*344. Hieracium albiflorum, Hook. 345. Hieracium scabrum, Mx. 1873. July. Pembina. 346. Hieracium Scouleri, Hook. 1874. August. Near Rocky Mountains. *347. Hieracium triste, Willd. *348. Hieracium venosum, 349. Nabalus albus, Hook. L. 1873. August. Mouse River Plain. *350. Nabalus Boottii, DC. 351. Nabalus racemosus, Hook. 1873. September. Along Mouse River. 352. Lygodesmia juncea, Don. 1873. September. Mouse River. Abundant westward. 1874. July, August. Along Missouri and Milk Rivers. *353. Crepis elegans, Hook. *354. Macrorhynchus glaucus, Torr. 355. Macrorhynchus troximoides, T. & G. 1873. July. Pembina. *356. Taraxacum Dens-leonis, Desf. *357. Lactuca elongata, Muhl. *358. Mulgedium acuminatum, DC. *359. Mulgedium leucophæum, DC. 360. Mulgedium pulchellum, Nutt. 1873. August. Mouse River Plain. 1874. July, August. Along Missouri and Milk Rivers. *361. Lobelia Kalmii, L. 362. Lobelia spicata, Lam. LOBELIACEÆ. 1873. August. Second prairie. CAMPANULACEÆ. *363. Campanula aparinoides, Pursh. 364. Campanula rotundifolia, L., var. linifolia. 1873. July. Pembina. Everywhere on the prairie. 1874. July. Frenchman's Creek. ERICACEE. *365. Vaccinium myrtilloides, Hook. 366. Arctostaphylos Uva-ursi, Spring. 1874. July, August. Base of Rocky Mountains. *367. Gaultheria procumbens, L. 368. Cassandra calyculata, L. 369. Andromeda polifolia, L. *370. Menziesia glanduliflora, Hook. *371. Menziesia Grahami, Hook. *372. Ledum latifolium, Ait. PLANTAGINACEE. 379. Plantago eriopoda, Torr. 1874. July. Dry prairie. Missouri River. 380. Plantago Patagonica, Jacq. 1874. July. Missouri River. 381. Plantago Patagonica, var. With preceding. *382. Plantago major, L. #383. Plantago Bigelovii, Gray. PRIMULACE. *384. Androsace occidentalis, Pursh. 388. Lysimachia ciliata, L. 1873. July, August. Pembina and westward, on the borders of thickets. 1874. July, August. Frenchman's Creek to Rocky Mountains. *389. Lysimachia thyrsifolia, L. *390. Trientalis Americana, Pursh. LENTIBULACEE. 391. Utricularia vulgaris, L. 1874. August. Frenchman's Creek. Swamp. *392. Chelone glabra, L. SCROPHULARIACEE. *393. Pentstemon acuminatus, Doug. *394. Pentstemon confertus, Doug. *395. Pentstemon dasyphyllus. 396. Pentstemon gracilis, Nutt. 1873. August. Dry prairie. *397. Pentstemon glaucus, Grah. *399. Pentstemon procerus, Doug. *400. Pentstemon pubescens, Soland. 401. Mimulus luteus, L. 1874. August. Milk River. *404. Gratiola Virginiana, L. *406. Veronica alpina, L. *407. Veronica peregrina, L. 1874. August. Base of Rocky Mountains. 410. Castilleia pallida, Kunth., var. miniata. 1874. August. Milk River. *411. Castilleia sessiliflora, Ph. 1874. July. Near Three Buttes. VERBENACEÆ. 417. Verbena bracteosa, Mx. 1874. July. Frenchman's Creek. *418. Verbena hastata, L. LABIATE. 419. Mentha Canadensis, L. 1873. August. Along Mouse River. *420. Lycopus sinuatus, Gray. 422. Monarda fistulosa, L. 1873. August. Turtle Mountain. 422a. Monarda fistulosa, var. mollis. 1874. August. Frenchman's Creek. 423. Lophanthus anisatus, Benth. 1873. August. Near Turtle Mountain. 424. Dracocephalum parviflorum, Nutt. 1873. August. Turtle Mountain. *425. Physostegia Virgiana, Benth. *426. Brunella vulgaris, L. *427. Scutellaria galericulata, L. *428. Galeopsis Tetrahit, L. 429. Stachys aspera, Mx. 1873. July. Pembina. 430. Stachys palustris, L. 1874. July. Missouri River and Frenchman's Creek. BORRAGINACEÆ. *431. Onosmodium Virginianum, DC. 432. Lithospermum canescens, Lehm. 1873. July. Pembina. Dry plains. 433. Lithospermum longiflorum, Spreng. *434. Mertensia paniculata, Don. 435. Eritrichium Californicum, DC. 1874. July. Frenchman's Creek. 436. Eritrichium crassisepalum, T. & G. 1874. August. Dry plains. Base of Rocky Mountains. 437. Eritrichium leucophæum, DC. 1874. August. Base of Rocky Mountains. *438. Eritrichium glomeratum, DC. *439. Myosotis alpestris, Schmidt. *440. Echinospermum floribundum, Lehm. *441. Echinospermum Lappula, Lehm. *442. Echinospermum patulum, Lehm. 443. Cynoglossum Virginicum, L. 1873. July, August. Pembina and westward. POLEMONIACEÆ. 444. Phlox Douglassii, Hook. 1874. July. Near Three Buttes. *445. Phlox canescens, T. & G. *446. Phlox pilosa, L. 447. Collomia linearis, Nutt. 1874. July. Dry prairies, Missouri River. 448. Gilia minima, Gr. 1874. July. Near Three Buttes. CONVOLVULACEE. 449. Calystegia sepium, R. Br. 1873. July. Pembina. 1874. July. Missouri River. 450. Calystegia spithamaa, Pursh. 1873. July. Pembina, in woods. 1874. July. Missouri River. 451. Cuscuta Gronovii, Willd. 1873. August. Turtle Mountain. On Ribes rotundifolium. SOLANACEÆ. *452. Physalis viscosa, L. 453. Solanum rostratum, Dunal. 1874. July. Frenchman's Creek. 454. Solanum triflorum, Nutt. 1874. July. Prairies, Frenchman's Creek. GENTIANACEÆ. *455. Halenia deflexa, Griseb. 456. Gentiana affinis, Griseb. 1874. August. Milk River. 457. Gentiana Amarella, L. 1874. August. Rocky Mountains. *458. Gentiana acuta, Mx. *459. Gentiana Andrewsii, Griseb. *#460. Gentiana crinita, Froel. *461. Gentiana detonsa, Fries. *462. Gentiana Menziesii, Griseb. 463. Gentiana puberula, Mx. 1873. September. Mouse River. APOCYNACEÆ. 464. Apocynum androsamifolium, L. 1873. July. Pembina, in thickets. 465. Аросупum cannabinum, IL. 1873. July. Very abundant in thickets. The fibre used by the Indians for cordage. It may eventually have some economic value. 1874. July. Missouri River. ASCLEPIADACEE. 466. Asclepias ovalifolia, Dec. 1873. July. Pembina, in woods. 467. Asclepias speciosa, Torr. 1873. August. Plains near Turtle Mountain. 1874. July. Wet places along Frenchman's Creek. 468. Asclepias verticillata, L. 1873. July. Pembina. *469. Asclepias incarnata, L. *470. Asclepias variegata, L., var. minor, Hook. *471. Asclepias viridiflora, Ell. ARISTOLOCHIACEÆ. *472. Asarum Canadense, L. |