<i>Saxifraga </i>plant named ‘SH 1925’

Abstract

A new and distinct cultivar of Saxifraga plant named ‘SH 1925’, characterized by its upright to outwardly spreading and mounded plant habit; moderately vigorous to vigorous growth habit; dark green-colored leaves; freely flowering habit; and purplish pink and purplish red-colored flowers that are held above the foliar plane.

Claims

1. A new and distinct Saxifraga plant named ‘SH 1925’ as illustrated and described.

Description

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

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

(2) The photograph on the first sheet (FIG. 1) is a side perspective view of a typical flowering plant of ‘SH 1925’ grown in a container.

(3) The photograph on the second sheet (FIG. 2) is a close-up view of a typical flowering plant of ‘SH 1925’.

DETAILED BOTANICAL DESCRIPTION

(4) The aforementioned photographs and following observations, measurements and values describe plants grown during the autumn in 12-cm containers in a glass-covered greenhouse in Glandorf, Germany and under cultural practices typical of commercial Saxifraga production. During the production of the plants, day temperatures ranged from 18° C. to 28° C. and night temperatures ranged from 14° C. to 20° C. Plants were six months old when the photographs and the 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: Saxifraga cortusifolia ‘SH 1925’. Parentage: Female, or seed, parent.—Proprietary selection of Saxifraga cortusifolia disclosed as code number 2013-112, not patented. Male, or pollen, parent.—Proprietary selection of Saxifraga cortusifolia disclosed as code number 2013-468, not patented. Propagation: Type.—In vitro axillary meristem culture. Time to produce a rooted young plant, summer.—About 35 to 42 days at temperatures about 22° C. to 24° C. Time to produce a rooted young plant, winter.—About 38 to 45 days at temperatures about 20° C. to 24° C. Root description.—Fine, 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.—Moderately freely branching; sparse to medium density. Plant description: Plant and growth habit.—Herbaceous perennial; upright to outwardly spreading and mounding plant habit with flowers held above the foliar plane; overall plant shape, flattened globular; moderately vigorous to vigorous growth habit and moderate growth rate. Plant height, soil level to top of foliar plane.—About 13.9 cm. Plant height, soil level to top of floral plane.—About 20.9 cm. Plant diameter (area of spread).—About 28.5 cm. Leaf description: Arrangement.—Leaves arranged in a basal rosette; alternate and single. Length.—About 5 cm. Width.—About 6.1 cm. Shape.—Reniform in outline; palmately lobed. Apex.—Broadly acute. Base.—Truncate to shallowly hastate, lobes free. Margin.—Shallowly dentate and palmately lobed with about seven or occasionally nine lobes per leaf; sinuses shallow in depth and divergent. Texture and luster, upper surface.—Smooth, glabrous; matte to slightly glossy. Texture and luster, lower surface.—Sparsely pubescent; moderately glossy to glossy. Venation pattern.—Pinnate. Color.—Developing leaves, upper surface: Darker than a blend of 139A and 147A. Developing leaves, lower surface: Close to 187C. Fully developed leaves, upper surface: Darker than a blend of 139A and N189A; lobe margins, tinged with close to 200B to 200C; venation, darker than a blend of 139A and N189A tinged with close to 200B. Fully developed leaves, lower surface: Close to 187B; venation, close to 182B to 182C. Petioles.—Length: About 10.3 cm. Diameter: About 4 mm. Strength: Weak. Texture and luster, upper and lower surfaces: Smooth, glabrous; slightly glossy. Color, upper surface: Close to 187A. Color, lower surface: Close to 187B. Stipules.—Quantity and arrangement: Two at the base of each petiole. Length: About 1.2 cm. Width: About 6 mm. Shape: Reniform with fimbrate apices and margins. Color, upper and lower surfaces: Close to 187C; fimbrate apices and margins, close to 187D. Flower description: Flower shape and habit.—Rotate flowers arranged in terminal compound corymbs; freely flowering habit with about 45 flowers per inflorescence and about 600 flowers developing per plant; flowers face mostly upright to slightly outwardly. Fragrance.