C. H. Ostenfeld: Contributions to West Australian Botany. I. 21 



each other than is the case with the species within the other 

 subgenera of Cymodocea. 



C. antarctica has some very striking features in its growth 







Fig. 10. Cymodocea antarctica, from Yallingup Cave District. 



To the left a "seedling"', in the middle a much branched assimilative shoot, 



to the right the younger part of a rhizome with its assimilative shoots. 



(Photo, of herbarium material.) 



and biology, and these features have been interpreted in very 

 different ways by different authors. Therefore I think it appro- 

 priate to give a description of the structure and biology so far 



