SPADICIFLOR.3S. 



305 



B. CALLED. Flowers hypogynous, naked, $ . Calla (C. 

 palustris). All flowers in the spike are fertile, or the upper ones 

 are ; 6-9 stamens ; ovary unilocular with many basal ovules. 

 Marsh-plants with creeping rhizome and cordate leaves. Honstera, 

 RJiaphidophora, etc. 



C. AKINEJ;. Flowers monoecious, naked, <$ -flowers on the upper, 

 ? on the lower part of the spadix. Arum (Fig. 301). The spadix 



terminates in a naked, club-like portion (&) ; below this is a 

 number of sessile bodies (rudimentary flowers), with broad bases 



FIG. 302. Colocas-iu Boryi. 



-and prolonged, pointed tips (6); underneath these are the $- 

 flowers (m),each consisting only of 3-4 short stamens, which eject 

 vermiform pollen-masses through the terminal pores ; then follow, 

 last of all, ? -flowers (/), each of which consists of one unilocular 

 ovary, with several ovules. Perennial herbs, tuberous, with 

 cordate leaves. Dracunculus ; Biarum ; Arisarum ; PinrlHa (Athcrurus) tcr- 

 nata with leaves bearing 1-2 buds. Zantedeschia cethiopica (Eichardia, Nile lily) ; 

 $ , 2-3 stamens ; f? with 3 staminodes, 1-5-locular ovary (S. Africa.) In some 

 genera sterile flowers are present between the $ and ? portions of the spadix 

 (e.g. in Philodendron) ; in Ambrosinia a lateral, wing-like broadening of the axis 

 of the spadix divides the -cavity of the spatlie into two chambers, the anterior 