—None detected. Natural flowering season.—Plants begin flowering about six months after planting; plants flower naturally during the autumn in Germany. Flower longevity on the plant.—About two weeks; flowers persistent. Flower buds.—Length: About 3 mm. Diameter: About 2.5 mm. Shape: Broadly ovate. Texture and luster: Smooth, glabrous; slightly glossy. Color: Immature petals, close to 61B, and immature sepals, close to 183A. Inflorescence height (including peduncle).—About 20.2 cm. Inflorescence diameter.—About 10.2 cm. Flower diameter.—About 1.7 cm by 1.9 cm. Flower depth (height).—About 6 mm. Petals.—Quantity and arrangement: About five, occasionally six, arranged in a single whorl; upper three or four petals are smaller than lower one or two petals. Length, upper petals: About 6 mm to 8 mm. Width, upper petals: About 3 mm to 6 mm. Length, lower petals: About 1.2 cm to 1.7 cm. Width, lower petals: About 5 mm to 8 mm. Shape, upper petals: Elliptic to ovate. Shape, lower petals: Narrowly elliptic to oblanceolate. Apex, upper and lower petals: Acute. Base, upper and lower petals: Attenuate. Margin, upper and lower petals: Mostly entire to slightly serrate; not undulate. Texture and luster, upper and lower petals, upper and lower surfaces: Smooth, glabrous; slightly velvety; matte. Color, upper and lower petals: When opening, upper surface: Close to 59D; venation, close to 59D. When opening, lower surface: Close to 63C; venation, close to 61C. Fully opened, upper surface: Close to 65A; towards the apex and margins, close to 64C; venation, similar to lamina colors; with subsequent development, color becoming closer to 64B to 64C. Fully opened, lower surface: Close to 70D; towards the apex and margins, close to 61C; venation, close to 61C; with subsequent development, color becoming closer to 64C to 64D. Sepals.—Quantity and arrangement: Five, arranged in a single whorl. Length: About 4 mm. Width: About 2 mm. Shape: Ovate. Apex: Acute. Base: Broadly cuneate. Margin: Entire. Texture and luster, upper surface: Smooth, glabrous; matte. Texture and luster, lower surface: Smooth, glabrous; moderately glossy. Color: When opening, upper surface: Close to 147C; towards the apex and margins, close to 183A. When opening, lower surface: Close to 183A. Fully opened, upper surface: Close to 147C; towards the apex and margins, close to N186C. Fully opened, lower surface: Close to N186C. Peduncles.—Length: About 18.5 cm. Diameter: About 3 mm. Aspect: About 20° from vertical; secondary peduncles, about 50° from main peduncle axis. Strength: Moderately weak. Texture and luster: Sparsely pubescent; moderately glossy. Color: Close to a blend of 183A and 187C. Pedicels.—Length: About 1.1 cm. Diameter: About 0.5 mm. Aspect: About 20° from peduncle axis. Strength: Moderately strong. Texture and luster: Sparsely pubescent; slightly glossy. Color: Close to 152A to 152B. Reproductive organs.—Stamens: Quantity per flower: About ten. Filament length: About 3.5 mm. Filament color: Close to 186D. Anther shape: Double reniform. Anther size: About 0.5 mm by 0.5 mm. Anther color: Close to 187B. Pollen amount: Scarce. Pollen color: Close to 26B. Pistils: Quantity per flower: About two. Pistil length: About 2 mm. Stigma diameter: About 0.2 mm. Stigma shape: Club-shaped. Stigma color: Close to 157A. Style length: About 1.8 mm. Style color: Close to 145C. Ovary color: Close to 150A to 150B. Floral bracts: Quantity per flower: One. Length: About 7 mm. Diameter: About 2 mm. Shape: Narrowly oblong to lanceolate. Apex: Bluntly acute. Base: Broadly cuneate. Margin: Mostly entire, occasionally slightly dentate. Color, upper surface: Close to 200A. Color, lower surface: Close to a blend of N186C and 200A. Seeds and fruits: To date, seed and fruit development have not been observed on plants of the new Saxifraga. Temperature tolerance: Plants of the new Saxifraga have been observed to tolerate temperatures ranging from about −7° C. to about 36° C. and to be suitable for USDA Hardiness Zones 8b through 11. Pathogen & pest resistance: To date, plants of the new Saxifraga have not been observed to be resistant to pathogens and pests common to Saxifraga plants.