<i>Philadelphus </i>plant named ‘SMNPVB’

Abstract

A new and distinct cultivar of Philadelphus plant named ‘SMNPVB’, characterized by its compact, upright to somewhat outwardly spreading and uniformly mounding plant habit; moderately vigorous growth habit and rapid growth rate; freely branching habit; dense and bushy appearance; green and greenish yellow variegated leaves; numerous fragrant white-colored flowers; and good garden performance.

Claims

1. A new and distinct Philadelphus plant named ‘SMNPVB’ as illustrated and described.

Description

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

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

(2) The photograph on the first sheet (FIG. 1) is a side perspective view of a typical flowering plant of ‘SMNPVB’.

(3) The photograph on the second sheet (FIG. 2) is close-up view of typical leaves of ‘SMNPVB’.

(4) The photograph on the third sheet (FIG. 3) is a close-up view of typical flowers of ‘SMNPVB’.

DETAILED BOTANICAL DESCRIPTION

(5) The aforementioned photographs and following observations, measurements and values describe plants grown in the spring in three-gallon containers in a polypropylene-covered shadehouse in Grand Haven, Mich. and under cultural practices typical of commercial Philadelphus 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 three years old when the photographs and the description were taken. In the 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: Philadelphus hybrida ‘SMNPVB’. Parentage: Naturally-occurring whole plant mutation of an unnamed proprietary selection of Philadelphus hybrida, not patented. Propagation: Type.—By softwood stem cuttings. Time to initiate roots, summer.—About two weeks at temperatures about 18° C. to 27° C. Time to produce a rooted young plant, summer.—About two months at temperatures about 18° C. to 27° C. Root description.—Thick to fine; fibrous; typically white to brown in color, actual color of the roots is dependent on substrate composition, water quality, fertilizer, substrate temperature and physiological age of roots. Rooting habit.—Freely branching; dense. Plant description: Plant form and growth habit.—Perennial deciduous shrub; compact, upright to somewhat outwardly spreading and uniformly mounding plant habit; moderately vigorous growth habit and rapid growth rate. Branching habit.—Freely branching habit; more than ten lateral branches develop per plant; pinching enhances lateral branch development. Plant height.—About 40 cm. Plant diameter (area of spread).—About 35 cm. Lateral branch description: Length.—About 35 cm. Diameter.—About 7 mm. Internode length.—About 3 cm. Aspect.—Erect to about 20° from vertical. Strength.—Strong. Texture.—When developing, slightly pubescent; with development becoming smooth and glabrous and when woody, rough. Color, developing, upper and lower surfaces.—Close to 144B. Color, developed, lower surface.—Close to N199C. Leaf description: Arrangement.—Opposite, simple. Length.—About 5.5 cm. Width.—About 3.5 cm. Shape.—Elliptic. Apex.—Acute to acuminate. Base.—Cuneate. Margin.—Serrulate. Texture, upper surface.—Somewhat coarse; glabrous. Texture, lower surface.—Somewhat coarse with pronounced venation; mostly glabrous with pubescence along venation. Venation pattern.—Pinnate. Color.—Developing leaves, upper surface: Variegated with random sectors and splotches, close to 137A and 153D. Developing leaves, lower surface: Close to 147B with variegation pattern of upper surface is visible. Fully expanded leaves, upper surface: Variegated with random sectors and splotches, close to 137A and 4C; venation, close to 144B. Fully expanded leaves, lower surface: Close to 147B with variegation pattern of upper surface is visible; venation, close to 144B. Petioles.—Length: About 1 cm. Diameter: About 1.5 mm. Texture, upper and lower surfaces: Slightly pubescent. Color, upper and lower surfaces: Close to 144B. Flower description: Flower appearance and arrangement.—Rotate flowers arranged in terminal cymes; freely flowering habit with about three to nine flowers developing per inflorescence with more than 200 flowers developing per plant during the flowering season; flowers face mostly upright. Fragrance.—Slightly fragrant; sweet and pleasant, citrus-like. Natural flowering season.—Plants flower continuously during the spring in Michigan; flowers not persistent. Inflorescence height.—About 4 cm. Inflorescence diameter.—About 5 cm. Flower diameter.—About 4 cm by 4 cm. Flower depth.—About 1 cm. Flower buds.—Length: About 8 mm. Diameter: About 8 mm. Shape: Ovoid. Color: Close to 144B and N144D. Petals.—Quantity and arrangement: Four or five arranged in a single whorl. Length: About 2 cm. Width: About 1.5 cm. Shape: Elliptic. Apex: Obtuse. Base: Truncate. Margin: Entire. Texture, upper and lower surfaces: Smooth; soft and delicate; glabrous. Color: When opening, upper and lower surfaces: Close to NN155B; median streaks, close to 157B. Fully opened, upper and lower surfaces: Close to NN155B; median streaks, close to 157B. Petaloids.—Quantity and arrangement: About 4 to 20 arranged in one to several whorls. Length: About 1.5 cm to 2 cm. Width: About 5 mm to 10 mm. Shape: Irregular, roughly narrowly elliptic. Apex: Obtuse. Base: Attenuate. Margin: Entire. Texture, upper and lower surfaces: Smooth; soft and delicate; glabrous. Color: When opening and fully opened, upper surface: Close to NN155B; towards the apex, close to 157B. When opening and fully opened, lower surface: Close to NN155B. Sepals.—Quantity and arrangement: Four to five in a single whorl. Length: About 6 mm. Width: About 4 mm. Shape: Teardrop-shaped. Apex: Acuminate. Base: Truncate. Margin: Entire. Texture, upper and lower surfaces: Slightly pubescent. Color, upper and lower surfaces: Close to 144B and N144D. Peduncles.—Length: About 2 cm. Diameter: About 2 mm. Aspect: Mostly erect. Strength: Strong. Texture: Smooth, glabrous. Color, upper and lower surfaces: Close to 144B. Pedicels.—Length: About 1 cm. Diameter: About 1 mm. Aspect: About 30° to 45° from peduncle axis. Strength: Strong; flexible. Texture: Smooth, glabrous. Color, upper and lower surfaces: Close to 144B. Reproductive organs.—Stamens: Quantity per flower: About 30; dithecal; basifixed. Filament length: About 1 cm. Filament color: Close to NN155B. Anther length: About 1.5 mm. Anther shape: Rounded. Anther color: Close to 12B. Pollen amount: Scarce. Pollen color: Close to 12B. Pistils: Quantity per flower: Four. Pistil length: About 7 mm. Stigma shape: Oblong. Stigma color: Close to 157A. Style length: About 6 mm. Style color: Close to 157A. Ovary color: Close to 145C. Fruits and seeds.—To date, fruit and seed development have not been observed on plants of the new Philadelphus. Garden performance: Plants of the new Philadelphus have been observed to have good garden performance. Pathogen & pest resistance: To date, plants of the new Philadelphus have not been shown to be resistant to pathogens and pests common to Philadelphus plants.