MARYLAND WEATHER SERVICE 421 



Achroanthes unifolia (Michx.) Raf. Green Adder's-mouth. 



Mountain Zone; in dry forests; rare. 

 Garrett County, near Crellin (1979). 



Leptorchis liliifolia (L.) Kuntze. Large Twayblade. 



Baltimore County, near Towson (Robert K. Miller). 



Corallorhiza wisteriana Conrad. Wister's Coral-root. 



Midland and Mountain Zones; in dry forests; infrequent. 

 Garrett County, Crellin (1980). 



Corallorhiza multiflora Nutt. Large Coral-root 



Throughout the state; in moist and dry forests; infrequent. 

 Baltimore County, near Towson (Robert K. Miller). 



Corallorhiza corallorhiza (L.) Karsts. Early Coral-root. 



Midland Zone. 



Tipularia unifolia (Muhl.) B. S. P. Crane-fly Orchis. 



Coastal Zone; in moist and dry forests; infrequent. 

 St. Mary's County, Piney Point (M. A. Chrysler). 



Limodorum tuberosum L. Grass-pink. 



Queen Anne's County, near Sudlerville (1673). 



Aplectrum spicatum (Walt.) B. S. P. Adam-and-Eve. 



Baltimore County, near Cockeysville (Robert K. Miller). 



DICOTYLEDONES. 



SAURURACEAE. 



Saururus cernuus L. Lizard's Tail. 



Coastal and Midland Zones; in swamps and marshes and about the 

 margins of ponds; being common in the Coastal Zone a,nd infrequent 

 in the Midland Zone. 



JUGLANDACEAE. 



Juglans nigra L. Black Walnut. 



Throughout the state in upland forests, preferring deep loam soil; rare 

 in the Coastal Zone, apparently being absent out of cultivation in the 

 lower Eastern Shore; frequent in the Midland and Mountain Zones. 



Juglans cinerea L. Butternut. 



Throughout the state in upland forests, preferring the rich humus soils 

 of the lower slopes of mountain ridges; apparently absent from the 

 Eastern Shore, rare in the Western Shore District of the Coastal Zone, 

 infrequent in the Lower Midland District, frequent in the Upper Mid- 

 land District and the Mountain Zone. 



