Hosta 'Densa'

Hosta densa (F. Maekawa 1938) = H. 'Densa'

Subgenus Schmid Giboshi Zonneveld  
Section Schmid Intermediae Zonneveld  
Hosta Library species file Hosta 'Densa'
Origin Japan, limited to Kii Peninsula in Mie en Shiga prefectures, southern of  Suzuka Mountain Range.  See map.
Habitat On relatively dry, low mountain slopes in wooded areas and under sub-shrubs in moist bottom land along rivers.
Japanese name Keyari Giboshi.  The keyari is a kind of feudal pike.
Plant 45–55 cm diameter x 35–40 cm high (18–22 x 14–16").
Leaf Petiole 22.5–30 cm  (9–12"), erect, green, purple-dotted at the base, deeply grooved.
Leaf 17.5–30.5 cm x 10–20 cm (7–12" x 4–8"), erect and in line with petiole, entire, ovate-elliptical to ovate-cordate, cuspidate, petiole-leaf transition cordate, truncate, acuminate tip, flat surface, but undulate-wavy along the margin, opaque dark green above, lighter green below.
8–10 (12) pairs of veins, closely spaced, sunken above, very projected, smooth, below.
Inflorescense Scape 60 (90) cm (24 (36)"), 0.5 cm (0.2") thick, straight, later inclining, green, lightly purple-spotted at base.
Sterile bracts very large, navicular, thin, membranous, soft, green some turning white, pointed; fertile bracts whitish. 
Raceme short, tight, with up to 40 flowers very densely arranged
Flowers 5 cm long, 2.5 cm broad (2 x 1"), medium size; tepals white, but slightly purple suffused inside, later fading to all-white, expanding, funnel-shaped, in the central part dilated bell-shaped, tepals spreading straight to the axis of perianth, stamens not very superior, equal or slightly shorter than perianth; narrow part of the perianth never grooved.
Anthers bi-color purple-yellow.
Blooming Time September
Fertility Fertile
Growing conditions  
Suitable for containers  
Special remarks Possibly an interspecific hybrid of a H. montana form and a  H. kikutii form.

The true H. 'Densa' is seldom seen in cultivation.

In Hosta Mill Collection No
  • H. 'Density' (Fairway Enterprises 1990)  and
  • H. 'Spike Jones' (E. Schultz 2002)

are registered as being of H. 'Densa' progeny, but this is incorrect.