A new variety of Hosta (Liliaceae): Hosta clausa var. geumgangensis M. Kim & H. Jo

A new variety, Hosta clausa Nakai var. geumgangensis M. Kim & H. Jo, was found in Geumgang River in Korea. This variety shares several characteristics (rhizomes with underground stolon, smooth scape and purple-colored anthers) with the reólated varieties H. clausa Nakai var. clausa and H. clausa var. normalis F. Maekawa. However, H. clausa var. normalis has open flowers, capsules with seeds, purple-spotted petioles, long pistils, and long narrow perianth tubes, whereas this new variety has open flowers, seedless capsules, green-col- ored petioles, short pistils, and short narrow perianth tubes. Hosta clausa Nakai var. clausa has closed flowers and seedless capsules.