USPP36159P2

USPP36159P2 - Helleborus plant named ‘HG 1420’

Info

Publication number: USPP36159P2
Application number: US18/389,559
Authority: US
Inventors: Josef Heuger
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-11-14
Filing date: 2023-11-14
Publication date: 2024-09-24
Anticipated expiration: 2043-11-14

Abstract

A new and distinct cultivar of Helleborus plant named ‘HG 1420’, characterized by its upright to somewhat outwardly spreading and mounded plant habit; moderately vigorous growth habit; dark green-colored leaflets with lighter green-colored venation; freely flowering habit; greyed reddish purple-colored flowers; and good garden performance.

Description

Botanical designation: Helleborus ericsmithii X Helleborus x hybridus.

Cultivar denomination: ‘HG 1420’.

STATEMENT REGARDING PRIOR DISCLOSURES BY INVENTOR/APPLICANT

An European Community Plant Breeder's Rights application for the instant plant was filed by the Inventor/Applicant, Mr. Josef Heuger of Glandorf, Germany, on Dec. 1, 2022, application number 2022/2742. Foreign priority is not claimed to this application.

The Inventor/Applicant asserts that no publications nor advertisements relating to sales, offers for sale or public distribution occurred more than one year prior to the effective filing date of this application. Any information about the claimed plant would have been obtained from a direct or indirect disclosure from the Inventor or Applicant. Inventor/Applicant claims a prior art exception under 35 U.S.C. 102(b)(1) for disclosure and/or sales prior to the filing date but less than one year prior to the effective filing date.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Helleborus plant, botanically known as Helleborus ericsmithii X Helleborus x hybridus and hereinafter referred to by the name ‘HG 1420’.

The new Helleborus plant is a product of a planned breeding program conducted by the Inventor in Glandorf, Germany. The objective of the breeding program was to create new uniform Helleborus plants with unique and attractive plant habit, leaf and flower coloration and tolerance to biotic and abiotic stresses.

The new Helleborus plant originated from a cross-pollination conducted by the Inventor in Glandorf, Germany in December, 2013 of a proprietary selection of Helleborus ericsmithii identified as code number P847, not patented, as the female, or seed, parent and a proprietary selection of Helleborus x hybridus identified as code number O1644, not patented, as the male, or pollen, parent. The new Helleborus plant was discovered and selected by the Inventor as a single flowering plant from within the progeny of the stated cross-pollination grown in a controlled greenhouse environment in Glandorf, Germany in December, 2015.

Asexual reproduction of the new Helleborus plant by in vitro axillary meristem culture in a controlled environment in Glandorf, Germany since April, 2016 has shown that the unique features of this new Helleborus plant are stable and reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

Plants of the new Helleborus have not been observed under all possible combinations of environmental conditions and cultural practices. The phenotype may vary somewhat with variations in environmental conditions such as temperature and light intensity without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘HG 1420’. These characteristics in combination distinguish ‘HG 1420’ as a new and distinct Helleborus plant:

- 1. Upright to somewhat outwardly spreading and mounded plant habit.
- 2. Moderately vigorous growth habit.
- 3. Dark green-colored leaflets with lighter green-colored venation.
- 4. Freely flowering habit.
- 5. Greyed reddish purple-colored flowers.
- 6. Good garden performance.

Plants of the new Helleborus differ from plants of the female parent selection in the following characteristics:

- 1. Plants of the new Helleborus are more compact than plants of the female parent selection.
- 2. Leaflets of plants of the new Helleborus are darker green in color than leaflets of plants of the female parent selection.

Plants of the new Helleborus differ from plants of the male parent selection in the following characteristics:

- 1. Leaflets of plants of the new Helleborus are darker green in color than leaflets of plants of the male parent selection.
- 2. Flowers of plants of the new Helleborus are darker reddish purple in color than flowers of plants of the male parent selection.

Plants of the new Helleborus can also be compared to plants of Helleborus x ericsmithii X Helleborus x hybridus ‘COSEH 4200’, disclosed in U.S. Plant Pat. No. 28,297. In side-by-side comparisons, plants of the new Helleborus differ primarily from plants of ‘COSEH 4200’ in flower color as flowers of plants of the new Helleborus are greyed reddish purple in color whereas flowers of plants of ‘COSEH 4200’ are pink in color.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying colored photographs illustrate the overall appearance of the new Helleborus plant showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photographs may differ slightly from the color values cited in the detailed botanical description which accurately describe the colors of the new Helleborus plant.

