Patent Publication Number: US-PP32172-P2

Title: Chrysanthemum plant named ‘G20ARL01WH’

Description:
Botanical designation:  Chrysanthemum  X  morifolium.    
     Cultivar denomination: ‘G20ARL01WH’. 
     CROSS-REFERENCED TO CLOSELY-RELATED APPLICATIONS 
     Title:  Chrysanthemum  Plant Named ‘Arluno Dark Pink’ 
     Applicant: Elien Sofie Pieters 
     Filed: Jan. 13, 2018 
     U.S. Plant Pat. No. 30,943 
     Title:  Chrysanthemum  Plant Named ‘G20ARL11OR’ 
     Applicant: Elien Sofie Pieters 
     Filed: Jan. 13, 2018 
     U.S. Plant Pat. No. 30,676 
     Title:  Chrysanthemum  Plant Named ‘GED18ARL6V’ 
     Applicant: Elien Sofie Pieters 
     Filed: Jan. 13, 2018 
     U.S. Plant Pat. No. 30,363 
     Title:  Chrysanthemum  Plant Named ‘GED18ARL2Y’ 
     Applicant: Elien Sofie Pieters 
     Filed: Jan. 13, 2018 
     U.S. Plant Pat. No. 30,927 
     BACKGROUND OF THE INVENTION 
     The present invention relates to a new and distinct cultivar of  Chrysanthemum  plant, botanically known as  Chrysanthemum  X  morifolium  and hereinafter referred to by the name ‘G20ARL01WH’. 
     The new  Chrysanthemum  plant is a product of a planned breeding program conducted by the Inventor in Oostnieuwkerke, Belgium. The objective of the breeding program is to create new uniformly mounding and freely flowering  Chrysanthemum  plants with unique and attractive ray floret coloration. 
     The new  Chrysanthemum  plant is a naturally-occurring whole plant mutation of  Chrysanthemum  X morifolium ‘Arluno Pink’, not patented. The new  Chrysanthemum  plant was discovered and selected by the Inventor as a single flowering plant from within a population of flowering plants of ‘Arluno Pink’ in a controlled greenhouse environment in Oostnieuwkerke, Belgium in October, 2017. 
     Asexual reproduction of the new  Chrysanthemum  plant by vegetative terminal cuttings was first conducted in a controlled greenhouse environment in Oostnieuwkerke, Belgium in January, 2018. Asexual reproduction by vegetative terminal cuttings has shown that the unique features of this new  Chrysanthemum  plant are stable and reproduced true to type in successive generations. 
     SUMMARY OF THE INVENTION 
     The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘G20ARL01WH’. These characteristics in combination distinguish ‘G20ARL01WH’ as a new and distinct  Chrysanthemum  plant:
         1. Upright, outwardly spreading and uniformly rounded plant habit; moderately vigorous growth habit.   2. Freely branching habit; dense and full plant habit; flexible stems.   3. Dark green-colored leaves.   4. Uniform and freely flowering habit.   5. Long flowering period.   6. Large decorative-type inflorescences with ray florets that are light pale yellow in color.       

     Plants of the new  Chrysanthemum  can be compared to plants of the mutation parent, ‘Arluno Pink’. Plants of the new  Chrysanthemum  differ primarily from plants of ‘Arluno Pink’ in the following characteristics:
         1. Plants of the new  Chrysanthemum  are more uniform than plants of ‘Arluno Pink’.   2. Ray florets of plants of the new  Chrysanthemum  are light pale yellow in color whereas ray florets of plants of ‘Arluno Pink’ are light red purple in color.       

