LIST OF SPECIES. 239 



ORCHID FAMILY 



ORCHIDACE^E 



Pogonia Pogonia ophioglossoides 



Ladies* Tresses Spiranthes cernua 



Large Purple Fringed Orchis Habenaria fimbriata 



Ram's-Head Lady's-slipper Cypripedium arietinum 



Small Yellow Lady's-slipper Cypripedium parviflorum 



Large Yellow Lady's-slipper Cypripedium pubescens 



Showy Lady's-slipper Cypripedium spectabile 



Pink Lady's-slipper Cypripedium acaule 



IRIS FAMILY 



IRIDACE^E 



Larger Blue Flag Iris versicolor 



Blue-Eyed Grass Sisyrinchium angustifolium 



LILY FAMILY 



LILIACEjE 



Large-flowered Bellwort Uvularia grandiflora 



Perfoliate Bellwort Uvularia perfoliata 



Sessile-leaved Bellwort Oakesia sessilifolia 



Tiger Lily Lilium tigrinum 



Philadelphia Lily Lilium Philadelphicum 



Southern Red Lily Lilium Catesbsei 



Canada Lily Lilium Canadense 



Turks-cap Lily Lilium superbum 



Carolina Lily Lilium Carolinianum 



Dog's-tooth Violet Erythronium Americanum 



White Adder's Tongue Erythronium albidum 



LILY-OF-THE-VALLEY FAMILY 



CONVALLARIACE^E 



Asparagus Asparagus officinalis 



Yellow Clintonia Clintonia borealis 



White Clintonia Clintonia umbellata 



