176 METASPERMAE OF THE MINNESOTA VALLEY. 



APLECTRUM Nutt. Gen. II, 197 (1818). 

 Benth. and Hook., Gen. PL III, 497; Durand, Ind. Gen. Phan. 386; 

 Engler and Prantl, Nat. Pflcmz. 2, VI, 156 (Pfltzerj. 

 Living species: 1; N. America. 



Aplectrum spicatum (Walt.) B. S. P. Cat. N. Y. (1888). 



Arethusa spicata Walt. F1. Car. 222 fl788). 

 Cijnibidium hiemale Muhl. Willd. Spec. IV, 107 (1805). 

 Aplectrum hiemale Nutt. Gen. II, 197 (1818). 

 Corallorhiza hiemalis Bart. F1. N. Am. II, 52 (1822). 

 Wats, and Couli.. Gray's Man. 6 ed. 500; Britt., Fl. N J. 230; Mac, 

 Fl. Can. II, 4; Upham, Fl. Minn. 142; Chap., Fl. S. St. 455; Wats., Fl. 

 Calif. II, 133; Coult., Fl. Colo. 342; Engl. Pfltzer, Nat. Pflanz. II, 6, 156; 

 Gov., 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. 



Herb. : Leiberg 70, Blue Earth Co. ; Leiberg 71, Blue 

 Earth Co. ; Sandberg 554, Washington Co. 



DICOTYLEDONES. 



archichlamydeae. 



XXII. JUGLANDACEAE. Walnut Family. 



Endlicher, Gen. PI. 1125 (1840); Benth. and Hook., Gen. PI. Ill, 

 397 (1880); Engler in Engler and Prantl, Nat. Pflanz. 3, I, 19 (1887). 



Oenera: 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. 



JUGL4NS Linn. Gen. 727 (1737) p. p. 

 Wallia Alef. Bonplandia, 335 (1861). 

 Benth. and Hook., Gen. PI. Ill, 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 — Jiu/laiulipliijl- 

 lum, Potomac region {Fontaine); Upper Cretaceous, Nebraska, 

 Greenland (Heer, Lesijuercaux); Tertiary. Alaska, Vancouver, 

 Iceland, Spitzbergen {Heer), France {tiapovta); Pliocene, Japan 

 {Nathorsl); France {Suporia). 



