ORCHIDACE^ 



Plate 106: Isotria verticillata 

 1 and 5, fruiting specimen, dravm natural size 

 from a specimen collected near North Easton, 

 Massachusetts, in 1920. 2, transverse section of 

 capsule, magnified. 8, a seedling with complete 

 root system, showing the stage of development 

 characterized by three leaves, drawn natural 

 size. 4, seed highly magnified. 5, lower part of 

 stem, showing vertical rhizome with winter bud 

 near the summit, several roots, and elongated 

 root-shoot bearing the remains of a rooted rhi- 

 zome and the winter bud and lower part of the 

 stem of another plant, all drawn natural size. 



[34] 



