<i>Sedum </i>plant named ‘Dolseb’

Abstract

A new cultivar of Sedum plant named ‘Dolseb’ that is characterized by its upright, strong stems with suitability for use in large containers, its narrow leaves, its dark burgundy foliage, its well-branched growth habit, its resistance to mildew, its flowers that are red-pink in color and bloom in August to October in France, and its plant height of 40 cm.

Claims

1. A new and distinct variety of Sedum plant named ‘Dolseb’ as described and illustrated herein.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The accompanying color photographs illustrate the overall appearance and distinct characteristics of the new Sedum. The photographs were taken of a plant about 2 years in age as grown in a garden in Geldermalsen, The Netherlands.

(2) The photograph in FIG. 1 provides a view of the plant habit and foliage coloration of ‘Dolseb’ in summer.

(3) The photograph in FIG. 2 provides a view of the inflorescences of ‘Dolseb’ in June.

(4) The photograph in FIG. 3 provides a view of the upper surface of a leaf of ‘Dolseb’.

(5) The 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 Sedum.

DETAILED BOTANICAL DESCRIPTION

(6) The following is a detailed description of the new cultivar as observed on 2-year-old plants of ‘Dolseb’ as field grown in 17-cm containers in Geldermalsen, The Netherlands. The phenotype of the new cultivar may vary with variations in environmental, climatic, and cultural conditions, as it has not been tested under all possible environmental conditions. The color determination is in accordance with The 2015 Colour Chart of The Royal Horticultural Society, London, England, except where general color terms of ordinary dictionary significance are used. General description: Blooming period.—August to October in France. Plant type.—Herbaceous perennial. Plant habit.—Upright, well-branched, strong stems. Height and spread.—Average of 40 cm in height and about 50 cm in spread as a 2-year-old plant in the landscape. Hardiness.—At least hardy in U.S.D.A. Zones 5 to 9. Disease and pests.—Resistance to powdery mildew has been shown (typically caused by Erysiphe sedi, Eysiphe umbilici or Golvinomyces orontii). Root description.—Fibrous, 155A. Propagation.—Stem cuttings. Growth rate.—Moderately vigorous. Rooting.—Roots initiate in about 2 weeks, a young plant can be produced in a about 6 weeks in spring and summer. Stem description: Stem shape.—Rounded. Stem size.—An average of 23 cm in length and 5 mm in width. Internode length.—Average of 4 cm. Stem color.—Young and mature main branches; 187A, suffused with 183A, young and mature lateral branches; 187A. Stem surface.—Slightly glossy. Branching habit.—Average angle of 75°, strong, average of 3 main branches, an average of 3 branches per main branch. Foliage description: Leaf shape.—Ovate, elliptical. Leaf division.—Simple. Leaf arrangement.—Alternate. Leaf base.—Truncate. Leaf apex.—Rounded. Leaf venation.—Pinnate, color of midrib upper surface N186A, color of midrib lower surface 183A, secondary veins not visible. Leaf margins.—Irregularly and bluntly dentate. Leaf attachment.—Sessile. Leaf orientation.—Outward. Leaf texture.—Thick, succulent. Leaf surface.—Both surfaces are smooth and glabrous. Leaf color.—Young and mature upper surface; closest to N186A, margins and base 183A, young and mature lower surface; 137C, margins and base suffused with 183A. Leaf size.—Average of 5.2 cm in length, 3.3 cm in width, and 1 mm in width. Flower description: Inflorescence type.—Compound cyme. Inflorescence size.—An average of 8 cm in diameter and height. Lastingness of inflorescence.—At least one month. Flower type.—Perfect, spreading, 5-starred. Flower number.—An average of 600 flowers per plant. Flower fragrance.—None. Flower buds.—Lanceolate in shape, 3 mm length and 3.5 mm in width, glabrous surface, color; a blend of 53B, 53C, and 155B. Flower size.—About 6 mm in depth and 5 mm in diameter. Peduncles.—Round in shape, an average of 3.5 cm in length and 3.5 mm in diameter, surface is glabrous, strong, 183A in color. Pedicels.—Round in shape, an average of 3.5 mm in length and 1 mm in diameter, surface is glabrous, strong, 183A in color. Calyx.—5-parted, fused at base, 1.5 mm in length, 2.5 mm in width. Sepals.—5, average of 1.5 mm in length, 1 mm in width, campanulate in shape, entire margin, acute apex, fused base, both surfaces glabrous, both surfaces 137B in color and suffused with 183A. Petals.—5, spreading, 4 mm in length and 2 mm in width, lanceolate in shape, fused base, acute apex, entire margin, color; upper and lower surface when opening and fully open; base 155B, center and top 53C. Reproductive organs: Pistils.—5, showy, 4 mm in length 1 cm in diameter, stigma; minute, N155C in color, style; ovate, rounded in shape, cone like, and N74A in color, ovary; small, single celled and translucent in color. Stamens.—10, about 3 mm in length, 2 mm in diameter, filament; very fine, NN155D in color, anther; club shaped, 0.7 mm in length, 0.6 mm in width, N74A in color, pollen was not observed. Fruit.—Fruit and seed production has not been observed to date.