MARYLAND WEATHER SERVICE 495 



Helianthus angustifolius L. Narrow-leaved Sunflower. 



Coastal Zone; in open moist situations, preferring sandy soil; infrequent. 

 Worcester County, Ocean City (1229). 



Helianthus giganteus L. Tall Sunflower. 



Throughout the state; in moist open situations; frequent. 

 Cecil County, Elkton (383). 



Helianthus divaricatus L. Woodland Sunflower. 



Midland and Mountain Zones; in dry forests; common. 

 Allegany County, Braddock Run (902). 



Helianthus mollis Lam. Hairy Sunflower. 



Prince George's County, Riverdale (Joseph H. Painter). 



Helianthus dacapetalus L. Thin-leaved Sunflower. 



Throughout the state; in moist open situations; frequent. 

 Allegany County, Braddock Run (913). 



Helianthus strumosus L. Pale-leaved Wood Sunflower. 



Baltimore County, Warren (Robert K. Miller). 



Verbesina occidentalis (L.) Walt. Crownbeard. 



Throughout the state; in open situations; common. 



Verbesina alternifolia (L.) Britton. Actinomeris. 



Midland and Mountain Zones; in open situations; infrequent, except in 

 the vicinity of Cumberland, where it is common. 



Coreopsis verticillata L. Whorled Tickseed. 



Midland Zone; in dry forests; locally frequent. 

 Montgomery County, Laytonsville (1730). 



Coreopsis tripteris L. Tall Tickseed. 



Montgomery County, Great Falls (Robert K. Miller). 



Bidens laevis (L.) B. S. P. Smooth Bur-marigold. 



Throughout the state; in moist open situations; common. 



Bidens beckii Torr. Water Marigold. 



Coastal Zone. 



Bidens cernua L. Nodding Bur-marigold. 



Cecil County, Elkton (375). 



Bidens bipinnata L. Spanish Needles. 



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



Bidens trichosperma var. tenuiloba (A. Gray) Britton. 

 Coastal Zone; in tidal marshes; common. 

 Worcester County, Rehoboth (1154). 



Galinsoga parviflora Cav. Galinsoga. 



Throughout the state; in cultivated grounds and waste places; common. 

 Introduced from South America. 



