ICfWA ACADEMY OF SCIENCE 
101 
997. Lactuca ludoviciana (Nutt) Riddell. Western Wild Lettuce. 
998. Lactuca floridana (L.) Gaertn. False or Florida Lettuce. 
999. Lactuca villosa Jacq. Hairy Veined Blue Lettuce. This species 
and the two preceding are common in thickets and low wooded 
places. 
1000. Lactuca spicata (Lam.) Hitchc. Tall Blue Lettuce. Occasional 
in low fields. 
AGOSERIS Raf. 
1001. Agoseris cuspidata (Pursh) Steud. Cuspidate False Calais. Not 
uncommon on dry hillsides. 
PRENANTHES (Vaill) L. 
1002. Prenanthes aspcra Michx. Rough White Wild Lettuce. Common 
in low meadows. 
1003. Prenanthes alba L. White Wild Lettuce. Common in woods and 
thickets. 
1004. Prenanthes racemosa Michx. Glaucous White Wild Lettuce. Not 
uncommon in moist fields and meadows. 
HIERACIUM (Tourn) L. 
1005. Hieracium canadensis Michx. Canada Hawkweed. Rather scarce 
in clearings, etc., in dry woods. 
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