The photograph at the top of the sheet (FIG. 1 ) is a side perspective view of a typical flowering plant of ‘HG 1420’ grown in a container.

The photograph at the bottom of the sheet (FIG. 2 ) is a close-up view of a typical flower of ‘HG 1420’.

DETAILED BOTANICAL DESCRIPTION

The aforementioned photographs and following observations, measurements and values describe plants grown during the early spring in 15-cm containers in a glass-covered greenhouse in Glandorf, Germany and under cultural practices typical of commercial Helleborus production. During the production of the plants, day temperatures ranged from 12 C to 32 C and night temperatures ranged from 5 C to 12 C. Plants were 48 weeks old when the photographs were taken and 14 months old when the description was taken. In the following description, color references are made to The Royal Horticultural Society Colour Chart, 2015 Edition, except where general terms of ordinary dictionary significance are used.

Botanical classification: Helleborus ericsmithii X Helleborus x hybridus ‘HG 1420’.
Parentage:
- - Female, or seed, parent.—Proprietary selection of Helleborus ericsmithii identified as code number P847, not patented.
  - Male, or pollen, parent.—Proprietary selection of Helleborus x hybridus identified as code number O1644, not patented.
Propagation:
- - Type.—In vitro axillary meristem culture.
  - Time to initiate roots, winter.—About 55 days at temperatures about 12 C.
  - Time to produce a rooted young plant, winter.—About 170 days at temperatures ranging from about 4 C to 15 C.
  - Root description.—Thick to thin, fleshy; typically white to brownish in color, actual color of the roots is dependent on substrate composition, water quality, fertilizer type and formulation, substrate temperature and physiological age of roots.
  - Rooting habit.—Low branching; sparse.
Plant description:
- - Plant and growth habit.—Herbaceous perennial; upright to somewhat outwardly spreading and mounding plant habit with flowers held above the foliar plane; plant shape, roughly oblong; moderately vigorous growth habit and moderate to rapid growth rate.
  - Plant height, soil level to top of foliar plane.—About 33.5 cm.
  - Plant height, soil level to top of flowers.—About 57.3 cm.
  - Plant diameter (area of spread).—About 44.8 cm.
Leaf description:
- - Arrangement.—Leaves arranged in a basal rosette; leaves palmately compound with typically five leaflets per leaf.
  - Leaf length.—About 19.6 cm.
  - Leaf width.—About 21.4 cm.
  - Leaflet length.—About 12 cm.
  - Leaflet width.—About 6.3 cm.
  - Leaf shape.—Palmate; roughly reniform in outline.
  - Leaflet shape.—Elliptic to ovate or broadly ovate.
  - Leaflet apex.—Acute.
  - Leaflet base.—Attenuate.
  - Leaflet margin.—Serrate; moderately coarsely undulate.
  - Leaflet texture and luster, upper and lower surfaces.—Smooth, glabrous; coriaceous and tough; slightly glossy.
  - Leaflet venation pattern.—Pinnate and reticulate.
  - Leaflet color.—Developing leaflets, upper surface: Slightly darker than NN137A; midvein, proximally, tinged with close to N186C. Developing leaflets, lower surface: Slightly darker than close to N77A; midvein, close to 187A. Fully developed leaflets, upper surface: Darker than close to N189A; venation, close to 144A and midvein, proximally, close to a blend of N186C and 200A. Fully developed leaflets, lower surface: Darker than close to 191A slightly tinged with close to N186C; venation, close to 183A to 183B.
  - Petioles.—Length: About 22.2 cm. Diameter: About 5 mm by 7 mm. Strength: Strong. Texture and luster, upper and lower surfaces: Smooth, glabrous; moderately glossy. Color, upper surface: Close to 146B; moderately to heavily covered with fine dots, close to N186C. Color, lower surface: Close to N186C; slightly covered with fine dots, close to 146C.
Flower description:
- - Flower shape and habit.—Single rotate bowl-shaped flowers arranged in panicles; freely flowering habit with about six to ten flowers per inflorescence and about 32 flowers and flower buds per plant; flowers face mostly outwardly to slightly nodding.
  - Fragrance.—None detected.
  - Natural flowering season.—Plants begin flowering about ten months after planting; plants flower naturally during the late winter into the early spring in Germany.
  - Flower longevity on the plant.—About ten days; sepals persistent, other flower parts are not persistent.
