MEUACE.-E. 473 



are equally simple and alternate in the Tiirrœa (fig. 465), met witii 

 iu all the warm regions of the old world and having the flower of 

 Qiiivisia, with a very long staminal tube supporting the anthers 

 inside its upper opening, often accompanied outside by a collarette of 

 small blades whose number and shape are variable. The ganiose- 



Fig. 465. Longitudinal section of flower. 



palous calyx has divisions of little depth, four or five in number ; 

 they become deeper in T. lanceolata^ of which a distinct genus has 

 also been made under the name of Calodrijum, and in which the 

 petals remain a certain time adherent by the base of their internal 

 VOL. V. 3 r 