     Plants of the new  Chrysanthemum  can be compared to plants of the  Chrysanthemum  X  morifolium  ‘Arluno Dark Pink’, disclosed in U.S. Plant Pat. No. 30,943. In side-by-side comparisons, plants of the new  Chrysanthemum , differ primarily from plants of ‘Arluno Dark Pink’ in ray floret color as ray florets of plants of the new  Chrysanthemum  are light pale yellow in color whereas ray florets of plants of ‘Arluno Dark Pink’ are light red purple in color. 
     Plants of the new  Chrysanthemum  can be compared to plants of the  Chrysanthemum  X  morifolium  ‘G20ARL11OR’, disclosed in U.S. Plant Pat. No. 30,676. In side-by-side comparisons, plants of the new  Chrysanthemum  differ primarily from plants of ‘G20ARL11OR’ in ray floret color as ray florets of plants of the new  Chrysanthemum  are light pale yellow in color whereas ray florets of plants of ‘G20ARL11OR’ are greyed red in color. 
     Plants of the new  Chrysanthemum  can be compared to plants of the  Chrysanthemum  X  morifolium  ‘GED18ARL6V’, disclosed in U.S. Plant Pat. No. 30,363. In side-by-side comparisons, plants of the new  Chrysanthemum  differ primarily from plants of ‘GED18ARL6V’ in ray floret color as ray florets of plants of the new  Chrysanthemum  are light pale yellow in color whereas ray florets of plants of ‘GED18ARL6V’ are dark red purple in color. 
     Plants of the new  Chrysanthemum  can be compared to plants of the  Chrysanthemum  X  morifolium  ‘GED18ARL2Y’, disclosed in U.S. Plant Pat. No. 30,927. In side-by-side comparisons, plants of the new  Chrysanthemum  differ primarily from plants of ‘GED18ARL2Y’ in ray floret color as ray florets of plants of the new  Chrysanthemum  are light pale yellow in color whereas ray florets of plants of ‘GED18ARL2Y’ are bright yellow in color. 
     Plants of the new  Chrysanthemum  can also be compared to plants of  Chrysanthemum  X  morifolium  ‘Amiko White’, disclosed in U.S. Plant Pat. No. 22,833. In side-by-side comparisons, plants of the new  Chrysanthemum  differ primarily from plants of ‘Amiko White’ in the following characteristics:
         1. Plants of the new  Chrysanthemum  are more uniformly rounded than plants of ‘Amiko White’.   2. Leaves of plants of the new  Chrysanthemum  are darker green in color and more serrated than leaves of plants of ‘Amiko White’.   3. Plants of the new  Chrysanthemum  flower about one week later than plants of ‘Amiko White’.   4. Plants of the new  Chrysanthemum  have slightly smaller inflorescences than plants of ‘Amiko White’.   5. Fully developed ray florets of plants of the new  Chrysanthemum  are light pale yellow in color whereas fully developed ray florets of plants of ‘Amiko White’ are white in color.       

    
    
     
       BRIEF DESCRIPTION OF THE PHOTOGRAPH 
       The accompanying photograph illustrates the overall appearance of the new  Chrysanthemum  plant showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. The photograph ( FIG. 1 ) comprises a side perspective view of a typical flowering plant of ‘G20ARL01WH’ grown in a container. 
     
    
    
