THE AMERICAN BOTANIST 



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blossoms, which resemble Cypripedimn regiuae in structure. 

 The labellum is of a dark gold, adorned within with scarlet 

 spots; and the short, blunt sepals and side petals are of a pale 

 yellow hue. The species — the only terrestrial one reported 

 for Old Mexico, ranges along the grassy hillsides in the oak 

 forests, from New Mexico southward to the Isthmus of 

 Panama. 



Our two yellow moccasin flowers (C. hirsiitmn and C. 

 parvifloriim) are among the most common of the native 

 Cypripedkiins, and are nearly related to the European yellow 

 lady slipper. Cypripediuin hirsiitum, the larger species, ranges 

 from the sub-Artie lands, w^here it is reported in latitude 54° 

 to 64° North, southward to Alabama and westward from the 

 ]\Iaine Woods to Colorado and beyond. It is easily cultivated. 



The small yellow moccasin flower (C. parviflorum) is the 

 only fragrant Cypripediuin reported for the Atlantic region. 

 It is nearly related to- C. juontanuin, a fragrant species of the 

 Pacific Slope and is frequently found with C. hirsutnin, with 

 which it intergrades. It has a similar continental range, al- 

 though it does not creep so far North. It is the most easily 

 cultivated among our native species. 



The common pink moccasin flower (C. acaiile) known as 

 the whippoorwill's-shoe, belongs to the two-leaves section. The 

 scape rises from the earth between two large, basal leaves, 

 while the terminal, large, pendulous slipper is bi-lobed. It is 

 of a delicate pink, green, and white color, with interior vein- 

 ings of dark pink. Cypripediuin acaule has a range from 

 Newfoundland southward to Alabama and westward from the 

 Maine Woods to Minnesota and Kentucky. In New England 

 it is found in sphagnum bogs, and in dark conifer woodlands 

 in company with C. arietinuin, C. hirsiituiu, C. parviUorum, 

 and C. reginae. Among our native Cypripediiims this is the 

 most difficult to cultivate. 



