=rectifolia var. rectifolia.
JN: Tachi Giboshi = "upright hosta".
Remarkable for its upright habit and the purple flowers, often on very long scapes.
Because of these characteristics, H. rectifolia has been used a lot in breeding.
Oval, lanceolate green leaves and very long-flowering stems to 3', with somewhat pendulous cobalt-violet flowers in July and August. A handsome deep green addition to the woodland. Japan, Sachalin.
According to Barry Yinger, this species has a cult following in Japan. Avid sport hunters have found hundreds of sports in the wild.
Matt dark green; oval, slightly concave; very tall (3') scapes