488 THE PLANT LIFE OF MARYLAND 



Taraxicum taraxicum (L.) Karst. Common Dandelion. 



Throughout the state; in cultivated grounds and waste situations; 

 common. Introduced from Europe. 



Sonchus oleraceus L. Hare's Lettuce. 



Throughout the state; in waste situations; common. 



Sonchus asper (L.) All. Spiny Sow-Thistle. 



Throughout the state; in waste situations; frequent. 



Lactuca scariola L. Prickly Lettuce. 



Throughout the state; in waste situations; locally common. Introduced 

 from Europe. 



Lactuca canadensis L. Wild Tall Lettuce. 



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

 Cecil County, Conowingo (407). 



Lactuca hirsuta Muhl. Hairy Wood-Lettuce. 



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



Lactuca sagittifolia Ell. Arrow-leaved Lettuce. 



Washington County, Hancock (W. Ralph Jones). 



Lactuca floridana (L.) Gaert. Florida Lettuce. 



Baltimore (W. Ralph Jones). 



Lactuca spicata (Lam.) Hitchcock. Blue Lettuce. 



Midland Zone; in moist forests; frequent. 

 Allegany County, near Cumberland (1919). 



Lactuca villosa Jacq. 

 Coastal Zone. 



Hieracium venosum L. Veined Hawkweed, Rattlesnake Weed. 



Throughout the state; in dry forests; common. 

 Cecil County, Conowingo (40S). 



Hieracium marianum Willd. Maryland Hawkweed. 



Baltimore County, Timonium (Robert K. Miller). 



Hieracium paniculatum L. Panicled Hawkweed. 



Upper Midland District and Mountain Zone; in moist and dry forests; 



common. 

 Frederick County, Thurmont (1757). 



Hieracium scabrum Michx. Rough Hawkweed. 



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

 Talbot County, Easton (614). 



Hieracium gronovii L. Hairy Hawkweed. 



Common in the Coastal Zone; frequent in the Midland Zone; in dry 



forests. 

 Baltimore County, Towson (Robert K. Miller). 



Nabalus albus (L.) Hook. Rattlesnake-root. 



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



