Tuesday, July 27, 2010

Kostiuk's Hybrid Calypso

There are two American varieties of Calypso bulbosa, the Fairy Slipper, var. americana, the Eastern Fairy Slipper, and var. occidentalis, the Western Fairy Slipper.  The names are a bit misleading, since the Western Fairy Slipper is found only in the far west, and the Eastern Fairy Slipper is found across the United States and Canada with the exception of the Pacific Northwest coast.  There is a rare hybrid of these two varieties, Kostiuk's Hybrid Calypso, Calypso bulbosa x kostiukiae, found where the ranges of the two varieties overlap.  We've found this hybrid in eastern Washington.

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