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Isotria Rafinesque. Common name: Whorled Pogonia, Five-leaves, Fiveleaf Orchid.

Key to Isotria

A genus of 2 species, of e. North America. Cameron & Chase (1999) indicate that Isotria should perhaps be included in a more broadly circumscribed Pogonia (as was often done prior to 1922); Chase et al. (2015) retain it as a separate genus.

ID notes: Sterile Isotria is sometimes confused with Medeola. Medeola has a wiry stem, with floccose hairiness, at least toward the base. Isotria has a fleshier stem, lacking hairs.

References: Correll (1950); Mehrhoff & Homoya (2002) In Flora of North America Editorial Committee (2002a). Show full citations.

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Hover over a shape, letter, icon, or arrow on the map for definition or see the legend. Data for arrows not developed for genera and families which may have species only occurring outside the flora area.

image of plant© Keith Bradley | Isotria verticillata | Original Image ⭷
image of plant© J. Kevin England, all rights reserved, uploaded by J. Kevin England | Isotria verticillata source | Original Image ⭷
image of plant© Jim Fowler | Isotria medeoloides | Original Image ⭷
image of plant© Michelle W. （鍾偉瑋）, some rights reserved (CC BY), uploaded by Michelle W. （鍾偉瑋） | Isotria verticillata source | Original Image ⭷
image of plant© Richard & Teresa Ware | Isotria verticillata CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Nate Hartley, some rights reserved (CC BY-NC), uploaded by Nate Hartley | Isotria verticillata source | Original Image ⭷
image of plant© Tomás Curtis, some rights reserved (CC BY-NC), uploaded by Tomás Curtis | Isotria verticillata source | Original Image ⭷

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