8CITAM1NBJB. 



327 



the Cannaceae and Marantaceee may be represented in the follow- 

 ing manner (calyx, corolla and gynoeceum being omitted) : 



CANNACBJB. 



I'J W 



st 

 w lab 



MARANTACE.ZE. 

 w w 



st 



IVl 



w The lateral staminodes, " wings ; " st fertile stamen ; * the suppressed stamen ; lab 

 labellum ; c hood ; wi inner-wing. 



The labellurn of the Cannacese corresponds with the hood of the Marantacese and not 

 with the labellum of the Zingiberacese. 



Order 4. Marantacese. The flower is asymmetrical. Only 

 1 or 2 of the 3 stamens in the outer whorl are present as stami- 

 nodes ; in the inner whorl 2 are petaloid and of the sixth stamen 



FIG. 317. Cilatliea zebrina. 



one-half is developed as a staminode and the other half bears 

 a bilocular anther. One ovule only in each loculus. The style 

 is strongly curved and at first enclosed in one of the staminodes 

 (hood) of the inner whorl ; later on it springs elastically forward 

 towards the other staminode (inner- wing) of the same whorl. 

 The stigma is very oblique or 2-lipped. Two of the three loculi 

 of the ovary, in some (Haranta, Thalia) become small and empty. 

 Embryo curved. Leaves in two rows, with sheath, stalk, and blade 

 (Fig. 317); at the base of the last is a characteristic swelling 

 (articulus). Phrynium, Calathea, Strornanthe, Ctenanthe, Saranthe, etc. 

 About 150 species ; tropical, especially America. The starch of the rhizome 

 of Maranta arundinacea is OFFICINAL, " West Indian Arrowroot." 



