Dig deeper at SERNEC, a consortium of southeastern herbaria.
Spermatophytes (seed plants): Angiosperms (flowering plants): Monocots: Asparagales
Gray's Manual of Botany (Fernald, 1950)
Manual of the Southeastern Flora (Small, 1933)
Large Purple Fringed Orchid, Plume-royal
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Ben Geer Keys bgk2278_a
A squarish to roundish (never dumbbell-shaped) opening at lip base, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.
Harry Davis hld2278_crw_7011
July Buncombe County NC
Blue Ridge Parkway
Lip petal divided into 3 flared deeply-fringed lobes, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.
Steve Marlow snm070702d101_008
July Pocahontas County WV
Cranberry Glades Botanical Area
Leaves alternate, lanceolate, keeled, to 8" long, sheathing the lower stem, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.