Hosta ibukiensis (Y. Araki 1942) = H. 'Ibukiensis'
|Hosta Library species file||Hosta 'Ibukiensis'|
|Origin||Japan, area straddling the border between the Gifu and Shiga prefectures, Mount Ibuku. See Map|
Koba Giboshi = small leaved hosta (= H. sieboldii),
Ibuki Giboshi = Hosta from Mount Ibuki
|Plant||30 cm diameter x 25 cm high (12 x 10"). Rootstock thick, rhizomatous; sending out elongated new shoots.|
Leaf 7.5–12.5 x 2.5–4 cm (4–6 x 1–1.5"), elliptical to
oblong, entire, erect and in line with petiole, spreading,
lanceolate to oblong-lanceolate, petiole transition gradual,
narrowing, decurrent, vernal leaves sub-cordate, acuminate
tip, slightly undulate, wavy in the margin, smooth, shiny
light, dull dark green above, glossy lighter green below.
4-5 (6)pairs of veins, impressed above, smooth below.
Scape 50–75 cm (20–30"), straight and erect, not bending,
light green, no purple marks.
Sterile bracts 2–3, green, first tunicated and clasping stem initially, then unfolding, boat-shaped, persistent; fertile bracts large, navicular, thick-coriaceous, green, not withering at anthesis.
Raceme long, secund, 7-25 flowers, spaced evenly, pedicels short ±5mm (0.2").
Flowers in bud very clavate-club-shaped, blunt, 4 cm long, 3 cm broad (1.5 x 1.25"), tepals purple suffused with distinct dark purple stripes, gradually expanding, often recurved and lily-shaped, outer tepals oblong, pointed, inner tepals shorter and less pointed, blunt, inside tepal coloration purple on white, 3 distinct, darker stripes, expanding.
Anthers yellow, white-backed.
|Fertility||Produces seed pods that are obtuse, triangular, truncated tip, with mostly aborted ova; low pollen viability. Barely fertile|
|Suitable for containers|
|Special remarks||A H. sieboldii morph|
|In Hosta Mill Collection||Yes|