56 Pyrola asarifolia Michx. _Liver-Leaf Wintergreen_ 208
56 Pyrola uliginosa Torr. _Bog Wintergreen_ 208
56 Moneses uniflora (L.) A. Gray. _One-Flowered Wintergreen_ 208
57 Chimaphila umbellata (L.) Nutt. _Prince’s Pine_ 210
57 Arctostaphylos uva-ursi (L.) Spreng. _Bear-Berry_ 210
58 Oxycoccus oxycoccus (L.) MacM. _Small Cranberry_ 212
58 Gaultheria ovatifolia A. Gray. _Ovate-Leaved Wintergreen_ 212
58 Vitis-idæa Vitis-idæa (L.) Britton. _Mountain Cranberry_ 212
59 Cassiope Mertensiana (Bong.) Don. _White Heath_ 216
59 Phyllodoce empetriformis (Smith) Don. _Red False-Heather_ 216
59 Phyllodoce glanduliflora (Hook.) Rydb. _White False-Heather_ 216
60 Ledum grœnlandicum Œder. _Labrador Tea_ 218
60 Azaleastrum albiflorum (Hook.) Rydb.
_White Mountain Rhododendron_ 218
61 Menziesia ferruginea Smith. _Smooth Menziesea_ 220
61 Kalmia microphylla (Hook.) Heller. _Dwarf Swamp-Laurel_ 220
62 Vaccinium erythrococcum Rydb. _Alpine Bilberry_ 222
62 Vaccinium globulare Rydb. _Thin-Leaved Bilberry_ 222
62 Vaccinium ovalifolium Smith. _Blueberry_ 222
63 Primula Maccalliana Wiegand. _Maccalla’s Primrose_ 228
63 Androsace carinata Torr. _Sweet Androsace_ 228
64 Trientalis arctica Fisch. _Arctic Star-Flower_ 230
64 Dodecatheon conjugens Greene. _Shooting-Star_ 230
65 Gentiana affinis Griseb. _Large Gentian_ 234
65 Romanzoffia sitchensis Bong. _Romanzoffia_ 234
66 Phacelia sericea (Graham) A. Gray. _Mountain Phacelia_ 238
66 Phacelia heterophylla Pursh _Phacelia heterophylla_ 238
67 Lappula floribunda (Lehm.) Greene. _False Forget-me-not_ 242
67 Lithospermum linearifolium Goldie. _Narrow-Leaved Puccoon_ 242
68 Collinsia parviflora Dougl. _Small-Flowered Collinsia_ 248
68 Elephantella grœnlandica (Retz.) Rydb.
_Long-Beaked Elephantella_ 248
69 Pentstemon confertus Dougl. _Yellow Beard-Tongue_ 250
69 Pentstemon pseudohumilis Rydb. _Pentstemon pseudohumilis_ 250
70 Pentstemon fruticosus (Pursh) Greene.
_Large Purple Beard-Tongue_ 262
70 Pinguicula vulgaris L. _Butterwort_ 262
71 Linnæa americana Forbes. _American Twin-Flower_ 266
71 Lonicera ebractulata Rydb. _Fly Honeysuckle_ 266
72 Lonicera involucrata (Rich.) Banks.
_Involucred Fly Honeysuckle_ 270
73 Valeriana sitchensis Bong. _Wild Heliotrope_ 272
73 Lobelia Kalmii strictiflora Rydb. _Brook Lobelia_ 272
74 Hieracium umbellatum L. _Narrow-Leaved Hawk-weed_ 276
74 Agoseris aurantiaca (Hook.) Greene. _Agoseris aurantiaca_ 276
75 Erigeron acris L. _Blue Fleabane_ 288
75 Erigeron salsuginosus (Rich.) A. Gray.
_Large Purple Fleabane_ 288
75 Saussurea densa Hook. _Saussurea_ 288
76 Erigeron discoideus Rydb. _Cut-Leaved Fleabane_ 292
76 Erigeron melanocephalus A. Nelson. _Black-Headed Fleabane_ 292
76 Erigeron multifidus Rydb. _Cut-Leaved Fleabane_ 292