Hosta nakaiana

Hosta nakaiana (F. Maekawa 1935/AHS 1993)

Subgenus Schmid Bryocles Zonneveld  
Section Schmid Lamellatae Zonneveld  
Hosta Library species file Hosta nakaiana
Origin Japan, Nagasaki Prefecture, Ehme Prefecture, Tokughima Prefecture, Mie Prefecture.  See Map.
Habitat Widely spread in the southern part of Japan.
Japanese name Kanzashi Giboshi = ornamental hairpin hosta.
Plant 16–22 cm diameter, 12 cm high (6–9 x 5 "), dome-shaped.
Leaf Petiole 9–10 cm (2–4"), ascending in an arch, slender, narrowly open.
Leaf 6–9 x 3.5–6 cm (2.5–3.5 x 1.5–2.5"), ovate-cordate, very truncate at the base, transition usually very contracted, recurving, acuminate tip, interior leaf flattish, margin undulate, wavy, not pruinose, surface with metallic sheen, shiny below, dark green above, lighter green below, opaque.
4–7 pairs of veins, very thin, not much sunken above, smooth below.
Inflorescense Scape 40–50 cm (16–20 "), distinct lamellar ridges parallel or slightly spiral to scape axis, straight, erect, usually perpendicular, but sometimes bending.
Fertile and sterile bracts navicular, grooved, thick, green, ascending, imbricated even during flowering and nearly equal in size, persisting at anthesis but withering soon after; developed unopened flower head globular, capitate.
Raceme 12 cm (8 ") 6–15 flowers.
Flowers 4.5–5 cm long, 2.5 cm broad (2 x 1), closely spaced on expanded raceme, held erect in ±horizontal position on strong pedicels, dark veins on a lighter colored background, perianth pale purple-violet, with white markings, expanding, in the central part dilated, bell-shaped, lobes ±angled to the axis, stamens exerted.
Anthers purple.
Seed pods dark green, sometimes purple.
Blooming Time July
Fertility Fertile
Growing conditions  
Suitable for containers  
Special remarks Closely related to H. capitata
In Hosta Mill Collection Yes
Sports
  • H. 'Duchess' (R. P. Savory 1982) = H. (x nakaiana) sport
  • H. 'Sweetheart' (Armstrong/Ruh) = H. nakaiana sport or hybrid
Progeny H. nakaiana seems to have fallen out of grace the last decade, but a large number of hybrids with either H. nakaiana or H. nakaiana hybrids as a parent have been registered.

Listed below is the direct progeny.

  • H. 'Allan P. McConnell' (McConnell/M. Seaver 1980) = H. nakaiana hybrid
  • H. 'Apple Green' (Ken Anderson 1982) = H. nakaiana seedling
  • H. 'Bacchanal' (Leroy Davidson/P. Ruh 1991) = H. nakaiana seedling
  • H. 'Betty' (R. H. Benedict 1983) = H. nakaiana x H. ventricosa
  • H. 'Big Hearted' (R. H. Benedict 1983) = H. nakaiana x H. 'Zager's Giant'
  • H. 'Big (?) Blue Boy' (D. Stone / AHS 1986) = H. nakaiana x H. sieboldiana
  • H. 'Birchwood Gem' (F. Shaw/P. Ruh 1989) = H. nakaiana hybrid?
  • H. 'Blue Boy' (D. Stone/AHS 1986) = H. nakaiana x H. sieboldiana
  • H. 'Bountiful' (E. V. Fisher 1971) = H. nakaiana hybrid
  • H. 'Candy Hearts' (E. V. Fisher 1971/P. Ruh 1998) = H. nakaiana hybrid
  • H. 'Cotillion' (William W. Zumbar 1995) = H. (x 'Breeders Choice') x H. (nakaiana x H. 'Kii Hime')
  • H. 'Dear Heart' (E. Minks 1975) = H. nakaiana x H. 'Blue Boy'
  • H. 'Dick's Delight' (R. Rossing 1998) = H. nakaiana hybrid
  • H. 'Dixie Queen' (R. P. Savory 1982) = H. nakaiana hybrid
  • H. 'Drummer Boy' (S. Moldovan 1983) = H. nakaiana x H. 'Ruffled Queen'
  • H. 'Egret' (R. P. Savory 1984) = H. nakaiana hybrid
  • H. 'Floradora' (P. Aden 1978) = H. nakaiana x H. longipes dwarf seedling
  • H. 'Fond Hope' (E. V. Fisher 1973) = H. nakaiana hybrid
  • H. 'Goldbrook Genie' (S. Bond 1989) = H. nakaiana hybrid
  • H. 'Golden Jubilee' (R. P. Savory/Savory Gardens 1995) = H. (x nakaiana) hybrid
  • H. 'Golden Surprise' (Lucy Simpers/P. Ruh 1991) = H. nakaiana hybrid
  • H. 'Golden Tiara' (R. P. Savory 1977) = H. nakaiana seedling
  • H. 'Happy Hearts' (E. V. Fisher 1973) = H. nakaiana hybrid
  • H. 'Heartleaf' (E. V. Fisher 1971) = H. nakaiana hybrid
  • H. 'Holly's Hybrid' (G. Holly/E. V. Fisher/P. Ruh 2002) = H. nakaiana x (unknown)
  • H. 'Kilowatt' (M. R. Armstrong 1970) = H. nakaiana hybrid
  • H. 'Lemon Lime' (R. P. Savory 1977) = H. nakaiana hybrid
  • H. 'Lorna' (R. H. Benedict 1983) = H. nakaiana x H. venusta
  • H. 'Lucky Charm' (E. V. Fisher/AHS 1986) = H. nakaiana hybrid
  • H. 'Marquis' (R. P. Savory 1982) = H. nakaiana hybrid
  • H. 'Oxheart' (E. Minks 1976) = H. 'Green Platter' x H. nakaiana
  • H. 'Pastures New' (A. Summers/E. Smith/P. Ruh 1997) = H. nakaiana hybrid
  • H. 'Peter Pan' (E. Minks 1980) = H. nakaiana x H. 'Helen Field Fisher'
  • H. 'Purple Dwarf' (K. J. W. Hensen 1983) = H. nakaiana hybrid
  • H. 'Shells at Sea' (Anne Arett/AHS 1980) = H. nakaiana hybrid
  • H. 'Soft Touch' (R. P. Savory 1977) = H. nakaiana seedling
  • H. 'Special Gift' (E. V. Fisher 1973) = H. nakaiana hybrid
  • H. 'Valentine Lace' (M. Armstrong 1970) = H. nakaiana hybrid
  • H. 'Warwick Curtsey' (Gil Jones/Hatfield 1995) = H. Dorothy Benedict' x H. nakaiana
  • H. 'Warwick Edge' (G. Jones 1993)= H. 'William Lachman' x H. nakaiana