8 Puget Sound Marine Sta. Pub. Vol. 1, No. 1 



0. The growing region is not at the transition place between blade 

 and stipe. 



6. The basal limit of considerable growth is at the beginning of the 

 flattened expanded part of the frond. 



7. The terminal limit of the growing region is difficult to fix. 

 Growth gradually decreases toward the tips of the fronds ; relatively lit- 

 tle growth occurs beyond two feet from the bulb in an ordinarj^ July plant. 



CITATIONS 



1. — 1906. — Frye, T. C. Nereocystis luetkeana. Bot. Gaz., 42:43-146. 



2. — 1908. — Setchell, W. A. Nereocystis and Pelagophycus. Bot Gaz., 

 45: 125-134. 



3. — 1912. — Riggj G. B. Ecological and Economic Notes on Puget Sound 

 Kelps. U. S. Senate Document No. 190, pp. 179-193. 



4. — 1912. — Setchell, W. A. The Kelps of the United States and Alaska. 

 U. S. Senate Document No. 190, pp. 130-178. 



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