— 363 - 



h2. Leaves triangular, cordate, sag- 

 ittate, digitate, or pedatisect, 

 coetaneous with the flowers. 



(42) Typhonium. 



g2. Spadix 1-sexual, if 2-sexual, then the d* 



and $ inflorescences contiguous, not 



separated as in gl. 



hl. Leaves pinnatifid or pinnate. 



. . ' (44) Xenophia. 



h2. Leaves digitately or pedately 



3 — 9-partite with the primary 



segments simple or decompound. 



il. Simple; plants simultan- 



eously foliate and flowering. 



(40) Arisaema. 



12. Decompound, or the plants 



alternatively foliate andflow- 



ering. (43) Amorphophallus. 



e2. Leaves rather parallel-veined. 



fl. Apical portion of the spadix stérile, naked 

 ■ or provided with abortive flowers. 

 gl. Anthers not cornute. 



(31) Schismatoglottis. 

 g2. Anthers cornute. 



hl. Sheath of the pétiole ending at 

 the apex in free lips; ovules 

 basai. (29) Microcasia. 



h2. Sheath connected with the pé- 

 tiole quite to the apex; ovules 

 pariétal. (30) Bucephalandra. 

 f2. Spadix fertile quite to the apex. 

 gk Ovaries 1— 2-ovulate. 



hl. Staminodes commonly wanting. 



(34) Agloonema. 

 h2. Staminodes présent. 



(35) Aglaodorum. 

 g2. Ovaries at least 4-ovulate. 



hl. Thecae opening with an infra- 

 terminal horizontal cleft. 



(28) Diandriella. 



h2. Thecae opening with a terminal 



pore or chinck or an infrater- 



minal vertical cleft. 



il. Spathe wholly vegeto-per- 



sistent. 



kl. Staminodes many, at 



