The lip of the flower is shaped like a large, hollow bag, slightly puckered on its infolded margin; the other petals are long, narrow, and twist, or curl, on either side of the bag; the calyx-parts are apparently only 2 (though botanists consider the lower is composed of two parts grown together),--they are placed above, and below the bag. The petal-like pistil is pink; the bag--of a loose texture--is a crude crimson-pink, inclining to violet, veined by many darker lines; the other parts of the flower--of a thin texture and hairy--are colored a dull reddish-brown, tinted with purple. The single flower hangs from the end of the stem. In some localities pure white forms are frequently found, and sometimes a single stem will bear two blossoms placed back to back. A rank odor is observable, if the plant is rudely handled. [Illustration: PINK LADY’S SLIPPER: Cypripedium acaule.] *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. [Illustration: LARGE YELLOW LADY’S SLIPPER: C. pubescens.] *Showy Lady’s Slipper.* _Cypripedium spectabile._ *Whip-poor-will’s Shoes.* Found in bogs and swamps, in July. The leafy stalk, about 2 feet in height, is downy to the touch. Its color is green. The large oval leaf tapers much at the tip, and clasps the stalk at the base; the many ribs are parallel, the margin is wavy, and the surface is roughish. In color it is a full toned yellowish-green. The leaves are alternate in growth. The bag of this flower is large, rounded, and much inflated; it is white and crimson-pink in color, and set about by 4 white petal-like parts. The stamens and large pistil are white, tinged with yellow. From 1 to 3 flowers grow on the summit of the stalk.