282 METASPERMAE OF THE MINNESOTA VALLEY. 
Wats. and Coult., Gray’s Man. 6 ed. 153; Britt., Fl. N. J. 92; Webb., 
Fl. Neb. 129; Chap., Fl. S. St. 120; Upham, Fl. Mino. 48; Brew. and Wats., 
Fl. Calif. I, 171: Herd., Fl. Eur. Russ. 46; Coult, Fl. Colo. 78; Mac., Fl. 
Can. I, 127; Wats., Bibl. Ind. I, 289; Wats., King Exp. 80; Roth., Wheel. 
Exp. 110; Cov., Fl. Ark. 179; Engl. Focke, Nat. Pflanz. 3, III, 14. 
North America: Q., Ont. to Man. and Saskatchewan; 
W. to Vancouver in var.; N. England to Fla.; W. to Minn., 
Kan., Colo., Neb,, Ark., Calif. to Brit. Col. 
Minn. valley: Forest district, especially N. E.; prob- 
ably also far N. W.; rocky banks and edges of sloughs. 
Hers.: Kassube 64, Minneapolis; Sandberg 155, Good- 
hue Co.; Oestlund 39, Minneapolis; Herrick 86, Minneapolis; 
Sandberg 156, Cannon Falls. 
SPIRAEA Linn. Gen. 409 (17387). 
Petrophytum Nutr. ex B. and W. FI. Calif. I, 170 (1880). 
Baillon, Hist. Pl. I, 469; Benth. and Hook., Gen. Pl. I, 611; Durand, 
Ind. Gen. Phan. 112; Engler and Prantl, Nat. Pflanz. 3, III, 14; Schenck, 
Palaeophyt. 674. 
Living species: 40+; temperate Northern hemisphere 
and a few in mts. under the tropics. Russia, 16; Europe, 11; 
North America, 4-5; Mexico, 1; E. Sts., 3; Rocky mts., 3; W. 
coast region, 8; Oregon and Canada, 3. 
Fossil species: Several described. Oeningen, Tertiary 1 
sp. (Heer); Alaska, 2-8 (Heer); Leoben (Httinghausen). 
Spiraea tomentosa Linn. Spec. 489 (1753). 
S. ferruginea, glomerata, rosea RAF. N. FI. III, 62, 63 (1836). 
Wats. and Coult., Gray’s Man. 6 ed. 153; Britt., Fl. N. J. 93; Upham, 
Fl. Minn. 48; Chap., Fl. S. St. 120; Mac., Fl. Can. I, 126; Cov., Fl. Ark. 179; 
Engl. Focke, Nat. Pflanz. 3, III, 15; Wats., Bibl. Ind. I, 322. 
North America: N.S8., N. Br., Q., Ont. to N. Eng., N. 
J. and Ga.; W. to Minn., Kan. and Ark. 
Minn. valley: Ft. Snelling and far N. E. in Dakota 
Co.; edges of sloughs and forest marshes. 
HERB.: Sandberg 159, Chisago Co. 
Spiraea salicifolia Linn. Spec, £89 (1753). 
S. tomentosa var. alba MArsH. Arbust. Amer. 147 (1785). 
S. carpinifolia WILLD. Enum. 540 (1809). 
S. amoena, ciliata, obovata Rar. N. FI. III, 64-66 (1836). 
Wats. and Coult., Gray’s Man. 6 ed. 153; Britt., Fl. N. J. 93; Wats., 
Bibl. Ind. I, 322; Upham, Fl. Minn. 48; Chap., Fl. 8. St. 121; Trautv., 
Fl. Sib, 48; Hook., Fl. Gt. Brit. 116; Mac., Fl. Can. I, 126; Forbes and 
Hems., Fl. Sin. 227; Led., F!. Ross. II, 15; Nym., Fl. Eur.; Herd., Fl. Eur. 
Russ. 46; Engl. Focke, Nat. Pflanz. 3, III, 15; Hart., Fl. Scand. I, 292; 
Rothr., Alask. 445. 
