Euphorbia plant named 'Bonpoiakani'

Abstract

A new and distinct cultivar of Euphorbia plant named Bonpoiakani, characterized by its upright and mounded plant habit; moderately vigorous growth habit; freely branching habit; inflorescences with large intense red-colored flower bracts that resist damage during transportation; relative low temperature tolerance during production; and good post-production longevity.

Claims

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

Description

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

[0026] 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.

[0027] The photograph at the top of the sheet is a side perspective view of a typical flowering plant of Bonpoiakani grown in a container.

[0028] The photograph at the bottom of the sheet is a close-up view of a typical flowering plant of Bonpoiakani.

DETAILED BOTANICAL DESCRIPTION

[0029] Plants used in the aforementioned photographs and described herewith in detail were grown during the autumn in 12-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 five 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, 2007 Edition, except where general terms of ordinary dictionary significance are used. [0030] Botanical classification: Euphorbia pulcherrima Willd. ex Klotzsch Bonpoiakani. [0031] Parentage: [0032] Female, or seed, parent.Proprietary selection of Euphorbia pulcherrima Willd. ex Klotzsch identified as code number 524, not patented. [0033] Male, or pollen, parent.Proprietary selection of Euphorbia pulcherrima Willd. ex Klotzsch identified as code number 397, not patented. [0034] Propagation: [0035] Type.Terminal vegetative cuttings. [0036] Time to initiate roots, summer.About seven days at temperatures about 20 C. to 25 C. [0037] Time to initiate roots, winter.About nine days at temperatures about 20 C. to 22 C. [0038] Time to produce a rooted young plant, summer.About three weeks at temperatures about 20 C. to 25 C. [0039] Time to produce a rooted young plant, winter.About four weeks at temperatures about 20 C. to 22 C. [0040] Root description.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. [0041] Rooting habit.Freely branching; medium density. [0042] Plant description: [0043] Plant habit and form.Upright and mounded plant habit; inverted triangle; inflorescences positioned above the foliar plane; moderately vigorous growth habit. [0044] Plant height.About 17 cm. [0045] Plant diameter or spread.About 30 cm. [0046] Lateral branch description.Branching habit: Freely branching habit, about four lateral branches develop per plant; pinching is not required. Length: About 9.4 cm. Diameter: About 4.2 mm. Internode length: About 1.6 cm. Aspect: Mostly upright to somewhat outwardly. Strength: Strong. Texture and luster: Smooth, glabrous; glossy. Color: Close to 146B. [0047] Leaf description.Arrangement: Alternate, simple. Length: About 7.5 cm. Width: About 4.2 cm. Shape: Ovate. Apex: Acute. Base: Cuneate. Margin: Shallowly serrate, irregular. Texture and luster, upper surface: Sparsely pubescent; matte. Texture and luster, lower surface: Sparsely pubescent; prominent venation; matte. Venation pattern: Pinnate, reticulate. Color: Developing leaves, upper surface: Close to 137A. Developing leaves, lower surface: Close to 138B. Fully developed leaves, upper surface: Close to N137D; venation, close to 173D. Fully developed leaves, lower surface: Close to 147B; venation, close to 173D and 145C. Petioles: Length: About 2.4 cm. Diameter: About 1.7 mm. Texture, upper and lower surfaces: Smooth, glabrous. Color, upper surface: Close to 182A. Color, lower surface: Close to 183B. [0048] Inflorescence description: [0049] Inflorescence type and habit.Inflorescences are compound corymbs of cyathia with numerous flower bracts subtending the cyathia; inflorescences positioned above the foliar plane; during transportation, flower bracts resist damage. [0050] Quantity of inflorescences.About four inflorescences develop per plant. [0051] Inflorescence diameter.About 22.3 cm. [0052] Inflorescence height.About 5.1 cm. [0053] Fragrance.None detected. [0054] 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 habit, plants flower about seven weeks under natural season conditions in Japan. [0055] Post-production longevity.Good post-production longevity; plants of the new Euphorbia maintain good substance and bract color for about seven weeks. [0056] Flower bracts.Quantity per inflorescence: About eight. Length, largest bracts: About 8 cm. Width, largest bracts: About 4 cm. Shape: Ovate. Apex: Cuspidate. Base: Cuneate. Margin: Entire; very slightly undulate. Texture and luster, upper and lower surfaces: Smooth, glabrous; matte. Aspect: Slightly upright to horizontal. Venation pattern: Pinnate, reticulate. Color: Transitional bracts, upper surface: Random sectors, close to 144C, 143C, 53C and 50B. Transitional bracts, lower surface: Random sectors, close to N170D and 185D; apex, close to 145A. Developing bracts, upper surface: Close to 45B. Developing bracts, lower surface: Close to 47B. Fully expanded bracts, upper surface: Close to 46B; venation, close to 183B. Fully expanded bracts, lower surface: Close to 47B; venation, close to 181B. Flower bract petioles: Length: About 1.6 cm. Diameter: About 1.5 mm. Texture, upper and lower surfaces: Smooth, glabrous. Color, upper surface: Close to 183C. Color, lower surface: Close to 47A. [0057] Cyathia.Quantity per corymb: About seven. Diameter of cyathia cluster: About 1.9 cm. Height, individual cyathium: About 5.4 mm. Diameter, individual cyathium: About 6.7 mm. Shape, individual cyathium: Globose. Color: Close to 143B; towards the apex, close to 53B. Nectaries: Quantity per cyathium: One or two. Height, individual nectary: About 2.5 mm. Diameter, individual nectary: About 4.7 mm. Color: Close to 7A. [0058] Peduncles.Length: About 2.8 mm. Diameter: About 1.8 mm. Strength: Strong. Aspect: Upright. Texture: Smooth, glabrous. Color: Close to 145A. [0059] Reproductive organs.Stamens: Quantity per cyathium: About five. Filament length: About 5.7 mm. Filament color: Close to 59A. Anther size: About 0.8 mm by 0.5 mm. Anther shape: Lanceolate or globose. Anther color: Close to 163A and 179A. Amount of pollen: Sparse. Pollen color: Close to 5A. Pistils: To date, plants of the new Euphorbia have not been observed to develop pistils. Seeds and fruits: To date, seed and fruit production has not been observed on plants of the new Euphorbia. [0060] Disease & pest resistance: Plants of the new Euphorbia have not been shown to be resistant to pathogens and pests common to Euphorbia plants. [0061] Temperature tolerance: Plants of the new Euphorbia have been observed to tolerate temperatures ranging from about 8 C. to about 40 C.