals 8-10 mm. long; stems usually 

 pubescent and twining. 

 Sepals obtuse, subacute or rarely awned. 



B. Sepals aristately awned; foliage silvery-pubescent 



and sericeous. 

 Sepals not awned. 



Foliage densely pubescent. 



Pubescence shaggy; stems retrorsely hispid, 



blades hirsute, entire; sepals glabrous. 

 Pubescence velvety or sericeous; blades en- 

 tire or unequally 3-lobed; sepals serice- 

 ous. 

 Foliage glabrous or at least not densely hir- 

 sute sericeous. 



C. Stems stout and woody, often 2 cm. thick. West 



Indian. 

 Stems slender, less than 1 cm. thick. 



Corolla salverform; blades subtriangular or ovate- 

 lanceolate, more or less pilose. 

 Corolla funnelform or campanulate-funnelform. 

 Corolla white or yellowish- white. 



Leaf-blades oblong, rounded at the base. 

 Leaf-blades ovate, cordate or subcordate. 

 Corolla 3.5 cm. long, yellowish- white with 



a magenta base, blades entire. 

 Corolla 6-8 cm. long, white; blades en- 

 tire or 3-lobed. 

 Corolla or corolla-limb blue or purple. 



D. Corolla 2-3 cm. long; sepals 4-5 mm. long. 



Foliage glabrous; sepals acute. 

 Foliage more or less pubescent at least when 

 young. 



Peduncles longer than the leaves. 



Inflorescence 5 cm. long or less; corolla 

 minutely pubescent without, white 

 below. 



156. 



157. 



161. 



162. 



C. 



I. trifida. 



I. peninsularis. 



147. /. gracilis. 



I. signata. 

 I. tuxtlensis. 



169. /. perlonga. 



