Hosta longipes var. longipes forma sparsa

Family Agavaceae (also placed in Liliaceae)
Scientific name Hosta longipes (Franchet & Savatier) Matsumura var. longipes forma sparsa (Nakai) W. G. Schmid
Synonyms Hosta longipes (Franchet & Savatier) Matsumura var. lancea Honda; Hosta sparsa Maekawa; Hosta tardiflora (W. Irving) Stearn
Common name (Japanese common name) aki-giboushi (アキギボウシ, 秋擬宝珠 [meaning: Autumn giboushi (giboushi = a traditional metal ornament of bridges)]), hosoba-iwa-giboushi (ホソバイワギボウシ, 細葉岩擬宝珠 [meaning: narrow leaved iwa-giboushi (iwa-giboushi = Hosta longipes)])
(English common name) none
Distribution (Japan) Honshu (Central region)
(Other nations) none
Habitat Mountane wet forest or rocks
Chromosomal number 2n=60
Description Leaves ca. 10-20cm long. Scapes ca. 30-50cm tall. Flowers white or pale purple corollas, flowering in September to Octolber. Perennial plants.
Reference H. longipes var. longipes f. sparsa (Nakai 1930) W.G. Schmid
Note Endemic to Japan.
Photos below are those of a plant which was cultivated by Madame Yukiko Tsuchiya and displayed at the Wild Plants Show 2009 in Jindai Botanical Garden.

October 2009
at Jindai Botanical Garden