176 METASPERMAE OF THE MINNESOTA VALLEY. ¢ 
APLECTRUM Nort. Gen. II, 197 (1818). 
Benth. and Hook., Gen. Pl. ILI, 497; Durand, Ind. Gen. Phan. 386; 
Engler and Prantl, Nat. Pflanz. 2, VI, 156 (Pfitzer). 
Living species: 1; N.America. 
Aplectrum spicatum (WaLT.) B.S. P. Cat. N. Y. (1888). 
Arethusa spicata WALT. FI. Car. 222 (1788). 
Cymbidium hiemale Muni. Willd. Spec. IV, 107 (1805). 
Aplecirum hiemale Nutt. Gen. II, 197 (1818). 
Corallorhiza hiemalis BART. Fl. N. Am. IT, 52 (1822). 
Wats. and Coult.. Gray’s Man. 6 ed. 500; Britt., Fl. N J. 230; Mac., 
Fl. Can. II, 4; Upham, Fl. Minn. 142; Chap., Fl. 8. St. 455; Wats., Fl. 
Calif. II, 133; Coult., Fl. Colo. 342; Engl. Pfitzer, Nat. Pflanz. II, 6, 156; 
Cov., Fl. Ark. 222. 
North America: Ont. to Saskatchewan and Oregon; S. 
to N. Eng., N. J. and Ga.; ‘W. to Minn., Mo. and Ark. 
Minn. valley: Forest district; local and rare; peat 
bogs and tamarack swamps. 
Hers.: Leiberg 70, Blue Earth Co.; Leiberg 71, Blue 
Earth Co.; Sandberg 554, Washington Co. 
DICOTYLEDONES. 
ARCHICHLAMYDEAE. 
XXII. JUGLANDACEAE. Walnut Family. 
Endlicher, Gen. Pl. 1125 (1840); Benth. and Hook., Gen. Pl. III, 
397 (1880); Engler in Engler and Prantl, Nat. Pflanz. 3, I, 19 (1887). 
Genera: 6; temperate regions of N. hemisphere; with- 
in the tropics in Central America and the Himalayan region. 
Tertiary and Cretaceous distribution to the Polar regions. 
Species: 33, living; 30+, fossil in Upper Cretaceous, 
Tertiary and Quaternary beds. 
JUGLANS Linn. Gen. 727 (1787) p. p. 
Wallia ALEF. Bonplandia, 335 (1861). 
Benth. and Hook., Gen. Pl. III, 398; Durand, Ind. Gen. Phan. 379; 
Engler and Prantl, Nat. Pflanz. 3, I, 24 (Engler): Schenck, Palaeophyt. 
445. 
Living species: 7-8; temperate N. hemisphere ‘and in 
Jamaica. Europe and mid. Asia, 1; E. Asia and Japan, 2; 
Russian Europe, 1; N. America, 4-5; E. Sts., S. Sts., Canada, 
2; Tex. and N. Mex., 1; California, 1. 
Fossil species: 10+; Lower Cretaceous—Juglandiphyl- 
lum, Potomac region (Fontaine); Upper Cretaceous, Nebraska, 
Greenland (Heer, Lesquereaux); Tertiary, Alaska, Vancouver, 
Iceland, Spitzbergen (Heer), France (Saporta); Pliocene, Japan 
(Nathorst); France (Saporta). 
