TABLE OP CONTENTS. 



Vll 



LXIV. Aceraceae 351 



J,XV. Balsaminaceae 354 



LXVI. Rhamnaceae 355 



LXVII. Yitaceae 357 



L.X VIII. TiJiaceae 359 



LXIX. Malvaceae 360 



LXX. Hypericaceae 362 



LXXI. Cistaceae 364 



L.XXII. Violaceae 365 



LXXIII. Cactaceae 371 



LXXIV. Thymelaeaceae 372 



L.XX V. Elaeagnaceae 373 



L.XXVI. Lythraceae 374 



LXXVII. Oenotheraceae 375 



LXXVIII. Halorrhagidaceae 383 



LXXIX. Araliaceae 385 



LXXX. Umbelliferae 387 



L.XXXL Cornaceae 369 



DicotyledonesMetachlamydeae 402 



KXXXII Pirolaceae 402 



L.XXXIII. Ericaceae 405 



LXXXIV. Primulaceae 411 



L.XXXV. Oleaceae 415 



L.XXXVI. Gentianaceae 417 



LXXXVII. Apocynaceae 421 



L.XXXVIII. Asclepiadaceae 422 



L.XXXIX. Convolvulaceae 427 



XC . Polemoniaceae 431 



XCI. Hydrophyllaceae 434 



XCII. Borraginaceae 436 



XCI1I. Verbenaceae 442 



XCIV. Labiatae 444 



XCV. Solanaceae 456 



XCVI. Scrophulariaceae 459 



XCVJI. Lentibulariaceae 473 



XCVIII. Orobanchaceae 475 



XCIX. Plantaginaceae 476 



C. Rubiaceae 478 



CI. Caprifoliaceae 482 



Oil. Adoxaceae 490 



CHI. Valerianaceae .' 491 



CIV. Cucurbitaceae 493 



C V. Campanulaceae 494 



CVI. Compositae 499 



Summary 570 



THE VALLEY OF THE MINNESOTA RIVEK 571 



Location of the valley 571 



General topographical features 572 



Character of the basin 573 



Distribution of forest and prairie 574 



Soils.. 575 