     DETAILED BOTANICAL DESCRIPTION 
     The aforementioned photograph and following observations and measurements describe plants grown in 19-cm containers in an outdoor nursery in Oostnieuwkerke, Belgium under natural daylengths during the autumn and under cultural practices generally used in commercial  Chrysanthemum  production. During the production of the plants, day temperatures ranged from 20° C. to 25° C. and night temperatures ranged from 12° C. to 18° C. Plants were 20 weeks old when the photograph and detailed description were taken. In the following description, color references are made to The Royal Horticultural Society Colour Chart, 2005 Edition, except where general terms of ordinary dictionary significance are used.
     Botanical classification:  Chrysanthemum  X  morifolium  ‘G20ARL01WH’.   Parentage: Naturally-occurring whole plant mutation of  Chrysanthemum  X  morifolium  ‘Arluno Pink’, not patented.   Propagation:
             Type cutting .—By vegetative tip cuttings.     Time to initiate roots, summer .—About two weeks at temperatures about 20° C.     Time to initiate roots, winter .—About 20 days at temperatures about 20° C.     Time to produce a rooted young plant, summer .—About 30 days at temperatures about 20° C.     Time to produce a rooted young plant, winter .—About 40 days at temperatures about 20° C.     Root description .—Fine, fibrous; typically light brown 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.     Rooting habit .—Freely branching; medium density.       
       Plant description:
             Appearance .—Perennial decorative-type  Chrysanthemum ; stems upright and outwardly spreading giving a uniformly rounded appearance to the plant; plants roughly spherical; very freely branching habit, about 25 to 30 primary lateral branches develop, each primary lateral branch with multiple secondary branches; pinching enhances lateral branch development; dense and full plant habit; moderately vigorous growth habit; moderate growth rate; plants flexible, not brittle.     Plant height .—About 40 cm.     Plant width .—About 50 cm.     Lateral branches .—Length: About 25 cm. Diameter: About 2 mm to 3 mm. Internode length: About 2 cm. Strength: Moderately strong, flexible. Texture: Pubescent, fine; longitudinally ridged. Color: Close to 137A.     Leaves .—Arrangement: Alternate, simple. Length: About 3 cm to 5 cm. Width: About 2.5 cm to 3 cm. Apex: Rounded to cuspidate. Base: Attenuate. Margin: Palmately lobed and serrate, sinuses between lateral lobes divergent to parallel. Texture, upper and lower surfaces: Slightly pubescent. Venation: Palmately reticulate. Color: Developing leaves, upper surface: Close to 137C. Developing leaves, lower surface: Close to 137D. Fully expanded leaves, upper surface: Close to N137C; venation, close to 148C. Fully expanded leaves, lower surface: Close to 147B; venation, close to 147B to 147C. Petioles: Length: About 1 cm. Diameter: About 2 mm. Texture, upper and lower surfaces: Slightly pubescent; slightly rough. Color, upper surface: Close to 146C. Color, lower surface: Close to 146D. Stipules: Length: About 1 cm. Diameter: About 2 mm. Texture, upper and lower surfaces: Slightly pubescent. Color, upper and lower surfaces: Close to 137A.       
       Inflorescence description:
             Appearance .—Decorative-type inflorescence form; inflorescences borne on terminals above foliar plane; disc and ray florets arranged acropetally on a capitulum.     Fragrance .—Slightly fragrant, pungent.     Flowering response .—Under natural season conditions, plants flower in mid-September in Belgium; flowering response time, about 35 days.     Postproduction longevity .—Inflorescences maintain good color and substance for about 42 days; inflorescences persistent.     Quantity of inflorescences .—About 30 to 35 inflorescences develop per lateral branch.     Inflorescence buds .—Height: About 8 mm. Diameter: About 1.3 cm. Shape: Globular. Color: Close to 8C.     Inflorescence diameter .—About 5 cm.     Inflorescence depth  ( height ).—About 3.5 cm.     Disc diameter .—About 3 mm; inconspicuous.     Receptacle diameter .—About 3 mm.     Receptacle height .—About 2.5 mm to 3 mm.     Receptacle color .—Close to 144B.     Ray florets .—Length: About 3.5 cm to 5 cm. Width: About 7 mm. Shape: Oval. Apex: Rounded. Base: Attenuate. Margin: Entire. Aspect: Mostly flat. Texture and luster, upper and lower surfaces: Smooth, glabrous; matte. Number of ray florets per inflorescence: About 150 to 200 arranged in about ten whorls. Color: When opening, upper and lower surfaces: Close to 8C. Fully opened, upper and lower surfaces: Close to 4D; venation, close to 4D; color does not change with development.     Disc florets .—Length: About 3 mm. Diameter: About 0.5 mm to 1 mm. Shape: Tubular; apices dentate. Number of disc florets per inflorescence: About 20 massed at the center of the inflorescence. Texture and luster: Smooth, glabrous; glossy. Color, immature: Close to 145A. Color, mature: Close to 12A.     Phyllaries .—Number of phyllaries per inflorescence: About 25 arranged in two or three whorls. Length: About 4 mm to 6 mm. Width: About 2 mm to 3 mm. Shape: Ovate. Apex: Rounded. Base: Rounded to truncate. Margin: Entire. Texture, upper and lower surfaces: Smooth, glabrous. Color, upper surface: Close to 137A. Color, lower surface: Close to N137B.     Peduncles .—Length, terminal peduncle: About 5 cm. Length, fourth peduncle: About 5 cm. Length, seventh peduncle: About 5 cm. Diameter: About 2 mm. Angle: About 30° from vertical. Strength: Moderately strong. Texture: Slightly pubescent. Color: Close to 137C.     Reproductive organs .—Androecium: Not observed. Gynoecium: Not observed.     Seeds and fruits .—To date seed and fruit production have not been observed on plants of the new  Chrysanthemum.          
       Garden performance: Plants of the new  Chrysanthemum  have demonstrated excellent garden performance and will tolerate temperatures ranging from about 0° C. to about 45° C.