<i>Mandevilla </i>plant named ‘Sunpa 6173’

Abstract

A new and distinct cultivar of Mandevilla plant named ‘Sunpa 6173’, characterized by its upright plant habit; vigorous growth habit; freely branching habit; early and freely flowering habit; long flowering period; and medium-sized red-colored flowers with orangish yellow-colored centers.

Claims

1. A new and distinct Mandevilla plant named ‘Sunpa 6173’ as illustrated and described.

Description

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

(1) The accompanying colored photographs illustrate the overall appearance of the new Mandevilla 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 actual colors of the new Mandevilla plant.

(2) The photograph at the top of the sheet (FIG. 1) is a side perspective view of a typical flowering plant of ‘Sunpa 6173’ grown in a container.

(3) The photograph at the bottom of the sheet (FIG. 2) is a close-up view of a typical flower of ‘Sunpa 6173’.

DETAILED BOTANICAL DESCRIPTION

(4) The aforementioned photographs and following observations, measurements and values describe plants grown during the late summer in 15-cm containers in an outdoor nursery in Higashiomi, Shiga, Japan and under cultural practices typical of commercial Mandevilla production. During the production of the plants, day temperatures averaged 25° C. and night temperatures averaged 15° C. Plants were six months old when the photographs and detailed description were 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: Mandevilla hybrida ‘Sunpa 6173’. Parentage: Female, or seed, parent.—Proprietary selection of Mandevilla hybrida identified as code number 13M-41-7, not patented. Male, or pollen, parent.—Proprietary selection of Mandevilla hybrida identified as code number M37-1, not patented. Propagation: Type.—By terminal vegetative cuttings. Time to initiate roots, summer and winter.—About two weeks at temperatures about 23° C. to 25° C. Time to produce a rooted young plant, summer and winter.—About five to six weeks at temperatures about 23° C. to 25° C. Root description.—Fibrous; typically light brown 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.—Freely branching; medium density. Plant description: Plant and growth habit.—Upright plant habit; vigorous growth habit; freely branching habit; suitable for hanging baskets and garden plantings. Plant height.—About 40 cm. Plant diameter.—About 15 cm. Lateral branch description.—Length: About 14.3 cm. Diameter: About 1.7 mm. Internode length: About 2 cm. Strength: Strong, flexible. Texture: Smooth, glabrous. Color, developing: Close to 144A. Color, fully developed: Close to 199A. Leaf description: Arrangement and quantity.—Decussate, simple; about five to eight per lateral branch. Length.—About 5.9 cm. Width.—About 3.1 cm. Shape.—Elliptic. Apex.—Acuminate. Base.—Rounded. Margin.—Entire; not undulate to slightly undulate. Texture and luster, upper and lower surfaces.—Smooth, glabrous; slightly glossy. Venation pattern.—Pinnate, reticulate. Color.—Developing leaves, upper surface: Close to 146B. Developing leaves, lower surface: Close to 138A. Fully expanded leaves, upper surface: Close to 137B; venation, close to 138A. Fully expanded leaves, lower surface: Close to 199B; venation, close to 138B. Petioles.—Length: About 5 mm. Diameter: About 1.9 mm. Texture, upper and lower surfaces: Smooth, glabrous. Color, upper and lower surfaces: Close to 138A. Flower description: Flower type and habit.—Single salverform flowers; flowers face mostly upright to outwardly; freely flowering habit with about three to five flowers per axil. Natural flowering season.—Early flowering habit, plants begin flowering about six weeks after planting rooted cuttings; long flowering period, plants flower continuously from summer until late autumn in Japan. Flower longevity on the plant.—About seven to ten days; flowers not persistent. Fragrance.—None detected. Flower buds.—Height: About 3.3 cm. Diameter: About 4.9 mm. Shape: Rhombic. Color: Proximally, close to 149B and distally, close to 50B. Flowers.—Appearance: Salverform; flared trumpet, corolla fused and five-parted; flowers roughly star-shaped. Diameter: About 5.7 cm. Depth (length): About 3.4 cm. Throat diameter: About 8 mm. Tube length: About 1.1 cm. Tube diameter, proximally: About 3 mm. Corolla.—Quantity and arrangement: Five petals arranged in a single whorl and fused towards the base into an elongated tube; petal lobes not imbricate. Petal lobe length: About 2.6 cm. Petal lobe width: About 1.7 cm. Petal lobe shape: Spatulate, asymmetrical. Petal lobe apex: Acuminate. Petal lobe margin: Entire; not undulate. Petal lobe texture and luster, upper and lower surfaces: Smooth, glabrous; velvety; matte. Throat texture: Smooth, glabrous; velvety. Tube texture: Smooth, glabrous; velvety. Color: Petal lobe, when opening, upper surface: Close to 157A heavily overlain with close to 61D. Petal lobe, when opening, lower surface: Close to N57B and N57D. Petal lobe, fully opened, upper surface: Brighter than 45B; venation, similar to lamina; color does not change with subsequent development. Petal lobe, fully opened, lower surface: Close to N57B and N58C; venation, similar to lamina; color does not change with subsequent development. Throat: Proximally, close to 17B and distally, close to 13. Tube: Proximally, close to 150C and distally, close to 58B and 150C; at the base, close to 60C and 145C. Calyx.—Quantity and arrangement: Five sepals arranged in a single whorl, fused at the base; calyx, star-shaped. Sepal length: About 8.6 mm. Sepal width: About 2.4 mm. Sepal shape: Lanceolate. Sepal apex: Acute. Sepal margin: Entire. Sepal texture, upper and lower surfaces: Smooth, glabrous. Sepal color, upper and lower surfaces: Proximally, close to 142A and distally, close to 63A. Peduncles.—Length: About 3.5 cm. Diameter: About 2.1 mm. Texture: Smooth, glabrous. Aspect: Mostly upright. Color: Close to 138A. Pedicels.—Length: About 1.3 cm. Diameter: About 2.1 mm. Texture: Smooth, glabrous. Aspect: Upright to outwardly. Color: Close to 180B. Reproductive organs.—Stamens: Quantity and arrangement: Typically five; filaments fused to corolla; anthers, connivent. Anther size: About 2 mm by 6.6 mm. Anther shape: Lanceolate. Anther color: Close to 13B. Pollen amount: None observed. Pistils: Quantity: Typically one. Pistil length: About 1.2 cm. Style color: Close to 142D. Stigma shape: Conical. Stigma color: Close to 145C. Ovary color: Close to 142B. Seeds and fruits.—To date, seed and fruit production have not been observed on plants of the new Mandevilla. Pathogen & pest resistance: To date, plants of the new Mandevilla have not been noted to be resistant to pathogens and pests common to Mandevilla plants. Garden performance: Plants of the new Mandevilla have been observed to tolerate wind, rain and temperatures ranging from about 4° C. to about 30° C.