Geum Plant Named 'MACGEU050'

Abstract

MACGEU050 is a new and distinctive variety of Geum hybrid which is characterized by a clump-forming growth habit, yellow semi-double flowers held on compound cymes above the foliage, and a long bloom period. The new variety propagates successfully by stem cuttings and tissue culture and has shown to be uniform and stable in the resulting generations from asexual propagation.

Claims

1. A new and distinct variety of Geum hybrid plant named MACGEU050, substantially as described and illustrated herein.

Description

BRIEF DESCRIPTION OF THE FIGURES

[0010] FIG. 1 shows, as nearly true as it is reasonably possible to make the same in color illustrations of this type, the typical foliage and growth characteristics of the new cultivar, MACGEU050. The plant shown is approximately three-month-old, potted into a 19 cm nursery container, grown outdoors in Kirkcudbright, Scotland at a commercial nursery.

[0011] FIG. 2 shows, as nearly true as it is reasonably possible to make the same in color illustrations of this type, the typical foliage of the claimed plant.

[0012] FIG. 3 shows, as nearly true as it is reasonably possible to make the same in color illustrations of this type, the typical flower of the claimed plant.

BOTANICAL DESCRIPTION OF THE PLANT

[0013] The following is a detailed botanical description of a new and distinct variety of Geum known as MACGEU050, based upon observations of 3-month-old greenhouse-grown plants grown in Kirkcudbright, Scotland. Plants were grown using conventional greenhouse production protocols for Geum plants including regular overhead irrigation, fertigation feeding, and full sun to partial shade exposure. With the exception of chemical control for thrips insects, no other chemical treatments were given to the plants. Observation data was recorded in July of 2024.

[0014] Those skilled in the art will appreciate that certain characteristics will vary with older or, conversely, with younger plants. MACGEU050 has not been observed under all possible environmental conditions. Where dimensions, sizes, colors and other characteristics are given, it is to be understood that such measurements are approximations or averages set forth as accurately as practicable. The phenotype of the variety may differ from the descriptions set forth herein with variations in environmental, climactic and cultural conditions. Color notations are based on The Royal Horticultural Society Colour Chart, The Royal Horticultural Society, London, 2007 edition.