  - Flower buds.—Length: About 1.8 cm. Diameter: About 1 cm. Shape: Ovate. Texture and luster: Smooth, glabrous; matte to slightly glossy. Color: Close to a blend of 59A and N79B.
  - Inflorescence height (including peduncle).—About 50.7 cm.
  - Inflorescence diameter.—About 21.3 cm.
  - Flower diameter.—About 8.1 cm.
  - Flower depth.—About 2.8 cm.
  - Petals.—All petals are transformed into nectaries.
  - Sepals.—Quantity and arrangement: About five, arranged in a single whorl. Length: About 4.5 cm. Width: About 3.6 cm. Shape: Broadly ovate to close to broadly elliptic; slightly concave. Apex: Broadly and bluntly acute. Base: Cuneate. Margin: Entire, occasionally one or two coarse teeth. Texture and luster, upper and lower surfaces: Smooth, glabrous; slightly glossy. Color: When opening, upper surface: Close to a blend of 59A and N79B; at the base, close to 145B. When opening, lower surface: Close to 187A and 187B; venation, close to 187A. Fully opened, upper surface: Close to a blend of N77A and N186C; venation, similar to lamina; color does not change with subsequent development. Fully opened, lower surface: Close to N77A; venation, slightly darker than N77A; color does not change with subsequent development.
  - Flower bracts.—Quantity per flower: Typically one or two. Length: About 5.2 cm. Width: About 3.9 cm. Shape: Ovate to broadly obovate. Apex: Acute to cleft to three-lobed with acute tips. Base: Truncate to obtuse. Margin: Proximally, entire; distally, finely serrate; slightly coarsely undulate. Color, upper surface: Close to a blend of NN137A and 139A; midvein, tinged with close to N186C. Color, lower surface: Slightly darker than N77A.
  - Peduncles.—Length: About 39.3 cm. Diameter: About 6.5 mm to 7 mm. Aspect: About 15 degrees from vertical. Strength: Strong. Texture and luster: Smooth, glabrous; moderately glossy. Color: Close to 183A; moderately covered with fine dots, close to 151A to 151B.
  - Pedicels.—Length: About 1.9 cm. Diameter: About 2.5 mm. Aspect: About 40 degrees from peduncle axis. Strength: Moderately strong. Texture and luster: Smooth, glabrous; moderately glossy. Color: Close to 183A.
  - Reproductive organs.—Stamens: Quantity per flower: About 70. Filament length: About 1.6 cm. Filament color: Close to 182D. Anther shape: Double and broadly reniform; basifixed. Anther size: About 1.75 mm by 3 mm. Anther color: Close to 154C. Pollen amount: Sparse. Pollen color: Close to 4D to lighter than 4D. Pistils: Quantity per flower: About four to six. Pistil length: About 1.6 cm. Stigma diameter: About 0.3 mm. Stigma shape: Club-shaped. Stigma color: Close to 157A. Style length: About 1.55 cm. Style color: Close to N79A. Ovary color: Close to 183A. Nectaries (transformed petals): Quantity per flower: About 9 to 13. Length: About 1.1 cm. Diameter: About 5 mm. Shape: Tubular, flattened; apices, obtuse. Texture and luster, inner and outer surfaces: Smooth, glabrous; slightly glossy. Color, immature, inner surface: Close to 144B; towards the apex, close to 150A; at the apex, tinged with close to 181B. Color, immature, outer surface: Close to 144B; towards the apex, close to 150A; at the apex, tinged with close to 181B; at the base, close to 178A. Color, mature, inner surface: Close to 144B; towards the apex, close to 151C to 151D; distally, tinged with close to 181B; venation, similar to lamina color; with subsequent development, color becoming closer to N144A and distally, close to 178A. Color, mature, outer surface: Close to 144B; towards the apex, close to 151C to 151D; distally, tinged with close to 181B; at the base, tinged with close to 177A; venation, similar to lamina color; with subsequent development, color becoming closer to N144A and distally, close to 178A; at the base, slightly tinged with close to 177A.
  - Seeds and fruits.—To date, seed and fruit development have not been observed on plants of the new Helleborus.
Garden performance: Plants of the new Helleborus have been observed to have good garden performance and to tolerate rain, wind, high temperatures about 35 C and to be suitable for USDA Hardiness Zones 5 through 9.
Pathogen & pest resistance: To date, plants of the new Helleborus have not been observed to be resistant to pathogens and pests common to Helleborus plants.

Claims

It is claimed:

1. A new and distinct Helleborus plant named ‘HG 1420’ as illustrated and described.