Bidens plant named ‘Duebigontra’

#Botanical designation: Bidens ferulifolia.

#Cultivar denomination: ‘DUEBIGONTRA’.

#The present invention relates to a new and distinct cultivar of Bidens plant, botanically known as Bidens ferulifolia and hereinafter referred to by the name ‘Duebigontra’.

#The accompanying photograph illustrates the overall appearance of the new Bidens plant showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photograph may differ slightly from the color values cited in the detailed botanical description which accurately describe the colors of the new Bidens plant.

#The photograph comprises a side perspective view of a typical flowering plant of ‘Duebigontra’ grown in a container.

#The aforementioned photograph and following observations and measurements describe plants grown in 12-cm containers during the summer in a glass-covered greenhouse in Rheinberg, Germany under conditions and practices which approximate those generally used in commercial Bidens production. During the production of the plants, day and night temperatures averaged 18° C. and light levels averaged 4,500 lux. Plants were pinched one time about three weeks after planting. Plants were twelve weeks old when the photograph and description were taken. In the following description, color references are made to The Royal Horticultural Society Colour Chart, 1995 Edition, except where general terms of ordinary dictionary significance are used. Botanical classification: Bidens ferulifolia ‘Duebigontra’. Parentage: Female parent.—Proprietary selection of Bidens ferulifolia identified as code number B07-0203-002, not patented. Male parent.—Proprietary selection of Bidens ferulifolia identified as code number F-07-14, not patented. Propagation: Type.—By vegetative cuttings. Time to initiate roots, summer.—About five days at about 20° C. Time to initiate roots, winter.—About seven days at about 20° C. Time to produce a rooted young plant, summer.—About three weeks at about 20° C. Time to produce a rooted young plant, winter.—About four weeks at about 20° C. Root description.—Fine, fibrous; color, close to 155B. Rooting habit.—Freely branching; moderately dense. Plant description: Plant and growth habit.—Relatively compact, outwardly spreading to trailing plant habit; moderately vigorous growth habit. Branching habit.—Freely branching habit with lateral branches potentially forming at every node. Plant height.—About 13 cm. Plant diameter or spread.—About 23 cm. Lateral branches.—Length: About 13 cm. Diameter: About 3.5 mm. Internode length: About 1.5 cm. Strength: Strong. Texture: Pubescent. Color: Close to 144A. Foliage description: Arrangement.—Opposite, simple. Length.—About 2.6 cm. Width.—About 2.7 cm. Shape.—Roughly deltoid; pinnatisect. Apex.—Apiculate. Base.—Acute. Margin.—Deeply incised; laciniate. Texture, upper and lower surfaces.—Smooth, glabrous. Venation pattern.—Pinnate. Color.—Developing leaves, upper surface: Close to 137A. Developing leaves, lower surface: Close to 137B. Fully expanded leaves, upper surface: Close to 146A; venation, close to 146A. Fully expanded leaves, lower surface: Close to 146B; venation, close to 146A. Petioles.—Length: About 5 mm. Diameter: About 1 mm. Texture, upper and lower surfaces: Smooth, glabrous. Color, upper surface: Close to 146C. Color, lower surface: Close to 146B. Inflorescence description: Appearance.—Single (daisy) inflorescence form with ray and disc florets; inflorescences positioned above and beyond the foliar plane on strong peduncles; inflorescences face upright to outwardly. Flowering habit.—Freely flowering habit; about 30 inflorescences per plant. Fragrance.—None detected. Natural flowering season.—Plants flower continuously during the spring in Germany; early flowering habit, plants begin flowering about five weeks after planting. Inflorescence longevity.—Inflorescences last about one week on the plant; inflorescences persistent. Inflorescence bud.—Height: About 7 mm. Diameter: About 5 mm. Shape: Ovoid. Color: Close to 148A. Inflorescence size.—Diameter: About 3.8 cm. Depth (height): About 1 cm. Disc diameter: About 8 mm. Receptacle diameter: About 4.3 mm. Receptacle height: About 1 mm. Receptacle color: Close to 146A. Ray florets.—Length: About 1.5 cm to 1.7 cm. Width: About 1 cm. Shape: Elliptical to ovate. Apex: Emarginate. Base: Obtuse. Margin: Entire. Texture, upper and lower surfaces: Smooth, glabrous. Number of ray florets per inflorescence: About eight arranged in a single whorl. Color: When opening, upper and lower surfaces: Close to 12A. Fully opened, upper surface: Close to 14A; color becoming closer to 17A with development. Fully opened, lower surface: Close to 13A; color becoming closer to 17A with development. Disc florets.—Shape: Tubular; apex dentate. Length: About 7 mm. Diameter: About 1 mm. Number of disc florets per inflorescence: About 50. Color, when opening: Apex: Close to 163A. Mid-section: Close to 5A. Base: Close to 1B. Color, fully opened: Apex: Close to 14A. Mid-section: Close to 199B. Base: Close to 1B. Phyllaries.—Quantity per inflorescence: About 13 in a single whorl. Length: About 5.5 mm. Width: About 1 mm. Shape: Elongated elliptical. Apex: Acute. Base: Truncate. Margin: Entire. Texture, upper and lower surfaces: Smooth, glabrous. Color, upper and lower surfaces: Close to 146A. Peduncles.—Length, terminal peduncle: About 7.3 cm. Length, fourth peduncle: About 10 cm. Diameter: About 0.9 mm. Strength: Strong; flexible. Aspect: Upright to outwardly holding inflorescences above and beyond the foliar plane. Texture: Smooth, glabrous. Color: Close to 144A. Reproductive organs.—Androecium: Present on disc florets only. Quantity per disc floret: Two. Filament length: About 2.5 mm. Filament color: Close to 7A. Anther shape: Oval. Anther length: About 2.5 mm. Anther color: Close to 200C. Pollen amount: Scarce. Pollen color: Close to 7A. Gynoecium: Present on ray and disc florets. Quantity per florets: One. Pistil length: About 7 mm. Style length: About 4 mm. Style color: Close to 9C. Stigma shape: Bifurcate. Stigma color: Close to 15A. Ovary color: Close to 145B. Seeds.—Quantity per inflorescence: About 40 to 50. Length: About 7 mm. Diameter: About 0.8 mm. Color: Close to 200A. Disease/pest resistance: Plants of the new Bidens have not been shown to be resistant to pathogens and pests common to Bidens. Garden performance: Plants of the new Clematis have exhibited good tolerance to rain and wind and have been observed to tolerate temperatures from about 5° C. to about 40° C.