

Arethusa and Pogonia 



The orchid belle of our swamps, 

 so fitly named for the water nymph 

 of the ancients, Arethusa, A. bid- 

 bosa, presents one of the most 

 :#/^ interesting problems in fertil- 



ization furnished by our wild orchids. 

 I have indicated a group of the or- 

 chids in their usual marshy haunt, 

 and in Fig. i, separately, a series of 

 diagrams presents sec- 

 tions of the flower, natu- 

 ral size and duly indexed. 

 The column is here quite 

 elongated, forked at the tip, 

 the space between the forks 

 occupied by the anther, which 

 is hinged to the upper division. 

 This anther lid is closed tightly, 

 with the sticky mass of pollen 

 hidden behind it in the cavity. 

 The stigma is on the external inner 

 side of the lower division, and thus 

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