Flora of the Allegany State Park Region 61 



Epipactis pubescens (Willd.) A. A. Eaton (figure 11). 

 Rattlesnake Plantain 

 In rather dry woods, usually under or near hem- 

 locks. Rare. Three Sisters mountain, Willis creek 

 etc. 

 Corallorrhiza maculata Kaf. Large Coralroot 



In moist or rather dry humus of the forested areas 

 of the park region. Frequent. More rarely in sterile 

 soil of open places or thickets. 

 Microstylis unifolia (Michx.) BSP., Malaxis unifolia 

 Michx. Adder's Mouth 

 In dry or moist humus, chiefly in sections of sterile 

 or acid soil, and hence most abundant on or near the 

 conglomerate formation along the higher ridges of 

 the park area, either in open places or thin woods. 



Class 2 DICOTYLEDONEAE 

 Choripetalae 



SALICACEAE (Willow Family) 

 Populus grandidentata Michx. Large-toothed Aspen 

 In dry or moist, well-drained and fairly fertile or 

 somewhat sterile soils, chiefly on slopes and crests 

 of the ridges. Common. 

 Populus tremuloides Michx. American Aspen, Trem- 

 bling Aspen 

 In sandy, stony or gravelly, sterile or acid soils. 

 Locally common in many portions of the park area. 

 Salix nigra Marsh. Black Willow 



Alluvial bottomlands, stream banks and wet places. 

 Common in the lower, valleys. The only willow of 

 the region becoming treelike in size. The species of 

 Salix collected in the Allegany State Park and ad- 

 jacent region have been determined by Carleton R. 

 Ball of the United States Department of Agriculture. 



