MARYLAND WEATHER SERVICE 485 



Viburnum alnifolium Marsh. Hobble-bush. 



Mountain Zone; in moist rocky forests, being most abundant in the 



shade of hemlocks. 

 Garrett County, Boiling Spring (1966). 



Viburnum acerifolium L. Maple-leaved Viburnum. 



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

 Balttoore, Walbrook (428). 



Viburnum pubescens (Ait.) Pursh. Downy-leaved Viburnum. 



Midland and Mountain Zones; in dry forests; infrequent. 

 Allegany County, near Plintstone (1020). 



Viburnum dentatum L. Viburnum. 



Throughout the state; in swamps and moist forests; common. 

 Garrett County, near Oakland (527). 



Viburnum molle Michx. Soft-leaved Viburnum. 



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



Viburnum venosum Britton. Coastal Viburnum. 



Wicomico County, Tonytank Creek (1187). 



Viburnum cassinoides L. Appalachian Tea. 



Rare in the Midland Zone, common in the Mountain Zone; in swamps 



and bogs. 

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



Tnayerville (2056). 



Viburnum nudum L. Withe-rod. 



Common in the Coastal Zone, known from a single locality in the Mid- 

 land Zone; in swamps and open wet situations, being most abundant 

 in sandy swamps. 



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

 near Rehoboth (1153). 



Viburnum prunifolium L. Black Haw. 



Throughout the state; in moist and dry forests and in open situations; 



common. 

 Somerset County, Marion (1259). 



Triosteum perfoliatum L. Fever-wort, Horse-gentian. 



Midland Zone; in dry forests and open situations; frequent. 

 Washingon County, Hancock (702) ; Dorchester County, near Bucktown 

 (1617).* 



Triosteum angustifolium L. Yellow Horse-gentian. 



Baltimore, Walbrook (W. Ralph Jones). 



•Both of these numbers -were determined by the United States National Herbarium 

 as Triosteum aurantiacum Bieknell. 



