BACKGROUND OF THE INVENTION
The present invention Hosta 'Time
Tunnel’, relates to a new and
distinct cultivar of
Hosta sieboldiana and will hereinafter be
referred to as 'Time
The inventor discovered the new
Tunnel' as a whole
plant mutation of H. 'Frances Williams' (unpatented) at
his nursery in Kensington, Conn. in
April of 2000. 'Time
discovered in a plug tray of 'Frances Williams' that originated
as rooted transplants produced by
selected as unique for its
variegated leaf pattern of wide
golden colored margins surrounding
green centers. 'Frances Williams' has foliage with a similar
variegation pattern, however the
margins of 'Time
Asexual reproduction of the new
cultivar was first accomplished by
in vitro propagation in Kensington,
Conn. in the spring of 2002. Asexual
reproduction of the new cultivar by
division and tissue culture has
shown that the unique features of 'Time
Tunnel' are stable and
reproduced true to type in
BRIEF SUMMARY OF THE INVENTION
The following traits have been
repeatedly observed and represent
the characteristics of the new
cultivar. These attributes in
combination distinguish 'Time
Tunnel' as a new and unique cultivar
variegated foliage with green
centers and wide margins that emerge
chartreuse, change to a bright gold,
and mature to a creamy gold color.
2. The margins of the
foliage of 'Time
Tunnel' are about
twice the width of the parent plant, 'Frances Williams'. The wide margins
Tunnel' comprise about 50%
of the leaf area and are retained
throughout the growing season.
white flowers in mid summer, similar
to 'Frances Williams
BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying colored photographs
were taken in late summer and
illustrate the overall appearance
and distinct characteristics of the
new Hosta. The plants in the
photographs are three year-old
plants of 'Time
Tunnel' as grown
outdoors in Kensington, Conn. in
FIG. 1 provides an overall view of
FIG. 2 is of a close-up view of the
foliage of 'Time
The colors in the photographs are as
close as possible with the
photographic and printing technology
utilized. The color values cited in
the DETAILED BOTANICAL DESCRIPTION accurately describe the colors of
the new Hosta.
DETAILED BOTANICAL DESCRIPTION OF
The following is a detailed
description of 3 year-old plants of
the new cultivar as grown outdoors
in Kensington, Conn. The phenotype
of the new cultivar may vary with
variations in environmental,
climatic, and cultural conditions,
as it has not been tested under all
possible environmental conditions.
The color determination is in
accordance with the 2001 The
Royal Horticultural Society Colour Chart, London,
England, except where general color
terms of ordinary dictionary
significance are used.
+ Botanical Classification:
' is a cultivar of Hosta
occurring whole plant mutation of H
. 'Frances Williams
' (syn. Hosta
• General description:
- Blooming period: From mid
June to mid July.
- Plant habit: Herbaceous
open-mounded foliage of large size.
- Height and spread: Foliage
reaches up to about 53 cm (21 in.) (22
inches) in height and up to about 91 cm (36 in.) (36 inches) in width.
- Hardiness: Zone 3-8.
- Culture: Full shade to part
shade in moist, organic rich soils.
- Diseases and pests: No
susceptibility or resistance to
diseases or pests has been observed
'. Thick substance
of leaves may confer slug
- Root description: Freely
propagation is the preferred method
utilizing typical methods for Hosta
, division are also possible.
- Root development: Rooted
transplants from tissue culture
fully develop in a 32-cell liner in
about 6 to 8 weeks in a greenhouse
with average temperatures of about
- Growth rate: Moderately
• Foliage description:
- Leaf shape: Broadly cordate
to broadly ovate.
- Leaf division: Simple.
- Leaf base: Cordate.
- Leaf apex: Cuspidate.
- Leaf venation: About 16
pairs of veins, camptodrome pattern,
venation is noticeable due to rugose
nature of leaves, sunken on upper
surface and protruding on lower
surface, vein color on both surfaces
matches leaf color.
- Leaf margins: Entire with
- Leaf attachment: Petiolate.
- Leaf arrangement: Basal,
radiate spirally from base.
- Leaf orientation: Held
horizontal to slightly arching
downward to slightly cupped upward
on mature, heavily rugose leaves,
petioles held upright at an angle
about 80 to 90°.
