21 Jan 1972 

 ^ 17 Feb 1972 



19 Dec 1971 



17 Nov 1971 



20 Oct 1971 



12 16 20 24 



Germination period (days! 



Figure 20. Effect of afterripening of S. alterniflora seed stored for 

 various lengths of time. Seed harvested 28 September 1971 

 at Oregon Inlet and stored in estuarine water until germi- 

 nation was begun on the dates indicated. 



53 



