New guinea impatiens plant named ‘Dongiwilromwhi24’

Abstract

A new and distinct cultivar of Impatiens plant named Dongiwilromwhi24 characterized by its upright to outwardly spreading and mounding plant habit; moderately vigorous growth habit and moderately rapid growth rate; freely branching habit; dense and full appearance; dark green-colored leaves; freely and early flowering habit; double type flowers that are white in color; and good garden performance.

Claims

1. A new and distinct Impatiens plant named Dongiwilromwhi24 as illustrated and described herein.

Description

BRIEF DESCRIPTION OF THE PHOTOGRAPH

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

(2) The photograph is a top perspective view of a typical flowering plant of Dongiwilromwhi24 grown in a container.

DETAILED BOTANICAL DESCRIPTION

(3) The aforementioned photograph and following observations, measurements and values describe plants grown during the summer in 17-cm containers in a polyethylene-covered greenhouse in Puerto Lumbreras, Murcia, Spain and under cultural practices typical of commercial New Guinea Impatiens production. During the production of the plants, day temperatures averaged 30 C., night temperatures averaged 22 C. and light levels averaged 650/m.sup.2/hour. Plants were three months old when the photograph was taken and five months old when the description was taken. In the following description, color references are made to The Royal Horticultural Society Colour Chart, Second Edition, except where general terms of ordinary dictionary significance are used. Botanical classification: Impatiens hawkeri Dongiwilromwhi24. Parentage: Female, or seed, parent.Proprietary selection of Impatiens hawkeri identified as code number NN17-595577-001, not patented. Male, or pollen, parent.Proprietary selection of Impatiens hawkeri identified as code number NN16-610610-007, not patented. Propagation: Type.By terminal vegetative cuttings. Time to initiate roots, summer.About 14 days at temperatures about 20 C. Time to initiate roots, winter.About 17 days at temperatures about 20 C. Time to produce a rooted young plant, summer.About 20 days at temperatures about 20 C. Time to produce a rooted young plant, winter.About 30 days at temperatures about 20 C. Root description.Medium in thickness, fibrous; typically white in color, actual color of the roots is dependent on substrate composition, water quality, fertilizers, substrate temperature and age of roots. Rooting habit.Moderately freely branching; medium density. Plant description: Plant and growth habit.Upright to outwardly spreading and mounding plant habit; broad inverted triangle in overall shape; freely branching habit with lateral branches potentially developing at every node; dense and full appearance; moderately vigorous growth habit and moderate growth rate. Plant height.About 12 cm. Plant diameter.About 27 cm. Lateral branch description: Length.About 6 cm. Diameter.About 6 mm. Internode length.About 3 cm. Strength.Moderately strong; flexible. Aspect.Initially upright to outwardly spreading. Texture and luster.Smooth, glabrous; semi-glossy. Color, developing.Close to 144A. Color, developed.Close to 144A. Leaf description: Arrangement.Typically alternate or in whorls; simple. Length.About 6.5 cm. Width.About 2.9 cm. Shape.Elliptic. Apex.Apiculate. Base.Obtuse. Margin.Serrate with ciliation. Texture and luster, upper surface.Smooth, glabrous; leathery; matte. Texture and luster, lower surface.Smooth, glabrous; leathery; semi-glossy. Venation pattern.Pinnate; arcuate. Color.Developing and fully expanded leaves, upper surface: Close to 137A; venation, close to 147B. Developing and fully expanded leaves, lower surface: Close to 138A; venation, close to 145B. Petiole length.About 2 cm. Petiole diameter.About 3 mm. Petiole texture and luster, upper and lower surfaces.Smooth, glabrous; semi-glossy. Petiole color, upper and lower surfaces.Close to 145B. Flower description: Flower type and flowering habit.Double-type, rounded axillary flowers; freely flowering habit, typically about two to three flower buds and open flowers per lateral branch and about 60 flowers developing per plant during the flowering season; flowers positioned above and beyond the foliar plane, flowers typically face upright to outwardly. Flower longevity.Flowers typically last about four to seven days on the plant under greenhouse conditions; petals self-cleaning, gynoecium persistent. Fragrance.None detected. Natural flowering season.Year-round under greenhouse conditions; in the garden, flowering from spring until fall in Spain; early flowering habit, plants typically begin flowering about eight weeks after planting. Flower buds.Length: About 1 cm. Diameter: About 1 cm. Shape: Ovoid. Texture and luster: Smooth, glabrous; slightly glossy. Color: Close to 145C. Flower diameter.About 6 cm by 6.5 cm. Petals.Quantity and arrangement: Ten per flower in two whorls. Length: About 5 cm. Width: About 4 cm. Shape: Obcordate. Apex: Obtuse, rounded. Base: Cuneate. Margin: Entire; not undulate. Texture and luster, upper and lower surfaces: Smooth, glabrous; slightly glossy; iridescent. Color: When opening and fully opened, upper surface: Close to 155D; venation, close to 155D; color does not change with subsequent development. When opening and fully opened, lower surface: Close to 155D; venation, close to 155D; color does not change with subsequent development. Sepals.Quantity and arrangement: Three in a single whorl; one modified into an elongated spur. Length: About 1.5 cm. Width: About 6 mm. Shape: Ovate. Apex: Acuminate. Base: Obtuse. Margin: Entire. Sepal texture and luster, upper and lower surfaces: Smooth, glabrous; slightly glossy. Color, upper and lower surfaces: Close to 145C. Spur length: About 4 cm. Spur diameter: About 1 mm. Spur shape: Acicular. Spur texture and luster: Smooth, glabrous; semi-glossy. Spur color: Close to 145C. Peduncles.Length: About 6 cm. Diameter: About 3 mm. Angle: About 45 from stem axis. Strength: Moderately strong; flexible. Texture and luster: Smooth, glabrous; semi-glossy. Color: Close to 145C. Reproductive organs.Stamens: Quantity: Five fused at anthers; filaments free. Anther size: About 1 mm by 5 mm. Anther shape: Oblong. Anther color: Close to 155B. Pollen amount: Abundant. Pollen color: Close to 160D. Pistils: Quantity per flower: One. Pistil length: About 5 mm. Stigma diameter: About 1 mm. Stigma shape: Lobed. Stigma color: Close to 145D. Style length: About 4 mm. Style color: Close to 145A. Ovary color: Close to 144A. Seeds and fruits.To date, seed and fruit production has not been observed on plants of the new Impatiens. Pathogen & pest resistance: To date, plants of the new Impatiens have not been observed to be resistant to pathogens and pests common to Impatiens plants. Garden performance: Plants of the new Impatiens have been observed to have good garden performance and tolerate temperatures ranging from about 5 C. to about 45 C.