304 



MONOCOTYLEDONES. 



3-merous, pentacyclic flower 

 (Fig. 300 (7, D). They are 

 marsh-plants, with creeping 

 rhizome, triangular stem, 

 and long, sword-like leaves 

 (Fig. 300 A) i the inflor- 

 escence is terminal, appa- 

 rently lateral, being pushed 

 to one side by the upright, 

 sword-like spathe (Fig. 300 

 . Anthurium (Pr2 + 2, A2+2, 

 G2); Pothos; Orontium (unilocular 

 ovary with one ovule), etc. 



'h h 



FIG. 300. Acorus calamus: A habit (much 

 reduced) ; B inflorescence ; C a flower ; D 

 diagram ; E longitudinal section of an ovary ; 

 F an ovule. 



A 



FIG. 301. Arum maculatum. The 

 Bpnthe (h) in B is longitudinally 

 divided. 