- Leaf surface: Upper and
lower: glaucous with lower surface
more glaucous, mature leaves are
- Leaf color: Young leaves
(upper surface): centers N138A to
N138B, margins 144A to 144B,
intermediate area 139C. Young leaves
(lower surface): centers 189A,
margins between 144B and 139C,
intermediate area is not distinct.
Maturing leaves (upper surface):
centers 139A and 139B, margins N144A
to N144B, intermediate area 139C.
Maturing leaves (lower surface):
centers 138B, margins N144A and
139B, intermediate area is not
distinct. Mature leaves (upper
surface): centers 139A and 139B,
margins 160A to 160C to 155D,
intermediate area 139C to 139D.
Mature leaves (lower surface):
centers 138B, margins 160B to 160C
to 155D, intermediate area not
- Leaf variegation
pattern: For mature leaves, on
average the margin comprises about
50% of the leaf area. In comparison,
the margin of the parent plant, 'Frances Williams’, comprises about
20% of the leaf area.
- Leaf size: Up to about 25 cm (10 in.) in length, up to about
20 cm (7.9 in.) (8 inches) in width.
Measurements on a three year-old
plant, leaf size may become larger
after more years of maturity.
- Leaf quantity: Average 5 per
- Petiole size: Average of 12 cm (4.7 in.) in length, up to about 1.2 cm (0.5 in.) in
- Petiole color: 144A on inner
surface, 144B on outer surface.
- Petiole shape: Sulcate.
• Flower scape description:
- Scape shape: Round, solid.
- Scape number: One per mature
eye under normal growing conditions.
- Scape posture: Straight,
strong, held upright at about 80 to
90° from horizontal.
- Scape size: About 53 to 60 cm (24 in.) in length, about 5 mm in width
and tapering to 1 mm at apex.
- Scape color: 144A.
- Scape surface: Glaucous.
- Leaf bracts: 1 per scape,
144B in color, ovate in shape,
average of 5 cm (2 in.) in length and 3.5 cm (1.4 in.)
- Flower bracts: 1 per flower,
broadly elliptic, 85D in color,
about 2.0 cm (0.8 in.) in length and about 1.25 cm (10 in.) in width.
• Flower description:
- Inflorescence type: Terminal
racemes on elongated flower scapes.
- Lastingness of Inflorescence:
About 3 to 4 weeks
from first opening bloom to fading
of last opening bloom, individual
blooms last about one week.
- Flower shape: Bell-shaped (campanulate-tubular).
arrangement: Alternate on raceme.
- Flower fragrance: Slight
- Flower number: About 28 per
- Flower bud shape: Obovate.
- Flower bud size: Up to about
3.5 cm (1.4 in.) in length and about 1.2 cm (0.5 in.) in
- Flower bud color: 85D.
- Flower size: Fully open:
About 4.7 cm (2.8 in.) in length and up to
about 2.7 cm (2.8 in.) in width.
- Flower color: N155B,
effective color is white with a
slight blush of lavender.
- Flower aspect: Outward and
- Pedicels: About 2 mm in
diameter, 1.7 cm (0.7 in.) in length, 138B in
color, texture is glabrous.
- Perianth features: Comprised
of 6 Tepals, 3 interior and 3
exterior, overlapping in expanded
region and fused in tube region.
characteristics: Effectively white
in color N155A suffused in lavender
85D on center of each tepal (upper
and lower surfaces), about 4.6 cm (1.8 in.) in
length, about 1.2 cm (0.5 in.) in width, acute
apex, entire margins, glabrous
• Reproductive organs:
- Gynoecium: 1 pistil, style;
about 4.7 mm in length width and 1
mm in diameter, 155C in color,
stigma; 1-lobed and 155C in color,
ovary; compound, 5 mm in height, 4
mm in diameter, composed of 3
- Androecium: 6 stamens, 1 mm
in width, 3.5 cm (1.4 in.) in length,
filaments; 155C in color, anthers;
oblong in shape, 4 mm in length, 5
mm in width, attachment is
dorsifixed, 86C in color, pollen;
low in abundance, 21A in color.
Capsule; 2.7 cm (2.8 in.) in
length, 7 mm in diameter, 138B in
color, texture is glabrous seed;
flattened oval in shape, 8 mm in
length, 4 mm in width, average of 12
per capsule, 202A in color.