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<i>Acer </i>tree named ‘Volcano’

PP032542 · 2020-12-01

    Inventors

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    International classification

    Abstract

    A new cultivar of Acer truncatum tree named Volcano that is characterized by its compact growth habit reaching about 3 m in height, its broad obovate to rounded plant shape, its young foliage that is reddish pink in color with yellow veins, and its mature foliage that is gradually changes to all yellow-green in color.

    Claims

    1. A new and distinct cultivar of Acer truncatum tree named Volcano as herein illustrated and described.

    Description

    BRIEF DESCRIPTION OF THE DRAWINGS

    (1) The accompanying colored photographs illustrate the overall appearance and distinct characteristics of a 14-month-old tree of the new cultivar as grown in a cold greenhouse in a 15-cm container in Hazerswoude-Dorp, The Netherlands.

    (2) FIG. 1 provides an overall view of the foliage and plant habit of Volcano.

    (3) The photograph in FIG. 2 provides a close-up view of the young foliage of Volcano.

    (4) The photograph in FIG. 3 provides a close-up view of the mature leaves of Volcano.

    (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 Acer.

    DETAILED BOTANICAL DESCRIPTION

    (6) The following is a detailed description of 14-month-old trees of the new cultivar as grown in a cold greenhouse in 15-cm containers in April in Hazerswoude-Dorp, 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: Plant type.Deciduous tree. Plant habit.Compact with an obovate to rounded plant shape. Height and spread.An average of 31 cm in height and 25.8 cm in spread as a 14-month-old tree and reaches about 3 m in height and 2.5 m in spread as a mature plant in the landscape. Cold hardiness.At least to U.S.D.A. Zone 5. Diseases and pests.No susceptibility or resistance to diseases or pest has been observed. Root description.Fibrous, freely branched. Propagation.Grafting. Root development.An average of 14 months from a graft to a small marketable plant. Growth rate.Moderately vigorous. Branch description: Stem shape.Round. Stem size.Main stem; an average of 2 cm in diameter at soil level, lateral branches; an average of 8.8 cm in length and 2 mm in diameter. Stem surface.Slightly glossy. Stem color.Young; 178B, mature; 144B, older stems; 199B to 199C. Stem strength.Strong. Stem aspect.An average angle of 25 to vertical. Internode length.An average of 2.6 cm. Branching.Well-branched, 1 main stem and 8 secondary branches per main branch. Foliage description: Leaf shape.Palmately lobed, reniform to orbicular in outline. Leaf division.Simple. Leaf base.Truncate. Leaf apex.Acute, outer tip mucronate. Leaf fragrance.None. Leaf venation.Palmate, young leaves upper surface color is 149B, lower surface color is 145A, mature upper surface color is 146C to 146D, lower surface color is 147D. Leaf quantity.An average of 8 (4 pairs) per lateral branch. Leaf margins.Palmately 5-lobed, lobe margins serrate with 1 to 2 teeth per lobe, sinus depth deep, sinus orientation is convergent. Leaf arrangement.Opposite. Leaf aspect.Flat, leaves in an average angle of 80 to lateral branch. Leaf attachment.Petiolate. Leaf surface.Texture of both surfaces glabrous and smooth, upper surface luster matte, lower surface luster moderately glossy. Leaf size.Average of 6.8 cm in length and 7.9 cm width. Leaf color.Young leaves upper surface; 145A, leaf tinged towards the margins with 179B, young leaves lower surface; 152D, towards the margins 165B to 165C and 166C to 166D, mature leaves upper surface; 144C, around veins 154D, mature lower surface; 145B to 145C, fall color; both surfaces similar to mature foliage with some tinging of the 179B on the upper surface and 165B on the lower surface. Petioles.Average of 4.7 cm in length and 1 mm in diameter, texture is smooth and glabrous, glossy luster, strong, upper surface side color 180A, changing to 179B to 179C at the distal end, lower surface side color 179B, changing to 150B to 150C at the distal end, 145A proximal end. Stipules.None. Inflorescence description: None observed to date. Fruit and seed: None observed to date.