LIST OF ILLUSTRATIONS. 



XXIII. CALOPOGON. Limodorum tuberosum, . ' . . . * * * 60 



XXIV. SNAKE-MOUTH. Pogonia ophioglossoides, .... 61 

 XXV. SMALL PURPLE-FRINGED ORCHIS. Habenaria fsycodes, . . 63 



XXVI. WHITE-FRINGED ORCHIS. Habenaria blephariglottis, . * * * 64 



YELLOW-FRINGED ORCHIS. Habenaria ciliaris . . * * * 64 



XXVII. MARSH CLEMATIS. Clematis cri s pa, 66 



XXVIII. HORNED BLADDERWORT. Utricularia cornuta, ... 68 

 XXIX. ROSE MALLOW. Hibiscus Moscheutos, . . . , * * * 7<3 



XXX. BUCKBEAN. Menyanthes trifoliata, 7I 



XXXI. SEA PINK. Sabbatia campanulata, ..... 73 



XXXII. VENUS'S FLY-TRAP. Dionaa muscipula, . . . * * * 74 



XXXIII. MILKWEED. Asclepias lanceolata, . . . . * * * ?6 

 ASHY MILKWEED. Asclepias cinerea, . . , . * * * ?6 



XXXIV. LARGER BLUE FLAG. Iris versicolor^ . . . . * * * 80 



XXXV. CRESTED DWARF-IRIS. Iris cristata^ . . . . 81 



XXXVI. POINTED BLUE-EYED GRASS. Sisyrinchium angustifolium, * * * 82 

 XXXVII. YELLOW-ADDER'S TONGUE. Erytkronium A mericanum, . * * * 84 



XXXVIII. CAROLINA LILY. Lilium Carolinianum^ . . . * * * 86 



XXXIX. STOUT STENANTHIUM. Stenanthium robustum, ... 85 



XL. FOUR-WINGED SNOWDROP TREE. Mohrodendron Carolinum^ . 87 



XLI. CHOKE CHERRY. Prunus Virginiana, . . . ... 89 



XLII. TALL WILD BELLFLOWER. Campanula Americana, . . * * * 90 



XLIII. COLORADO SHOOTING-STAR. Dodecatheon Meadia frigidum, . 92 



XLIV. TRUMPET FLOWER. Tecoma radicans, . . . * * * 94 



XLV. BUTTON BUSH. Cephalanthus occidentalis, . . . * * * 96 



XLVI. BLUETS. Houstonia caerulea, ...... 99 



XLVII. TALL MEADOW RUE. Thalictrum polygamum, . . . 103 



XLVIII. MONKSHOOD. Aconitum uncinatum, . . . . * * * 104 



XLIX. MOCK APPLE. Micrampelis lobata, . . . . 105 



L. WHITE-FLOWERED SIDALCEA. Sidalcea Candida, ... 107 



LI. CARDINAL MONKEY-FLOWER. Mimulus cardinalis, . . * * * 108 



Lll. TURTLE-HEAD. Chelone glabra, ...... in 



Llll. TURTLE-HEAD. Chelone Lyoni, . .... 113 



LIV HEDGE-HYSSOP. Gratiola aurea, . . . . . 115 



