United States · June 26, 2003

Cotinus obovatus Raf.

Rhododendron ×bakeri (Lemmon & Mc Kay) Hume

Hamamelis virginiana L.

Morella caroliniensis (Mill.) Small

Amelanchier laevis Wiegand

Kalmia angustifolia L.

Kalmia latifolia L.

Orobanchaceae Rhinanthus crista-galli L.

Cypripedium calceolus L.

Rhododendron calendulaceum (Michx.) Torr.

Vaccinium stamineum L.

Comptonia peregrina (L.) J.M.Coult.

Rhododendron arborescens (Pursh) Torr.