Ipomcea.] xc. convolvulace.e (baker and rendle). 



133 



85. I. aquatica. 



86. I. stolonifera. 



87. I. repens. 



88. I. biloba. 



91. 



I. simplex, var. 



obtusisepala. 



89. 



I. [Protect. 



90. 

 92. 



I. arenicola. 

 I. Welwitschii. 



94. 

 95. 



I. Batatas. 

 I. leucantha. 



ft Stem creeping or prostrate ; leaves very variable. 

 Sepals blunt. 



Leaf -apex more or less acute, blade narrowing 

 upwards ...... 



Leaves with blunt, rounded, or incised apex. 

 Leaves linear to oblong .... 



Leaves reniform ..... 



Leaves generally suborbicular, bilobed or 

 with emargiuate apex, base very obtuse 

 or truncate ..... 



Sepals subobtuse to shortly acute. Leaves narrow 

 linear (li lin, broad) .... 



Sepals acute. Leaves broadly oblong, base sub- 

 cordate ....... 



Sepals acuminate. 



Leaves oblong to elliptic, base entire 

 Leaves linear to linear-lanceolate . 

 ** Leaves more or less trilobecl ; sepals shortly acute. 



Corolla campanulate-funnel-shaped, li in. long . 

 Corolla 9 lin. long ...... 



*** Leaves palinately divided. 

 Corolla 6 lin. long. 



Divisions of leaf 5, pinnatind to pinnatisect 



(serrated only in var. malvcefolia) . 

 Divisions of leaf 5, elliptic, blunt . 

 Corolla 1 in. long. Flowers solitary . 

 Corolla l|-2i in. long. Peduncles few- to 

 many-flowered. 

 Outer sepals not gibbous at the base. 



Corolla 1^-2 in. long. Leaf-segments 5, 

 the lowest sometimes unequally bifid 

 to tripartite • . . . . 



Corolla li in. long. Leaf-segments 7, 

 narrow-linear to lanceolate , 

 Outer sepals gibbous and tuberculate at the 

 base. Leaves biternately pedatisect. 

 Peduncles 1-3-flowered. Corolla about 2 in. 

 long. 

 Sepals 4 lin. long, gibbous at the base 

 Sepals 5 lin. long, bicalcarate at the base 102. I. calcarata. 

 Peduncles many-flowered. Corolla 2i in. long 103. I. saccata. 

 Corolla 4 in. long. Outer sepals toothed at the base 104. I. odontosepala. 

 Corolla 3 in. long. Sepals lanceolate, acuminate 93. I. bolnsiana. 

 § 7. Eeiospermum. — Habit various ; plants generally more or less shrubby, with 

 erect, suberect, or climbing stems, and generally more or less hairy. Leaves often 

 ovate with a cordate base, but sometimes oblong, oval, orbicular, rarely lanceolate. 

 Flowers generally large ; sepals generally chartaceous or coriaceous, rarely mem- 

 branous, hairy or glabrous, usually obtuse, sometimes cuspidate, elliptic to orbi- 

 cular, sometimes ovate. Corolla large, showy, funnel-shaped or salver-shaped. 

 Seeds (where known) long hairy on the angles, or whole surface villous. 

 * Sepals chartaceous or coriaceous, 



f Corolla funnel-shaped or campanulate -funnel 

 shaped. 

 Sepals 1 in. or more long. Corolla 4-5 in. long. 

 Sepals hairy. 



96. 



1)7. 



98. 



99. 



100. 



I. dissecta. 

 I. pidchella. 

 I. quinquefolia. 



I. palmata. 

 I. stellaris. 



101. /. dasysperma. 



