<i>Euphorbia </i>plant named ‘Bonpri 1482’

Abstract

A new and distinct cultivar of Euphorbia plant named Bonpri 1482, characterized by its upright and mounded plant habit; vigorous growth habit; freely branching habit; large inflorescences with bright purplish red-colored flower bracts that resist fading; and good post-production longevity.

Claims

1. A new and distinct Euphorbia plant named Bonpri 1482 as illustrated and described.

Description

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

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

(2) The photograph on the first sheet (FIG. 1) is a side perspective view of a typical flowering plant of Bonpri 1482 grown in a container.

(3) The photograph on the second sheet (FIG. 2) is a close-up view of a typical inflorescences of Bonpri 1482.

DETAILED BOTANICAL DESCRIPTION

(4) Plants used in the aforementioned photographs and described herewith in detail were grown during the autumn and early winter in 10.5-cm containers in an outdoor nursery in Higashiomi, Shiga, Japan and under cultural practices typical of commercial Euphorbia production. During the production of the plants, day temperatures averaged 23 C and night temperatures averaged 13 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: Euphorbia pulcherrima Willd. ex Klotzsch X Euphorbia cornastra Bonpri 1482. Parentage: Naturally-occurring whole plant mutation of a proprietary selection of Euphorbia pulcherrima Willd. ex Klotzsch X Euphorbia cornastra identified as code number 1095, not patented. Propagation: Type.Terminal vegetative cuttings. Time to initiate roots, summer.About ten days at temperatures about 20 C to 21 C. Time to initiate roots, winter.About twelve days at temperatures about 20 C to 21 C. Time to produce a rooted young plant, summer.About 24 days at temperatures about 20 C to 21 C. Time to produce a rooted young plant, winter.About 28 days at temperatures about 20 C to 21 C. Root description.Fibrous; typically white in color, actual color of the roots is dependent on substrate composition, water quality, fertilizers, substrate temperature and physiological age of roots. Rooting habit.Freely branching; medium density. Plant description: Plant habit and form.Upright and mounded plant habit; inverted triangle; inflorescences positioned above the foliar plane; vigorous growth habit. Plant height.About 37.3 cm. Plant diameter or spread.About 46 cm. Lateral branch description.Branching habit: Freely branching habit, about six lateral branches develop per plant. Length: About 25.5 cm. Diameter: About 6.9 mm. Internode length: About 3.1 cm. Aspect: Mostly upright to somewhat outward. Strength: Moderately strong. Texture and luster: Smooth, glabrous; glossy. Color: Close to 144A. Leaf description.Arrangement: Alternate, simple. Length: About 9 cm. Width: About 5.6 cm. Shape: Lanceolate. Apex: Acute. Base: Rounded. Margin: Mostly entire, occasionally with few shallow lobes. Venation pattern: Pinnate, reticulate. Texture and luster, upper surface: Smooth, glabrous; matte. Texture and luster, lower surface: Rough, glabrous; matte. Color: Developing leaves, upper surface: Close to 147A. Developing leaves, lower surface: Close to 147B. Fully developed leaves, upper surface: Close to 139A; venation, close to 138A. Fully developed leaves, lower surface: Close to 137B; venation, close to 138A. Petioles: Length: About 3.3 cm. Diameter: About 2.6 mm. Texture, upper and lower surfaces: Smooth, glabrous. Color, upper and lower surfaces: Close to 144A. Inflorescence description: Inflorescence type and habit.Inflorescences are compound corymbs of cyathia with numerous flower bracts subtending the cyathia; inflorescences positioned above the foliar plane. Quantity of inflorescences.One per lateral branch, about nine inflorescences develop per plant. Inflorescence diameter.About 23.3 cm. Inflorescence height.About 6.2 cm. Fragrance.None detected. Natural flowering season.Plants typically flower during the autumn and winter in Japan; inflorescence initiation and development can also be induced under artificial long nyctoperiod and short photoperiod conditions; early flowering response, plants flower about 50 to 56 days under natural season or photoinductive conditions in Japan. Post-production longevity.Good post-production longevity; plants of the new Euphorbia maintain good substance and bract color for about six to eight weeks. Flower bracts.Quantity per inflorescence: About 23. Length, largest bracts: About 11.3 cm. Width, largest bracts: About 6.4 cm. Aspect: Mostly horizontal and flat. Shape: Lanceolate. Apex: Acute. Base: Obtuse. Margin: Entire. Texture and luster, upper and lower surfaces: Smooth, glabrous; matte. Venation pattern: Pinnate, reticulate. Color: Transitional bracts, upper surface: Random sectors, close to NN137A and 53C. Transitional bracts, lower surface: Random sectors, close to 138B and 64D. Developing bracts, upper surface: Close to N57A. Developing bracts, lower surface: Close to N58B. Fully expanded bracts, upper surface: Close to N57B; venation, close to N57B; flower bracts resist fading with subsequent development. Fully expanded bracts, lower surface: Close to N57C; venation, close to 145C; flower bracts resist fading with subsequent development. Flower bract petioles: Length: About 2.3 cm. Diameter: About 1.9 mm. Texture, upper and lower surfaces: Smooth, glabrous. Color, upper and lower surfaces: Close to 144B and N57B. Cyathia.Quantity per corymb: About 22. Diameter of cyathia cluster: About 3.4 cm. Height, individual cyathium: About 6.6 mm. Diameter, individual cyathium: About 6 mm. Shape, individual cyathium: Globose. Color: Distally, close to 47A and proximally, close to 145A. Nectaries: Quantity per cyathium: About eleven. Size: About 2.1 mm by 3.9 mm. Texture: Smooth, glabrous. Color: Close to 7A. Peduncles.Length: About 1.7 mm. Diameter: About 2 mm. Texture, upper and lower surfaces: Smooth, glabrous. Aspect: Mostly upright. Color, upper and lower surfaces: Close to 145A. Reproductive organs.To date, stamen and pistil development have not been observed on plants of the new Euphorbia. Seeds and fruits.To date, seed and fruit development have not been observed on plants of the new Euphorbia. Pathogen & pest resistance: To date, plants of the new Euphorbia have not been shown to be resistant to pathogens and pests common to Euphorbia plants. Temperature tolerance: Plants of the new Euphorbia have been observed to tolerate temperatures ranging from about 8 C to about 40 C.