BEAL ON MICHIGAN FLORA. 69 



807. S. sericea x Candida Bebb., forma denudata Bebb. Herb. Salicum; Flint, Dr. 

 Clark. 



808. S. sericea x Candida Bebb. Herb. Salicum, No. 32. Flint, Dr. D. Clark; Hub- 

 bardston, C. F. Wheeler. 



809. S. tristis Ait. Dwarf Gray Willow. Alcona Co.; Barren Lake, Cass Co.; Mon- 

 roe Co. Infrequent. 



:: 810. S. viminalis L. Basket Osier. Woodward Lake, Ionia Co.; S. Haven, L. H. 

 Bailey. 



BETULACEJE Agardh. Birch Family. 

 CARPINUS L. 



*811. C. Caroliniana Walter, American Hornbeam. Blue or Water Beech. Along 

 streams. Th. 



OSTRYA Scop. 



*812. 0. Virginica (Mill.) Willd. American Hop-Hornbeam. Lever-wood. Rich 

 woods. Common. Th. 



CORYLUS L. 



*813. C. Americana Walt. Wild Hazel-nut. Thickets. Common. Th. 



814. C. rostrata Ait. Beaked Hazel-nut. Hubbardston; and common northward. 

 St. Glair Co., C. K. Dodge; Alma, C. A. Davis. 



BETULA L. 



815. B. glandulosa Michx. Dwarf Birch. Burt's MS. Cat.; Keweenaw Co., 0. A. 

 Farwell. U. P. 



*816. B. lenta L. Cherry Birch. Sweet or Black Birch. Ann Arbor, Allmend. Cat.; 

 S. Haven, L. H. Bailey; Lenawee Co., W. J. B.; Hubbardston; Flint and northward to 

 L. Superior. Rare in the south, but attains a "monstrous size" on Drummond's Island, 

 Winch. Cat. Th. 



817. B. lutea Michx. f. Yellow or Gray Birch. Ann Arbor, Winch. Cat.; S. Haven, 

 L. H. Bailey, to L. Superior. Common along the line of the F. & P. M. R. R. and north- 

 ward to the Traverse country; a large tree south of the Grand-Saginaw valley; Alma, 

 Ann Arbor, C. A. Davis. 



*818. B. papyrifera Marshall. Paper or Canoe Birch. White Birch. Extends south- 

 ward to Lansing and perhaps further. Frequent at Crystal Lake, Montcalm Co., as a 

 small tree. 



*819. B. pumila L. Low Birch. Swamps. Variable. Frequent. Th. 



ALNUS Gaertn. 



820. A. Alnobetula (Ehrh.) K. Koch. Green Alder. A. viridis DC. "Dry rocky land," 

 Whitney's Cat.; Isle Royale, Dr. A. B. Lyons; high hills, Escanaba, E. J. Hill; Kewee- 

 naw Co., O. A. Farwell. Common. U. P. 



*821. A. incana (L.) Willd. Speckled or Hoary Alder. Borders of streams. The 

 prevailing alder in center of the State and in U. P. Common. 



822. A. rugosa (DuRoi) K. Koch. Smooth Alder. A. serrulata Willd. Smooth 

 Alder. Macomb Co.; Traverse City and S. Mich., Winch. Cat.; Burt's MS. Cat. Rare 

 or local. 



FAGACE^J Drude. Beech Family. 

 FAGUS L. 



*823. F. Americana Sweet. American Beech. F. ferruginea Ait. Common in L. P., 

 but rare in U. P. Occurs at Mackinac and Pictured Rocks; St. Mary's River, Macoun. 

 Th. 



CASTANEA Adans. 



824. C. dentata (Marsh.) Borkh. American Chestnut. C. sativa Americana S. 

 Wats. Occurs abundantly along an outcrop of Helderberg limestone in E. Monroe 

 Co. and Wayne Co., C. F. Wheeler; Ann Arbor, Dr. Steere; Detroit River to Lake St. 

 Clair, Macoun, in Can. Cat.; St. Clair Co., C. K. Dodge. S. E. 



