428 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 12 



PLATE 56 



Fig. 1. Ampliiroa foliacea. Small portions of clumps of this 

 species to show the variation in branching and in shape 

 of the segments. The left-hand figures are typical of the 

 broader types, and show the costa well. The upper center 

 figure is intermediate and the upper right-hand one 

 shows an extremely narrow example, with the branches 

 hardly at all alate-bordered. The lower right-hand 

 figure shows an extremely compact, stunted form. 

 Mexico, x 2.0. 



