406 METASPERMAE OF THE MINNESOTA VALLEY. 
Living species: 8; 2, N. America; 1, circumboreal. 
Fossil species: Tertiary, Sagor, Radoboj (Unger); 
Miocene, Thiiringen (von Fritsch). 
Ledum Jatifulium Arr. Lam. Il. 363 (1791). 
L. groenlandicum Retz. Scand. (1799). 
L. palustre var. latifolium MicHx. Fl. N. Am. I (1803). 
Wats. and Coult., Gray’s Man. 6 ed. 321; Mac., Fl. Can. I, 301; Up- 
ham, Fl. Minn. 94; Engl. Drude, Nat. Pflanz. IV, 1, 34; Gray, Syn. FI. II, 
1, 43. 
North America: Greenland, Labrador, Newf., N. Br. 
to Pac.;S. to Minn., Mich., N. N. Eng. and Penn. 
Minn. valley: Far N. district and possibly N. W.; 
woods and barrens. 
HERB.: Roberts 80, Duluth; Bailey 257, Vermilion lake; 
Sandberg 381, Chisago Co.; MacM. and Sheld. 31, Brainerd. 
ANDROMEDA Liny. Gen. 344 (1737) em. BENTH. 1. c. (1876). 
Benth. and Hook., Gen. Pl. Il, 587; Durand, Ind. Gen, Phan. 248; Eng- 
ler and Prantl, Nat. Pflanz. 4, I, 42 (Drude); Schenck, Palaeophyt. 722; 
Baillon, Hist, Pl. XI, 131, in part. 
Living species: 1; circumboreal and to temperate 
regions. 
Fossil species: Numerous in Cretaceous of N. Amer- 
ica; 10-20 (Lesquereaux, Heer, Ward, Newberry); Tertiary, 
Europe (Saporta, Ettinghausen, Heer, Unger); Switzerland, 
Spitzbergen, Alaska, Greenland; Tertiary N. America, Alaska, 
Florissant, etc.; 40-50 spec. described; to be much reduced. 
Andromeda polifolia Linn. Spec. 393 (1753). 
A, rosmarinifolia PuRsH, Fl. Am. 291 (1814), 
A. glaucophylla Link, Enum. I, 394 (1821). 
Wats. and Coult., Gray’s Man. 6 ed. 316; Britt., Fl. N. J. 161; Mac., 
Fl. Can. I, 297; Upham, Fl. Minn. 94; Trautv., Fl. Sib. 80; Nym., Fl. Eur.; 
Hook., Fl. Gt. Brit. 252; Herd., Fl. Eur. Russ. 82; Engl. Drude, Nat. 
Pflanz. IV, 1, 44; Gray, Syn. Fl. II, 1, 31; Hart., Scand. F). I, 319. 
Europe to Tyrol and Hungary; N. Asia. 
North America: Labrador and Greenland to Pac. and 
Arctic ocean; S. to Minn., Penn. and N. J. 
Minn. valley: N. EH, district; rare; deep, rich woods 
or barrens. 
Hers.: Bailey 280, St. Louis River; Bailey 295, St. 
Louis river; Sandberg 380, Chisago Co. 
LYONIA Nutr. Gen. I, 266 (1818). 
( Cassandra and Pieris Don, Edin. Phil. Journ. X VIT, 158-159 
1834), 