[0015] A botanical description of MACGEU050 and comparisons with the seed parent and most similar variety of common knowledge are provided below. [0016] General plant description: [0017] Growth habit.A clump-forming herbaceous perennial with flowering stems arising from the base and no lateral branching present. [0018] Height.13.5 cm to the top of the foliar plane; 19.9 cm to the top of the floral plane. [0019] Spread.27.4 cm. [0020] Plant vigor.Moderate. [0021] Growth rate.Moderate. [0022] Propagation.Meristematic tissue culture. [0023] Time to produce flowering plant from rooted cutting.At 8 to 10 degrees Celsius, approximately 8 to 10 weeks from a tissue culture to a saleable 17 cm pot; no pinching is required. [0024] Pest resistance and susceptibility.Not any more or less susceptible to pests or diseases known to effect Geum. [0025] Environmental tolerances.Adapt to, at least, USDA Zones 5 to 9 and temperatures ranging from minus 25 degrees Celsius to 35 degrees Celsius; low to moderate tolerance to rain; moderate to high tolerance to wind. [0026] Root system: Thin, fibrous, and freely branched. [0027] Stem: [0028] Branching habit.Basally branched; freely branching. [0029] Number of primary (main) stems per plant.16. [0030] Number of secondary (lateral) branches per plant.None. [0031] Appearance and shape.Terete. [0032] Length.13.4 cm. [0033] Diameter.0.2 cm. [0034] Internode length.3.5 cm. [0035] Luster.Slightly glossy. [0036] Aspect.Average angle of 15 degrees from vertical; stems vary from between 0to 30 degrees from vertical. [0037] Strength.Strong. [0038] Color, juvenile.Yellow-green, nearest to RHS 145A. [0039] Color, mature.Yellow-green, nearest to RHS 144A. [0040] Color at internodes.Yellow-green, nearest to RHS 144A. [0041] Pubescence.Densely pubescent; hairs are soft, white RHS NN155D, and 1.0 mm long, on average. [0042] Foliage: [0043] Arrangement.Leaves are borne both basally and on stems; on stems, arrangement is alternate. [0044] Basal leaves.Attachment Petiolate. Division Imparipinnate with an average of 10 leaflets. Leaf shape Compound leaf outline is obovate. Dimensions 15.4 cm long, including petiole, and 5.3 cm in width, on average. Leaf attitude Outward and upward. Leaf aspect Carinate. Leaflets Quantity Typically ranging from 9 to 11 leaflets per leaf. Dimensions, terminal leaflet 4.7 cm long and 5.3 cm wide. Dimensions, lateral leaflets 1.1 cm long and 0.9 cm wide. Shape, terminal leaflet Reniform and trilobate though occasionally five-lobed; deeply cleft to near-parted; divergent; sinus depth is shallow to moderately deep. Shape, lateral leaflets Broad ovate. Apex Abruptly acute. Leaf base Truncate. Leaf margin Serrate. Texture, adaxial and abaxial surfaces Smooth, pubescent. Pubescence, adaxial and abaxial surfaces Soft, strigose hairs with an average length of 1.0 mm; colored near RHS NN155D. Luster, adaxial and abaxial surfaces Matte. Color Juvenile foliage color, adaxial surface Yellow-green, RHS 144A. Juvenile foliage color, abaxial surface Yellow-green, RHS 146D. Mature leaf color, adaxial surface Green, RHS 137D. Mature leaf color, abaxial surface Yellow-green, nearest to a mixture of RHS 144A and 146C. Venation Type Pinnate. Vein color, adaxial surface reen, RHS 137D. Vein color, abaxial surface Yellow-green, RHS 146D. [0045] Petiole.Length 12.2 cm, including rachis. Diameter Average of 0.2 cm. Strength Moderately strong to strong. Color, adaxial surface Green, RHS 143B. Color, abaxial surface Yellow-green, RHS 144B. Texture, adaxial and abaxial surfaces Densely covered with soft hairs; average length of hairs is 1.0 mm; colored white, RHS NN155D. Luster, adaxial surface Matte. Luster, abaxial surface Slightly glossy. Stipules None present. [0046] Leaves borne on the stems.Quantity Approximately 4 leaves per stem. Attachment Petiolate. Division Simple. Leaf shape Trilobate with a broad ovate outline. Lobes Depth of sinuses Deep to nearly parted. Sinus orientation Divergent. Dimensions 4.1 cm long, including petiole, and 3.0 cm in width, on average. Leaf attitude Leaves in an average angle of 45 degrees to the stem. Leaf aspect Flat. Leaf apex Narrow acute to acute. Leaf base Attenuate. Leaf margin Serrate. Texture, adaxial and abaxial surfaces Smooth, pubescent. Pubescence, adaxial and abaxial surfaces Soft, strigose hairs with an average length of 1.0 mm; colored near RHS NN155D. Luster, adaxial and abaxial surfaces Matte. Color Juvenile foliage color, adaxial surface Yellow-green, RHS 144B. Juvenile foliage color, abaxial surface Yellow-green, RHS 144C. Mature leaf color, adaxial surface Green, RHS 137D. Mature leaf color, abaxial surface Yellow-green, nearest to a mixture of RHS 144A and 146C. Venation Type Pinnate. Vein color, adaxial surface Green, RHS 137C. Vein color, abaxial surface Yellow-green, RHS 146D. Petiole Length 1.0 cm. Diameter Average of 1.0 mm. Strength Medium to high. Color, adaxial surface Green, nearest to RHS 143B. Color, abaxial surface Yellow-green, nearest to RHS 144C. Texture, adaxial and abaxial surfaces Densely covered with soft hairs; average length of hairs is 1.0 mm; colored white, RHS NN155D. Luster, adaxial surface Matte. Luster, abaxial surface Slightly glossy. Stipules General Two leafy stipules present at the base of each leaf. Shape Ovate to obovate. Length Average of 7.0 mm. Diameter Average of 4.0 mm. Apex Narrow acute. Base Cuneate. Margins Serrate. Color, adaxial surface Green, nearest to RHS 143B. Color, abaxial surface Yellow-green, nearest to RHS 144C. Texture, adaxial and abaxial surfaces Covered with soft, appressed hairs with an average length of 1.0 mm; colored white, RHS NN155D. [0047] Inflorescence: [0048] Habit.Compound cyme. [0049] Natural