196 METASPERMAE OF THE MINNESOTA VALLEY. 
HUMULUS Linn. Gen. 750 (1787). 
Lupulus GAERTN. Fruct. I. 358 (1788). 
Baillon, Hist. Pl. VI, 216; Benth. and Hook., Gen. Pl III, 256; Durand, 
Ind. Gen. Phan. 874; Engler and Prantl, Nat. Pflanz. 3, I, 96 (Engler). 
Schenck, Palaeophyt. 476. 
Living species: 2; N. temperate regions. 1, cosmo- 
politan; 1, China and Japan. 
Fossil species: 2-8; Pliocene, France (Saporta). 
Humulus lupulus Linn. Spec. 1457 (1753). 
Cannabis lupulus Scop. Fl. Carn. II, 263 (1772). 
Lupulus communis GAERTN. Fruct. 75 (1788). 
Humulus americanus Nutr. Journ. Acad. Phil. V, 181 (1840). 
Wats. and Coult., Gray’s Man. 6 ed. 464; Britt., Fl. N. J. 216; Webb., 
Fl. Neb. 111; Mac., Fl. Can. I, 429; Upham, Fl. Minn. 125; Chap., F1. 8. 
St. 414; Coult., Fl. Colo. 331; Nym., Fl. Eur.; Hook., Fl. Gt. Brit. 363; 
Herd., Fl. Eur. Russ. 118; Wats., King Exp. 821; Roth., Wheel. Exp, 239; 
Cov., Fl. Ark. 219; Engl., Nat. Pflanz. JII, 1,97; Hart., Fl. Seand. I, 345. 
North America: N.S., Q., Ont. to Man., 58° N. lat., 
Brit. Col.; S. to N. Mex. in mts.; E. across cont. to N. Eng. 
and Ga. Introd. in Atl. states ? 
Minn. valley: Throughout; climbing on underbrush or 
trees; banks of streams and edges of woods. 
Here.: Sheldon 1039, Sleepy Eye; Ballard 302n, Jor- 
dan, Scott Co.; Kassube 216, Minneapolis; ener 496, Red 
Wing; Saundbera 497, Red Wing. 
XXIX. URTICACEAE. Nettle Family. 
Endlicher, Gen. Pl. 282 (1840); Benth. and Hook., Gen. Pl. III, 343 
(1880)—Tribus VII, Urticeae; Engler in Engler and Prantl, Nat. Pflanz. 3, I, 
98 (1888). 
Genera: 41 living; 5 fossil; tropics and sparingly 
without; to Auckland Island and to 4500 m. in Himalayas and 
Andes. 
Species: 500+; 83 per cent. New World; 383 per cent. 
Asia; 14 per cent. Africa; 14 per cent. Oceanica; 8-4 per 
cent. Europe (Engler). Fossil species, 12-15, Cretaceous and 
Tertiary. 
URTICA Linn. Gen. 710 (17387). 
Baillon, Hist. Pl. III, 517; Benth. and Hook., Gen. Pl. III, 381; Du- 
rand, Ind. Gen. Phan, 377; Engler and Prantl, Nat. Pflanz. 3, I, 104 (Eng- 
ler); Schenck, Palaeophyt. 483. ; 
Living species: 80+; temperate regions. Europe, 6; 
Russia, 5; Russian Europe, 2; N. America, 10+; Canada, 3; 
E. Sts., 2; Pl. King, 1; Pl. Wheel, 4; California, 4. 
Fossil species: Miocene of Steirmack (Hittinghausen). 
