Fig. 534: Elatine chilensis: a, mature seed with conspicuous transverse ridges, x 

 60; b, branch, terrestrial form, x 6; c, habit, aquatic form, x 4; d, young flower, show- 

 ing the pair of large sepals, x 12; e, mature capsule, showing the third reduced sepal, 

 the petals and the stamens alternating with the carpels, x 6. (From Mason, Fig. 268). 



