The flowers develop into small pea-like pods or legumes.
five leaflets, but with the central three held conspicuously above the others, hence the use of the name trefoil.
The height of the plant is variable, from 5-20 cm, occasionally more where supported by other plants; the stems can reach up to 50 cm long. It is typically sprawling at the height of the surrounding grassland.
The flowers are clustered 1-7 together in the leaf axils, fragrant, with a four-lobed pale yellowish-white 1 cm long corolla.
The leaves are alternate, 4-10 cm long and 2-4 cm wide, entire but with a waved margin they are silvery when they leaf out early in spring due to numerous tiny, scales, but turning greener above as the silvery scales wear off through the summer
4-10 m tall
Because airborne nitrogen can be fixed in its roots, it has the capability to grow in infertile habitats.
The fruit is round to oval drupe 1 cm long, silvery-scaled orange ripening red dotted with silver or brown. When ripe, the fruit is juicy and edible. It is small, extremely numerous, tart-tasting, and it has a chewable seed.
Unlike most other members of Cypripedium, the pouch of C. acaule opens in a slit that runs down the front of the labellum rather than a round opening.
The plant consists of two plicate leaves near the ground.
A long, pubescent stalk bears a single pink flower.
C. acaule grows in a variety of different habitats, including moist and dry soils. It is usually found in pine forests, where it can be seen in large colonies, but it grows in deciduous woods, as well. It is nearly always found in soil with high acid content.
The flowers emerge from a tall, upright stem. Female flowers are maroon in color.
It has green arrowhead-shaped leaves and red-tinted deeply ridged stems, and it sprouts from an aggressive rhizome. The leaves are edible, imparting a pleasing, tart taste, but should not be eaten in large quantities. The tartness is due to the presence of oxalates which are also responsible for its toxicity.
It favors moist soil, so it thrives in floodplains and near marshes
This pink flower consists of two wings cradling a tubular segment which hosts the stamens.
Tint of red around the edge. Leaves are clustered at the top, appearing to be whorled, but they are not. Leaflets are oblong to lanceolate — narrow at the base with a pointed tip. Leaves have an entire margin and are thin