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Orchid Digest 75-3

Cypripedium parviflorum var. pubescens.
Cypripedium parviflorum
is extremely variable; in particular, var. pubescens is difficult to delimit. In exposed situations, especially in calcareous soils, plants are low-growing with ascending, often narrow leaves and rather small flowers; in exposed boreal and arctic sites, plants and flowers may be very small with scarcely spiraled to flat petals. Flora of North America http://tinyurl.com/43jjfqg. ©Greg Allikas.

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