=Lady’s Slipper=, generic description, 242; origin and history of name, 58, 242. _See_ Moccasin-Flower and _Cypripedium_ =European Yellow Lady’s Slipper=, first species designated under genus _Cypripedium_ (1740-1753), 53, 242. See _Cypripedium calceolus_ and _Calceolus Marianus_ =Fragrant White Lady’s Slipper=, mention of, 243. See _C. Montanum_ =Large Yellow= or =Downy Yellow Lady’s Slipper=, specific description, 245. See _C. hirsutum_ =Ram’s-Head Lady’s Slipper=, specific description, 42, 243; origin of name, 37; haunts, 39, 40, 41, 43, 80, 99, 100, 103, 104, 167, 174, 206; rarest orchid of North America, 60, 81; Witch Hollow colony, 95, 99, 100; musk-like fragrance of roots, 134; destruction of, by worms, 135, 138. See _C. arietinum_ =Small White= or =Prairie Lady’s Slipper=, specific description, 244. See _C. candidum_ =Small Yellow= or =Fragrant Yellow Lady’s Slipper=, specific description, 246; dates of flowering, 3, 18. See _C. parviflorum_ =Two-Leaved= or =Stemless Pink Lady’s Slipper=, specific description, 246; albinos of, 147, 148, 175; range northward and southward, 247. See _C. acaule_ =White Petaled= or =Showy Lady’s Slipper=, specific description, 244; haunts, 3, 6, 35, 55, 77, 78, 86, 148, 185, 207, 211; dates of flowering, 3, 19, 26, 79; cultivation, 3, 80, 81; albinos, 61, 137, 184; seedlings, 77, 78, 81; ancient colony, 78. See _C. reginæ_ Lady’s-Thumb, 145 =Ladies’ Tresses=, generic description, 263; haunts, 109, 166, 237. See _Gyrostachys_ =Early Broad-Leaved Ladies’ Tresses=, specific description, 264 =Hooded Ladies’ Tresses=, specific description, 264 =Little Simple Ladies’ Tresses=, specific description, 266 =Nodding Ladies’ Tresses=, specific description, 265 =Slender Ladies’ Tresses=, specific description, 266 =Yellow Ladies’ Tresses=, specific description, 265 Lake of Dawn, 12. _See_ Aurora’s Lake Lake Whitney, New Haven (Conn.), 130, 131 Lambkill, 6, 173, 187 Lansingburg (N. Y.), 7 Laurel, American Mountain, 6, 173, 184, 218 Le Moyne, F. F., quoted on seedlings of _C. reginæ_, 81 Leopard’s-Bane, 235 Leopard-Flower, 161 =Leptorchis=, generic description, 274. _See_ Twayblade, Lily-Leaved =L. liliifolia=, specific description, 274; haunts, 109, 162 =L. Loeselii=, specific description, 275 Lichens, origin of names of, 194 Lily Family, 158; leaves of species of, 126; bulbs of, 128 Blackberry Lily, 161 Dog’s-Tooth Lily, 12; origin of name, 127, 128. See _Erythronium Americanum_ _Lilium Philadelphicum_, 210 Wild Lily or Yellow Clintonia, 116, 117 Wildwood Lily, 210 Yellow Pond Lily, 69, 144; origin of name, 83 Lily-of-the-Valley Family, 162, 176