BEAL ON MICHIGAN FLORA. 127 



*i 



'1994. L. spicata (Lam.) Hitchc. Tall Blue Lettuce. L. leucopliaea A. Gray. Fre- 

 quent. Th. 



1995. L. spicata integrifolia (T. &. G.) Britton. L. Iciicopliaea integrifoUa T. & G. 

 Belle Isle, Detroit. C. F. ^^'heeler. 



*1995a. L. virosa L. Prickly Lettuce. Usually given the name L. Seariola L., which 

 has pinnatifid leaves. Common. 



CREPIS L. 



*1996. C. te.ctorum L. Narrow -leaved Ilawksbeard. Introduced. 



HIERACIUM L. 



*1997. H. Canadense Miehx. Canada Hawkweed. Woods. Frequent. Th. 

 *1998. H. Gronovii L. Hairy Hawkweed. Dry soil. Ionia Co.; Flint; Macomb Co.; 

 S. W. Mich., Wright Cat.; Alma. Infrequent. C. & S. 



1999. H. longipilum Torr. Long-bearded Hawkweed. Fields. Macomb Co.; Trav- 

 erse Citv, S. W.. Wright Cat.; Grand Rapids. Coleman; Algonac. W. S. Cooper; Tuscola 

 Co.. C. A. Davis. Scarce. L. P. 



2000. H. Marianum Willd. Maryland Hawkweed. Shore of Gi'and Traverse Bay, 

 C. F. Wheeler. 



*2001. H. paniculatum L. Panicled Hawkweed. Macomb Co.; S. Mich., Wright 

 Cat. Scarce. C. & S. 



2002. H. Pilosella L. Mouse-ear Hawkweed. Introduced at Benzonia, G. A. Clark. 



*2003. H. scabrum Michx. Rough Hawkweed. Woods; Alma. Common. Th. 



*2004. H. umbellatum L. Narrow-leaved Hawkweed. Marquette, C. F. Wheeler. 



*2005. H. venosum L. Rattlesnake- weed. Dry soil in pine woods, or on oak land. 

 Abundant at Point aux Pins, at the entrance to Lake Superior, Macoun, Can. Cat.; 

 Port Austin, Ann Arbor, C. A. Davis. Frequent. 



NABALUS Cass. PREiYANTHES Vaill. 



*2006. N. albus (L.) Hook. Rattlesnake-root. Prenanthes (illxt L. Woods. Com- 

 mon. Th. 



*2007. N. altissimus (L.) Hook. Tall White Lettuce. Prenanthes altissima L. Rich 

 woods. Frequent. Th. 



*2008. N. racemosus (Michx.) DC. Glaucous White-Lettuce. Prenanthes racemosa 

 Michx. Lenawee Co., G. F. Comstock; Flint; Macomb Co.; shore of L. Mich., near 

 Sitting Rabbit. Winch. Cat.; S. W.. Wright Cat.; Cheboygan Co.. Beardslee, Keweenaw 

 Co., Farwell; Raw kawlin, Ann Arbor, Grass Lake, Bay Port, C. A. Davis. Rare. Th. 



2009. N. trifoliatus Cass. Tall Rattlesnake-root. Washington, Dr. D. Cooley. 



AMBROSIACE.^ Eeicbenb. Ragweed Family. 



IVA L. 



2010. I. xanthiifolia (Fresen.) Nutt. Marsh Elder. Highwater-shrub. Keweenaw 

 Co., 0. A. Farwell. The farthest station east known. 



AMBROSIA L. 



*2011. A. artemisiaefolia L. Roman Wormwood. Ragweed. Hog-weed. Bitter- 

 weed. Roadsides. Introduced from tlie west. Abundant. Th. 



2012. A. psilostachya DC. Manistee, F. P. Daniels; shore of Lake Huron, C. K. 

 Dodge; Keweenaw Co., O. A. Farwell. 



^*2013. A. trifida L. Great Ragweed. Common. Low grounds along Grand and 

 Maple Rivers; northward to Keweenaw Co., O. A. Farwell. 



2014. A. trifida integrifolia T. & G. Low land. Keweenaw Co., 0. A. Farwell. Th. 



XANTHIUM L. 



*2015. X. Canadense IMill. Common in waste places and along river banks. 

 2015a. X. commune Britton. Britton and Brown's Flora. 



2016. X. echinatum Murr. X. Canadense echinatum A. Gray. Shores of Great 

 Lakes. 



