Fig. 53: Posidonia Oceania: a, habit, X V-y, b, rhizome, X 2; c, inflorescence, enlarged; 

 d, flower, enlarged; e, vertical section of flower, enlarged, (a, b, V. F. c-e, from Hut- 

 chinson, The Families of Flowering Plants, Vol. 2, Fig. 351). 



