Wild Orchid stamps - US Postal Service [Explored 2… Cypripedium acaule (Pink Lady's-slipper orchid) Cypripedium acaule (Pink Lady's-slipper orchid) Cypripedium acaule (Pink Lady's-slipper orchid) Cypripedium acaule (Pink Lady's-slipper orchid) Cypripedium acaule (Pink Lady's-slipper orchid) Cypripedium acaule (Pink Lady's-slipper orchid) Cypripedium acaule (Pink Lady's-slipper orchid) Cypripedium acaule (Pink Lady's-slipper orchid) Cypripedium acaule (Pink Lady's-slipper orchid) Cypripedium acaule (Pink Lady's-slipper orchid) Cypripedium acaule (Pink Lady's-slipper orchid) Cypripedium acaule (Pink Lady's-slipper orchid) Cypripedium acaule (Pink Lady's-slipper orchid) Cypripedium acaule (Pink Lady's-slipper orchid) Cypripedium acaule (Pink Lady's-slipper orchid) Aplectrum hyemale (Puttyroot orchid) Aplectrum hyemale (Puttyroot orchid) Aplectrum hyemale (Puttyroot orchid) Aplectrum hyemale (Puttyroot orchid) in bud Aplectrum hyemale (Puttyroot orchid) Aplectrum hyemale (Puttyroot orchid) in bud Aplectrum hyemale (Puttyroot orchid) in bud Spiranthes odorata (Fragrant Ladies'-tresses orchi… Spiranthes odorata (Fragrant Ladies'-tresses orchi… Spiranthes odorata (Fragrant Ladies'-tresses orchi… Spiranthes odorata (Fragrant Ladies'-tresses orchi… Spiranthes odorata (Fragrant Ladies'-tresses orchi… Spiranthes odorata (Fragrant Ladies'-tresses orchi… Spiranthes odorata (Fragrant Ladies'-tresses orchi… Spiranthes odorata (Fragrant Ladies'-tresses orchi… Spiranthes odorata (Fragrant Ladies'-tresses orchi… Spiranthes odorata (Fragrant Ladies'-tresses orchi… Spiranthes odorata (Fragrant Ladies'-tresses orchi… Spiranthes odorata (Fragrant Ladies'-tresses orchi… Spiranthes odorata (Fragrant Ladies'-tresses orchi… Spiranthes odorata (Fragrant Ladies'-tresses orchi… Spiranthes longilabris (Long-lip Ladies'-tresses o… Spiranthes cernua (Nodding Ladies'-tresses orchid) Spiranthes odorata (Fragrant Ladies'-tresses orchi… Spiranthes odorata (Fragrant Ladies'-tresses orchi… Spiranthes odorata (Fragrant Ladies'-tresses orchi… Spiranthes odorata (Fragrant Ladies'-tresses orchi… Spiranthes odorata (Fragrant Ladies'-tresses orchi… Spiranthes odorata (Fragrant Ladies'-tresses orchi…