Hosta rectifolia




Family Agavaceae (also placed in Liliaceae)
Scientific name Hosta rectifolia Nakai
Synonyms Hosta albomarginata Fujita; Hosta apoiensis Miyabe and Kudô; Hosta atropurpurea Nakai; Hosta atropurpurea Nakai forma albiflora M. Tatewaki; Hosta rectifolia Nakai forma atropurpurea (Nakai) Nakai ex Maekawa; Hosta rectifolia Nakai subsp. atropurpurea (Nakai) Inagaki and Toyokuni; Hosta rectifolia Nakai var. atropurpurea (Nakai) Tatewaki and S. Kawano; Hosta rectifolia Nakai var. atropurpurea (Nakai) Tatewaki and S. Kawano forma leucantha K. Ito; Hosta rectifolia Nakai var. sachalinensis (Koidzumi) F. Maekawa; Hosta sachalinensis Koidzumi; Hosta sieboldii (Paxton) J. W. Ingram var. rectifolia H. Hara; Hosta sieboldii (Paxton) J. W. Ingram var. rectifolia H. Hara forma albiflora H. Hara; Hosta sieboldii (Paxton) J. W. Ingram var. rectifolia H. Hara forma atropurpurea (Nakai) H. Hara; Hosta sieboldii (Paxton) J. W. Ingram var. rectifolia H. Hara forma leucantha H. Hara
Common name (Japanese common name) tachi-giboushi (タチギボウシ, 立擬宝珠 [standing giboushi (giboushi = a traditional metal ornament of bridges)]), ezo giboushi (エゾギボウシ, 蝦夷擬宝珠 [Ezo giboushi (Ezo = an old name of Hokkaido)]), kurobana-giboushi (クロバナギボウシ, 黒花擬宝珠 [black flower giboushi])
(English common name) none
Distribution (Japan) Hokkaido, Honshu (north of Oze)
(Other nations) Russia (Far East)
Habitat (Hokkaido) swamp; (Honshu) mountane swamp
Chromosomal number 2n=60
Description Leaves 30-40cm long. Scapes electing 50-100cm tall. Flowers blue, purple or white corollas ca. 5cm long, flowering in July to August. Fruits 3-3.5cm long. Perennial plants.
Reference Hosta rectifolia Nakai
The H. rectfolia Complex [PDF]
H. rectifolia var. rectifolia f. pruinosa [PDF]



July 2008
at Hokkaido University
Botanical Garden
July 2008
at Hokkaido University
Botanical Garden
July 2008
at Hokkaido University
Botanical Garden



July 2008
at Hokkaido University
Botanical Garden
July 2008
at Hokkaido University
Botanical Garden
July 2008
at Hokkaido University
Botanical Garden