Large Yellow Lady’s Slipper.Cypripedium pubescens.Yellow Moccason Flower.
Found in May, about a week later than the Pink Lady’s Slipper, among low growths in moist shade.
The single stalk grows from 1 to 2 feet; it is erect, or slightly bent aside, leafy, strong-fibred, and roughened by minute hairs. Color, green.
The leaf is a broad oval, with a sharp tip, many parallel ribs, of a loose-fibred texture, and hairy on the upper surface. Color, strong green. It clasps the stalk, and folds about it. Two or three or more leaves are placed alternately along the stalk; they diminish gradually in size.
The Yellow Lady’s Slipper’s rounded pouch, or bag, has a circular opening at the top, and is thick in texture, with a smooth and shining surface. The long and narrow side petals are much twisted, and curled; the two calyx-parts are broad-oval, the lower 2-cleft; they are ribbed, with slightly wavy margins. All these parts are thin and downy, and colored dull red, or brownish, or purplish, streaked with green; the pouch is bright yellow, streaked with dull red parallel veins. The flower is set, with an outward swinging gesture, on the tip of the stalk, which is enlarged just beneath the point of contact.
The blossom is faintly odorous.