BACKGROUND OF THE INVENTION
The present invention relates to a
new and distinct cultivar of Hosta plant, botanically known as Hosta, cultivar name, 'Touch of Class'.
The new cultivar was selected as a
chemically induced mutation by the
inventor of the non-patented Hosta hybrid 'June' (unpatented) in about
June of 1995 in Waseca, Minnesota.,
United States of America.
Asexual propagation of the new
cultivar was in 1999 at Waseca, Minnesota., The United States of America,
by division and tissue culture has
shown that the unique features of
this new Hosta plant are stable and
reproduced true to type in
successive generations of asexual
propagation.
BRIEF SUMMARY OF THE INVENTION
The following traits have been
repeatedly observed and are
determined to be the unique
characteristics of 'Touch of Class'.
These characteristics in combination
distinguish the new Hosta as a new
and unique cultivar:
1. Medium sized, heavily substanced
cordate leaves which tend to be more
pointed and wedge shaped when the
plant is mature comprising a compact
small to medium to sized plant
mound;
2. Yellow centered leaves with a
very wide uneven blue margin which
comprises approximately two-thirds
of the leaf area, the leaves having
an apparent third color, that may be
yellow-green to green in apparent
color where the margin and center
colors meet; and
3. Relatively large pale lavender
flowers are presented above the
foliage in late-summer.
The new Hosta can be compared to its
parent cultivar, ‘June'. In the new Hosta the variegation pattern has a
much more pronounced and substantial
margin than in the Hosta ‘June'. The
yellow center of the new Hosta is
reduced proportionally to the
increased size of the margin. In
addition, the new Hosta bears
flowers which are noticeably larger
than the flowers of the parent
cultivar.
The new Hosta cultivar has not been
observed under all possible
environmental conditions. The
phenotype may vary to some extent
with variations in environmental
conditions such as temperature and
light intensity, without any
variance in genotype.
BRIEF DESCRIPTION OF THE PHOTOGRAPHS
The accompanying colored photographs
illustrate the overall appearance of
the new cultivar, showing the colors
as true as is reasonably possible to
obtain in colored reproductions of
this type.
The first sheet of photographs
comprises a top perspective view of
a typical plant of the new Hosta, and a close-up view of a typical
leaf of the new Hosta.
The second sheet of photographs
illustrates for comparative purposes
a side view of the larger flower of
the of 'Touch of Class' on the left
and the relatively smaller flower of
the parent cultivar 'June' on the
right. Also, for comparative
purposes a front view of the larger
flower size of the of 'Touch of Class' on the left and the
relatively smaller sized flower of
the parent cultivar 'June' on the
right.
Leaf and flower colors in the
photographs may appear differently
from the actual colors due to light
reflectance.
DETAILED DESCRIPTION OF THE INVENTION
In the following description, color
references are made to The Royal
Horticulture Society Colour Chart
except where general terms of
ordinary dictionary significance are
used. The following observations and
measurements describe three-year old
plants, as depicted in the
accompanying color photographs,
which were grown outdoors in Waseca, Minnesota., United States of America.
Botanical Classification: Hosta, result of chemically induced
mutation.
Parentage: Hosta with cultivar name ‘June'.
Propagation:
Method: By division and tissue
culture.
Plant description:
Plant shape: Compact, dome-shaped.
Growth habit: Initially upright when
young, with leaves outwardly arching
as they mature.
Culture: Light to medium shade in
moist soil.
Plant type: Herbaceous perennial.
Plant height: About 7 inches from
soil level to top of leaf plane.
Plant diameter: About 16 inches.
Vigor and growth rate: Slow to
moderate.
Disease resistance: No known
particular resistance or
susceptibility to disease known to Hosta observed.
Foliage description: Leaf shape:
Broadly cordate with immature leaves
being more wedge shaped. Leaf
margin: Entire. Leaf texture: Very
heavy, good substance with leaves
that are fairly smooth with the
exception of ridges formed by the
leaf veins. Leaf size: Length: About
5.5 inches. Width: About 4.5 inches.
Venation pattern: Campylodrome with
11 pairs of veins. Leaf color:
Centers: light yellow (about 2D)
Margins: Blue-green, about 114D in
the spring changing to 114B by
mid-summer, margins being ½ of an
inch to 2 inches wide. A third color
appears on the leaf where the
margins and centers overlap, the
third color may range in from
Yellow-green (about 144A) to Green
(about 138A).
Petioles description: In a mature
plant petioles may have a length of
approximately 25-30 centimeters in
and a diameter of about 1.0 cm (0.4 in.) to
about 2.0 cm (0.8 in.) . The petiole has a
central region having light yellow
color (about 2D) with a margin
having a blue-green color (about
114D).
Flower description:
Bloom period: Mid-summer.
Fragrance: No observed fragrance.
Flower arrangement: Raceme of
numerous single flowers comprised of
six tepals. The number of flowers
per raceme varies from about 23 to
about 32 with an average of about
28, with each flower lasting
approximately 1 day.
Flower shape: Funnel-shaped.
Flower scape: 12-17 inches.
Flower color: Nearly white with pale
lavender (about 82D) centers to the
interior of the flower petals.
Scape description:
Number: The number of scapes per
plant is dependent on the maturity
of the plant. Each mature eye
comprising the clump may produce a
flower scape under normal growing
conditions.
Description of Reproductive organs: The reproductive organs comprise six
stamens and a compound ovary having
three locules. The size of the
anther is approximately 0.5 cm (0.2 in.) with
a color of about 11A though this may
vary to light orange or orange. The
pollen is average to moderate in
abundance. The stigma is a three
lobed stigma of color 155C with a
length ranging from about 5 cm (2 in.) to
about 8 cm (3.1 in.), and the style has a
color of about 155A.
Seed development: Has not been
observed.
Root development: From transfer to
rooting media in tissue culture,
rooting takes approximately 4 weeks
at about 68 degrees Fahrenheit.
After transfer from stage III in
tissue culture to planting into soil
in a green house, a well rooted
plant is produced in approximately 8
weeks with a day time temperature of
about 68 degrees Fahrenheit (about
65 degrees Fahrenheit at night) and
a soil temperature of about 78
degrees Fahrenheit.