Hosta glauca
 

This is another case where a plant that was originally thought to be a unique species turns out to be a cultivated variety (cultivar). According to The Hostapedia by Mark Zilis (2009), "The name "Hosta glauca" has been used for a variety of plants over the years. It implies that the plant has blue-green foliage. The most likely choices are as follows:

bullet if 9-11 vein pairs = H. 'Fortunei Hyacinthina';
bullet if 16 or more vein pairs and large-sized = H. 'Elegans';
bullet if 16 or more vein pairs and medium to small sized = H. 'Tokudama'."

 
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