LIST OF ILLUSTRATIONS. 



XXIII. CALOPOGON. Litnodorum tuberosum, . 



XXIV. SNAKE-MOUTH. Pogonia ofihioglossoides, 

 XXV. SMALL PURPLE-FRINGED ORCHIS. Habenaria psycodes, 



XXVI. WHITE-FRINGED ORCHIS. Habenaria blephariglottis^ 

 YELLOW-FRINGED ORCHIS. Habenaria ciliaris 



XXVII. MARSH CLEMATIS. Clematis crispa, 



XXVIII. HORNED BLADDERWORT. Utricularia cornuta, 

 XXIX. ROSE MALLOW. Hibiscus Moscheutos, . 



XXX. BUCKBEAN. Menyanthes trifoliata, 



XXXI. SEA PINK. Sabbatia campanulata, . . 



XXXII. VENUS'S FLY-TRAP. Diortiea muscipula, 



XXXIII. MILKWEED. Asclepias lanceolata, 

 ASHY MILKWEED. Asclepias cinerea, 



XXXIV. LARGER BLUE FLAG. Iris versicolor, 



XXXV. CRESTED DWARF-IRIS. Iris cristata, 



XXXVI. POINTED BLUE-EYED GRASS. Sisyrinchium angusti folium, 

 XXXVII. YELLOW-ADDER'S TONGUE. Erythronium Americanum, 



XXXVIll. CAROLINA LILY. Lilium Carolinianum, 



XXXIX, STOUT STENANTHIUM. Stenanthium robustum, 



XL. FOUR-WINGED SNOWDROP TREE. Mohrodendron Carolinum, 



XLI. CHOKE CHERRY. Prunus Virginiana, . 



XL!!. TALL WILD BELLFLOWER. Campanula Americana, 



XLIII. COLORADO SHOOTING-STAR. Dodecatheon Meadia frigidu 



XLIV. TRUMPET FLOWER. Tecoma radicans, . 



XLV. BUTTON'BUSH. Cephalanthus occidentalis, 



XLVI. BLUETS. Houstonia coerulea, .... 



XLVll. TALL MEADOW RUE. Thalictrum polygamum, 



XLVlll. MONKSHOOD. Aconitum uncinatum, 



XLIX. MOCK APPLE- Micrampelis lobata, 



L. WHITE-FLOWERED SIDALCEA. Sidalcea Candida, 



Li. CARDINAL MONKEY-FLOWER. Mimulus cardinalis, . 

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



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



LIV HEDGE-HYSSOP. Gratiola aurea. 



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