flowering season.April to mid-summer in Kirkcudbright, Scotland. [0050] Time to flower or response time.Approximately 9 months. [0051] Dimensions.8.1 cm high, including peduncle, and 6.5 cm in diameter. [0052] Quantity of inflorescence per plant.4, on average. [0053] Quantity of flowers and buds per inflorescence.24, on average. [0054] Peduncles.Length Average of 8.2 cm. Diameter Average of 2.0 mm. Angle Average angle to stem is 30 degrees. Strength Moderately strong to strong. Texture Smooth and densely pubescent; hairs are soft with an average length of 1.0 mm; colored white, RHS 155A. Luster Slightly glossy. Color Yellow-green, RHS 145A, with the upper side tinged greyed-orange, RHS 177A. [0055] Pedicels.Length Average of 3.3 cm. Diameter Average of 0.1 cm. Angle Average angle to peduncle is approximately 10 degrees. Strength Moderately strong. Texture Smooth and densely pubescent; hairs are soft with an average length of 0.75 cm; colored white, RHS NN155D. Luster Slightly glossy. Color Yellow-green, nearest to RHS 144A. [0056] Flower buds: [0057] Shape.Deltoid. [0058] Length.Average of 5 mm. [0059] Diameter.Average of 6 mm. [0060] Texture.Smooth and densely pubescent; hairs are soft with an average length of 0.5 mm; colored white, RHS 155A. [0061] Luster.Matte. [0062] Color.Yellow-green, RHS 154C; immature calyx is yellow-green, nearest to a mixture of RHS 145A and 145B. [0063] Flower: [0064] Shape, type.Rotate; semi-double. [0065] Floriferousness.Moderately free-flowering. [0066] Aspect.Outwardly to slightly upright. [0067] Flower longevity on plant.Approximately ten days. [0068] Persistent or self-cleaning.Self-cleaning. [0069] Fragrance.Non-fragrant. [0070] Diameter.Average of 3.2 cm. [0071] Depth.Average of 1.1 cm. [0072] Calyx.Shape Rotate. Length 0.5 cm. Diameter 1.3 cm. Sepal Arrangement Rotate; one whorl of sepals which alternate between broad sepals and narrow sepals. Quantity 10 unfused sepals; 5 broad sepals and 5 narrow sepals. Broad sepals Shape Deltoid. Aspect Strongly reflexed. Dimensions 0.8 cm long and 0.5 cm wide. Apex Long apiculate. Base Truncate. Margin Entire. Texture, upper surface Smooth; densely covered with soft appressed hairs. Luster, upper surface Very slightly glossy. Texture, lower surface Smooth; densely covered with soft appressed hairs. Luster, lower surface Matte. Color When opening, upper surface Yellow-green, RHS 145B. When opening, lower surface Yellow-green, RHS 145A. Fully opened, upper surface Yellow-green, RHS 145B. Fully opened, lower surface Yellow-green, RHS 145A. Narrow sepals Shape Narrow elliptic. Dimensions 0.2 cm long and 0.1 cm wide. Apex Narrow acute. Base Attenuate. Sepal reflex Slightly reflexed to outwardly. Margin Entire. Texture, upper surface Smooth; densely covered with soft appressed hairs. Luster, upper surface Very slightly glossy. Texture, lower surface Smooth; densely covered with soft appressed hairs. Luster, lower surface Matte. Color When opening, upper surface Yellow-green, RHS 146D. When opening, lower surface Yellow-green, nearest to in between RHS 146C and 146D. Fully opened, upper surface Yellow-green, RHS 146D. Fully opened, lower surface Yellow-green, nearest to in between RHS 146C and 146D. [0073] Petals.Quantity 11, on average. Arrangement Rotate; arranged in three whorls of unfused petals. Length 1.5 cm, on average. Width 1.3 cm, on average. Shape Broad obovate. Apex Emarginate to obtuse. Base Broad acuminate. Margin Entire; slight undulation. Texture and luster, upper surface Glabrous, slightly coriaceous, and matte. Texture and luster, lower surface Glabrous, slightly coriaceous, and matte. Petal color When opening, upper surface Yellow, nearest to RHS 13A. When opening, lower surface Yellow, nearest to RHS 13C. Fully opened, upper surface Yellow, nearest to RHS 13B. Fully opened, lower surface Yellow, nearest to RHS 13C. Petal venation color Fully opened, upper surface Yellow-orange, nearest to RHS 14A. Fully opened, lower surface Yellow, nearest to RHS 11A. [0074] Reproductive organs: [0075] Stamens.Quantity Approximately 150.Anthers Shape Oblong. Dimensions Approximately 0.8 mm long and 0.3 mm wide. Color Yellow-orange, RHS 14A. Filaments Length 4 mm, on average. Color Green-yellow, RHS 1B to 1C, and fading to yellow, RHS 12B to 12C; distal portion fading to RHS 28C to 28D when maturing. Pollen Not detected. [0076] Pistil.Quantity 60, on average. Length 0.6 mm. Style Length 5.5 mm. Color Red, RHS 42D. Stigma Shape Cleft; two-parted. Length 0.5 mm. Diameter 0.8 mm. Color Red, RHS 53A. Ovary Color Yellow-green, RHS 144A. [0077] Seed and fruit: No fruit or seeds have been detected to date. [0078] Comparisons with the parent plants and most similar variety of common knowledge: Plants of the new cultivar MACGEU050 differ from its seed parent, Geum chiloense Lady Strathedon (unpatented), by the characteristics described in Chart 1. The pollen parent is no longer available for comparison.

TABLE-US-00001 CHART 1 Characteristic MACGEU050 Lady Strathedon Petal count. Lower than Lady Higher than Strathedon; MACGEU050; semi-double. double. Bloom period Longer than Lady Shorter than duration. Strathedon; MACGEU050; early spring mid-spring to to mid-summer. late spring.

[0079] Plants of the new cultivar MACGEU050 may be distinguished from the most similar known commercial comparator, Geum Lissanne (not patented), by the characteristics described in Chart 2.

TABLE-US-00002 CHART 2 Characteristic MACGEU050 Lissanne Plant height. Taller than Shorter than Lissanne. MACGEU050. Growth habit. Clumping. Vigorously spreading habit. Bloom period Longer than Shorter than duration. Lissanne; MACGEU050; early spring to mid-spring to mid-summer. late spring.