52 PLANT LIFE 
bles in its general shape a small Prickly Pear 
Fig. 8.—Halimeda Opuntia. I.—General appearance of the 
plant. II.—A section through one of the flattened lobes to 
show the palisade4ike peripheral branches passing into 
the broader longitudinal filaments or strands. 
or Opuntia. From an attaching organ there 
rises a jointed and much-branched plant. 
