<i>Oleander </i>plant named ‘ATXNOKHP’

Abstract

A new and distinct cultivar of Oleander plant named ATXNOKHP, characterized by its relatively compact, upright to somewhat outwardly spreading plant habit; freely branching habit; dark green-colored leaves; freely flowering habit; dark red purple-colored flowers; and good garden performance.

Claims

1. A new and distinct Oleander plant named ATXNOKHP as illustrated and described.

Description

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

(1) The accompanying photographs illustrate the overall appearance of the new Oleander 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 Oleander plant.

(2) The photograph on the first sheet (FIG. 1 of 2) comprises a side perspective view of a typical flowering plant of ATXNOKHP grown in an outdoor nursery in Austin, Tex.; the plant used in the photograph was four years old.

(3) The photograph on the second sheet (FIG. 2 of 2) is a close-up view of typical flowers of ATXNOKHP of a plant grown in a polyethylene-covered greenhouse environment in Grand Haven, Mich.; the plant used in the photograph was two years old.

DETAILED BOTANICAL DESCRIPTION

(4) Plants used for the following observations and measurements were grown during the summer in three-gallon containers in a polyethylene-covered greenhouse in Grand Haven, Mich. Plants were grown under cultural practices typical of commercial Juniper plant production. During the production of the plants, day temperatures ranged from 18 C. to 27 C. and night temperatures ranged from 5 C. to 10 C. Plants were two years 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: Nerium oleander ATXNOKHP. Parentage: Female, or seed, parent.Unnamed selection of Nerium oleander, not patented. Male, or pollen, parent.Unknown selection of Nerium oleander, not patented. Propagation: Type.By softwood stem cuttings. Time to initiate roots, summer.About three weeks at temperatures about 25 C. Time to produce a rooted young plant, summer.About two months at temperatures about 25 C. Root description.Medium in thickness, fibrous; typically white 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.Moderate branching; medium density. Plant description: Plant and growth habit.Perennial shrub; relatively compact, upright to somewhat outwardly spreading plant habit; moderately vigorous growth habit and moderate growth rate. Branching habit.About ten basal branches develop per plant. Plant height.About 72 cm. Plant diameter or spread.About 104 cm. Lateral branches.Length: About 63 cm. Diameter: About 5 mm. Internode length: About 4 cm to 5 cm. Strength: Strong. Aspect: About 15 to 45 from vertical. Texture: Slightly pubescent. Color, developing: Close to 144C, distally, tinged with 184C. Color, developed: Close to 199B. Leaf description: Arrangement.Whorled, simple. Length.About 12.5 cm. Width.About 1.7 cm. Shape.Narrowly elliptic to lanceolate. Apex.Acute. Base.Cuneate. Margin.Entire. Texture, upper and lower surfaces.Smooth, glabrous; leathery. Venation pattern.Pinnate. Color.Developing and fully expanded leaves, upper surface: Close to 137B; venation, close to 145C. Developing and fully expanded leaves, lower surface: Close to 147B; venation, close to 150D. Petioles.Length: About 5 mm. Diameter: About 3 mm. Texture, upper surface: Smooth, glabrous. Texture, lower surface: Slightly pubescent. Color, upper surface: Close to 145C. Color, lower surface: Close to 150D. Flower description: Flower form and flowering habit.Single flowers arranged in terminal panicles; freely flowering habit with typically about 25 flowers developing per inflorescence; flowers face mostly upright to outwardly. Fragrance.None detected. Natural flowering season.Flowering is continuous during July and August in Michigan. Inflorescence height.About 10.5 cm. Inflorescence diameter.About 13.5 cm. Flower diameter.About 4.25 cm, throat diameter is relatively medium. Flower depth.About 4.5 cm, tube length is relatively short. Flower buds.Length: About 2.5 cm. Diameter: About 6 mm. Shape: Elliptic. Color: Proximally, close to 60B and distally, close to 60A. Petals.Quantity and arrangement: About five petals arranged in a single whorl fused towards the base. Length: About 2 cm. Width: About 1.8 cm. Shape: Obovate. Apex: Obtuse. Margin: Entire. Texture, upper and lower surfaces: Smooth, glabrous; soft. Color: When opening and fully opened, upper surface: Close to 60B, throat, close to 60B. When opening and fully opened, lower surface: Close to 186B, tube, close to 186B. Petaloids.Quantity and arrangement: About 20 fringe-like petaloids arranged in several whorls at the center of the flower and fused towards the base. Length: About 1 cm. Width: About 1 mm. Shape: Irregular, typically linear. Apex: Acute. Margin: Entire. Aspect: Semi-erect to erect. Texture, upper and lower surfaces: Smooth, glabrous; soft. Color: When opening and fully opened, upper surface: Close to 60B. When opening and fully opened, lower surface: Close to 60B. Sepals.Quantity and arrangement: Five in a single whorl; fused towards the base, moderately reflexed. Length: About 5 mm. Width: About 2 mm. Shape: Lanceolate. Apex: Acute. Margin: Entire. Texture, upper and lower surfaces: Pubescent. Color: When opening and fully opened, upper surface: Close to 187B. When opening and fully opened, lower surface: Close to 187B. Peduncles.Length: About 2 cm to 4.5 cm. Diameter: About 2 mm. Strength: Strong. Aspect: About 45 from vertical. Texture: Pubescent. Color: Close to 144C slightly tinged with close to 184C. Pedicels.Length: About 3 mm. Diameter: About 1.5 mm. Strength: Strong. Aspect: About 45 from peduncle axis. Texture: Pubescent. Color: Close to 144C slightly tinged with close to 184C. Reproductive organs.Stamens: Quantity: About five per flower, relatively strongly extruded. Filament length: About 1.5 cm. Filament color: Close to 157D. Anther length: About 1 cm. Anther shape: Lanceolate, twisting. Anther color: Close to 157D. Pollen: Moderate. Pollen color: Close to 157D. Pistils: Quantity: One per flower. Pistil length: About 1 cm. Stigma diameter: About 1 mm. Stigma color: Close to 186D. Style length: About 5 mm. Style color: Close to 186D. Fruits and seeds.To date, fruit and seed development has not been observed on plants of the new Oleander. Pathogen & pest resistance: Plants of the new Oleander have not been observed to be resistant to pathogens and pests common to Oleander plants. Temperature tolerance: Plants of the new Oleander have been observed to tolerate high temperatures about 45 C. and to be hardy to USDA Hardiness Zone 9.