236 OHIO BIOLOGICAL SURVEY 



2041. Sonchus asper (L.) Hill. Spiny Sow-thistle. General. Nat- 



uralized from Europe. 



2042. Lactuca virosa L. Prickly Lettuce. General and abundant. 



Naturalized from Europe. 



2043. Lactuca saligna L. Willow Lettuce. Franklin, Greene, Mont- 



gomery. From Europe. 



2044. Lactuca hirsuta Muhl. Hairy Lettuce. Tuscarawas, Ross, 



Union. 



2045. Lactuca canadensis L. Tall Lettuce. General. 



2046. Lactuca sagittifolia Ell. Arrowleaf Lettuce. Fairfield County. 



2047. Lactuca villosa Jacq. Hairy-veined Blue Lettuce. Miami, 



Montgomery. 



2048. Lactuca floridana (L.) Gaertn. Florida Lettuce. From Brie, 



Franklin, and Ross Counties westward. 



2049. Lactuca spicata (Lam.) Hitch. Tall Blue Lettuce. Rather 



general. 

 2049a. Lactuca spicata aurea Jennings. Holmes, Defiance, Cuyahoga, 

 Franklin, Athens. 



2050. Nabalus altissimus (L.) Hook. Tall Rattlesnake-root. General. 



2051. Nabalus albus (L.) Hook. "White Rattlesnake-root. General. 



2052. Nabalus asper (Mx.) T. & G. Rough Rattlesnake-root. Erie 



County. 



2053. Nabalus racemosus (Mx.) DC. Glaucous Rattlesnake-root. Pul- 



ton, Lucas, Ottawa, Erie, Huron, Wyandot, Champaign, 

 Clark. 



2054. Nabalus erepidineus (Mx.) DC. Corymbed Rattlesnake-root. 



Cuyahoga, Champaign, Warren. 



2055. Hieracium canadense Mx. Canada Hawkweed. Erie, Cuyahoga. 



2056. Hieracium paniculatum L. Panicled Hawkweed. Cuyahoga, 



Wayne, Richland, Fairfield, Monroe. 



2057. Hieracium scabrum Mx. Rough Hawkweed. General. 



2058. Hieracium gronovii L. Gronovius' Hawkweed. Fulton, Brie, 



Franklin, Gallia. 



2059. Hieracium marianum Willd. Maryland Hawkweed. No speci- 



mens. 



2060. Hieracium venosum L. Veined Plawkweed. Eastern Ohio ; west 



to Cuyahoga, Knox, Fairfield, Jackson, and Lawrence 

 Counties. 



