344 



Orchidaceae 



Pogonia 



50 



Map 708 



Tnphora trianthophora (SwJ Rydb. 



50 



Map 709 



Isotria verticillata (Willd.) Raf. 



1464. POGONIA Juss. 



1. Pogonia ophioglossoides (L.) Ker. Rose Pogonia. Map 707. For- 

 merly frequent in peat bogs in the lake area, now infrequent to rare 

 on account of drainage. In addition to the counties shown on the map it 

 has been reported from Fulton and Marshall Counties. 



Newf., Que., Ont. to Minn., southw. to Fla. and Tex. 



1466. TRfPHORA Nutt. 



1. Triphora trianthophora (Sw.) Rydb. {Pogonia trianthophora (Sw.) 

 BSP.) Nodding Pogonia. Map 708. An infrequent plant throughout the 

 state. It is generally found in deep humus, usually in beech and sugar 

 maple and oak woods. The flowers are mostly nodding but the fruit is 

 erect. I once found a large colony on a bare, sandy flat in a deep, wooded 

 ravine. Besides the counties indicated on the map it has been reported 

 from the following counties : Fayette, Hamilton, and Steuben. 



Maine to Wis., southw. to Fla., Ala., and Mo. 



1467. ISOTRIA Raf. 



1. Isotria verticillata (Willd.) Raf. (Pogonia verticillata (Willd.) 

 Nutt.) Whorled Pogonia. Map 709. An inconspicuous plant and appar- 

 ently very rare and erratic in its distribution. In the lake area it is found 

 in sphagnum in tamarack bogs and south of this area it has been found in 

 white oak woods. 



Maine, N. Y. to Mich., southw. to Fla. and Tex. 



1474. ARETHtSA [Gronov.] L. 



1. Arethusa bulbosa L. Arethusa. Map 710. An extremely rare plant 

 found in sphagnum in bogs. In addition to the counties shown on the map 



