Species: Cypripedium parviflorum
Encyclopedia of Puget Sound
Small Yellow Lady's-slipper is a perennial with leafy stems 15-40 cm tall, which arise from short rhizomes. The elliptic leaves are 6-7 cm long and sheath the stem; foliage is lightly pubescent and usually glandular. The 1-2 yellow flowers are subtended by an erect leafy bract, which is often longer than the inflorescence. The narrow sepals reach up to 4 cm long, and are wavy-margined or slightly twisted. One petal is strongly pouch-shaped and often purple-dotted; the other 2 petals are united into one that is similar to the sepals but slightly longer. The fruit is an elliptic capsule bearing thousands of tiny seeds.
Source: Encyclopedia of Life
Classification
Monocotyledoneae
Orchidales
Orchidaceae
Cypripedium
NatureServe
Classification
Ecology and Life History
Small Yellow Lady's-slipper is a perennial with leafy stems 15-40 cm tall, which arise from short rhizomes. The elliptic leaves are 6-7 cm long and sheath the stem; foliage is lightly pubescent and usually glandular. The 1-2 yellow flowers are subtended by an erect leafy bract, which is often longer than the inflorescence. The narrow sepals reach up to 4 cm long, and are wavy-margined or slightly twisted. One petal is strongly pouch-shaped and often purple-dotted; the other 2 petals are united into one that is similar to the sepals but slightly longer. The fruit is an elliptic capsule bearing thousands of tiny seeds.
Source: Encyclopedia of Life

