— 361 — 



d2. Spadix rather sessile at the base of the spathe ; perigon- 

 ium wanting; spathe and ovaries provided with many 

 hard, acicular cells. (3) Scindapsus. 



c2. Ovaries at least 2-ovulate. 



dl. Spathe and ovaries without acicular cells. 



el Creeping herbs; spathe conchiform, erected. 



{\3) Amydrium. 



e2. Climbing shrubs; spathe cordiform, recurved or 

 reflexed. (12) Epipremnopsis. 



d2. Spat. and ovaries provided with many hard, acicularcells. 

 el. Ovaries 1-locular; ovules on asinglebasalorparietal 

 placenta, commonly 2, rarely 4-8. (4) Epipremnum. 

 e2. Ovaries completely or incompletely 2-3-locular; 

 ovules on 2—3 often very prominent or even 

 connate placentae, commonly numerous, rarely 

 2 on each placenta or in each loculus. 

 fl. Ovules 2 on each placenta or in each loc- 

 ulus, near the base. 



gl. Seeds exalbuminose (introduced Amer- 

 ican plants). (2) Monstera. 

 q2. Seeds albuminose (Asiatic plants). 



(5) Raphidophora. 



Î2. Ovules more than 2, commonly many, arrang- 

 ed along the whole length of the placentae. 



(5) Raphidophora. 



b2. Flowers 1-sexual, the higher 6, the lower $ and whether or not 

 provided with rudimentary stamens (staminodes). 

 cl. Spadix with a single ? flower at the base, dorsally nearly 

 entirely connate with the spathe; floating aquatics. (1) P/s^/û. 

 c2. Spadix with more numerous $ flowers at the base, if 

 (rarely) with a single one, then dorsally not connate with 

 the spathe; terrestrials or no floating aquatics. 

 dl. 6 Flowers consisting of 2 or more connate (congen- 

 itally united) stamens (synandria). 

 el. ? Inflorescence with many abortive stamens 

 (staminodes). (26) Dieffenbachia. 



e2. $ Inflorescence without abortive stamens (stami- 

 nodes) or with a few ones scattered hère and there. 

 fl Ovaries mutually connate (congenitally 

 united). (23) Syngonium. 



f2. Ovariesmutuallyfreethough often contiguous. 

 gl. Spathe with the lamina recurved or 

 reflexed. (W) Remusatia. 



g2 Spathe with the lamina erected. 



ht. Spadix with a stérile or flowerless 

 appendix produced beyond the 

 d" inflorescence. 



