MARYLAND WEATHER SERVICE 457 



Triadenum petiolatum (Walt.) Britton. Larger Marsh St. John's-wort. 



Coastal Zone, Worcester, Wicomico and Charles Counties; in river 



swamps and stream swamps; infrequent. 

 Worcester County, Mattaponi Landing (1142). 



ELATINACEAE. 



Elatine americana (Pursh.) Arn. Water-wort. Mud Purslane. 



Wicomico County, tidal flats of the Wicomico river near Salisbury 

 (1264a). 



CISTACEAE. 



Helianthemum majus (L.) B. S. P. Hoary Frostweed. 



Throughout the state; being most abundant on the light soils of the 



Coastal Zone. 

 Wicomico County, Tonytank Creek (1179). 



Helianthemum canadense (L.) Michx. Long Branched Frostweed. 



Throughout the state; in dry forests and open situations, being most 



abundant in the Coastal Zone. 

 Washington County, near Hancock (S24). 



Lechea minor L. Pin Weed. 



Throughout the state; in dry forests and open situations; common. 

 Cecil County Egg Hill (395). 



Lechea racemulosa Michx. 



Cecil County, Hog Hills (392). 



Lechea villosa Ell. 



Anne Arundel County, open sandy situations near Benfield (Robert K. 

 Miller). 



Lechea leggettii Britton & Hollick. 



Throughout the state; in dry situations; infrequent. 



Allegany County, Cumberland (929) ; Wicomico County, near Vienna 

 (1313). 



Hudsonia tomentosa Nutt. Wooly Hudsonia. 



Coastal Zone. 



VIOLACEAE. 



Viola palmata L. Early Blue Violet. 



Throughout the state; in dry situations; common. 



Viola obliqua Hill. Thin-leaved Wood Violet. 



Coastal and Midland Zones; in moist forests; infrequent. 

 Talbot County, near Trappe (1516). 



Viola cucullata Ait. Marsh Blue Violet. 



Throughout the state; in moist forests; common. 

 Baltimore County, Lorely (Robert K. Miller). 



