Corallorhiza odontorhiza var. odontorhiza has cleistogamous flowers and is therefore suggested to be self-pollinated. The rostellum is barely developed, opposed to other varieties (var. pringlei). This unique morphology allows the pollinia to grow directly into the adjacent stigmatic surface (Freudenstein 1997). The distribution of this variety focusses on the western states of U.S.A. and does not reach Middle-America (POWO 2021).
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