Cypripedium parviflorum var. parviflorum (Small yellow lady’s slipper)

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Cypripedium parviflorum Salisb. var. parviflorum

Small yellow lady’s slipper, yellow lady’s slipper, lesser yellow lady’s slipper

Here are some yellow lady’s slippers. Some botanists believe Cypripedium parviflorum var. parviflorum and C. parviflorum var. pubescens are the same species

	You are here Cypripedium parviflorum var. parviflorum	*Cypripedium parviflorum var. pubescens*
Common Name	small yellow lady’s slipper	small yellow lady’s slipper
Plant	6–16″ (15–40 cm) high, smaller in exposed or cold conditions, or in calcium-bearing soil.	Plants are 8–30″ (20–76 cm) high, but much smaller in exposed or cold conditions, or in calcium-bearing soil. There are one or two flowers on each stem.
Leaves	Egg-shaped, folded lengthwise, 2–6″ (6–15 cm) long and 1–3″ (3–8 cm) wide.	Leaves are 6–8″ (15–20 cm) long and 2½–3½″ (6.3–8.9 cm) wide, elliptical in shape, with roughly parallel veins.
Flowers	The yellow, slipper-like flower is called the lip, and is 1–2½″ (3–7 cm) long and ⅛–1″ (6–30 mm). Petals are dark reddish brown. Although they are densely spotted, the spots are so small that the effect is uniformly dark, vs. blotchy as with other varieties. The flowers may have a rose-like fragrance. Produces one or two flowers per stem.	The slipper-like flower is called the lip, and is yellow, often with purple veins or red dots, 1–2″ (2.9–5.4 cm) long, larger than the other varieties of Cypripedium parviflorum. Three sepals extend from the base of the flower, usually twisted or wavy, greenish-yellow to purple-brown, each up to 3½″ (8.9 cm) long.
Fruit	Capsules are ellipsoidal, hariy, ¾–1 ⨉ ⅛–½″ (2.2–3 cm ⨉ 6–13 mm).	An oblong-elliptic capsule containing numerous tiny seeds.
Range/ Zones
Habitats	Mesic to dry-mesic upland forests, woodlands with deep humus or layers of leaf litter and shaded boggy habitats.	Shady, damp forest understory of mixed deciduous and coniferous forests to open meadows and along streams in acidic soils.

Cypripedium parviflorum var. parviflorum description by Thomas H. Kent, not updated.