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CHAPTER III. 



Sub-class.— MELANOSPOR^, 

 Order.— DICTYOTEJ^. 

 GiQrwx^.— ZONARIA,'' Ag, 



ZONARIA TOURNEFORTII, LaM. 



Q^i^^ANY plants of this species have been dis. 

 ^_>^'^ tributed under the name of Z. flava. It is 

 common in southern CaHfornia, as some species of 

 this genus are in aM tropical and sub-tropical seas. 

 It grows from a short, flattened stem, a widely- 

 spreading, flat, fan-shaped frond, two to four inches 

 high, with obscure concentric bands of a darker color 

 on the olive green of the plant. The extreme rounded 



* Zonaria — belted or zoned. 



