<i>Mandevilla </i>plant named ‘PATMANWHI2’

Abstract

A new and distinct Mandevilla plant named ‘PATMANWHI2’ which is characterized by a freely branching growth habit with a relatively short plant height, large flowers, white flowers that do not fade to yellow-green when exposed to cooler temperatures, flowers with a dark yellow inner floral tube, as well as the stability of these characteristics from generation to generation.

Claims

1. A new and distinct variety of Mandevilla plant named ‘PATMANWHI2’, substantially as described and illustrated herein.

Description

BRIEF DESCRIPTION OF THE FIGURES

(1) FIG. 1 illustrates, as nearly true as it is reasonably possible to make the same in color photographs of this type, an exemplary 12 month old ‘PATMANWHI2’ plant in a 19 cm nursery pot, grown in a greenhouse in Klazienaveen, The Netherlands.

(2) FIG. 2 illustrates, as nearly true as it is reasonably possible to make the same in color photographs of this type, the mature foliage of ‘PATMANWHI2’.

(3) FIG. 3 illustrates, as nearly true as it is reasonably possible to make the same in color photographs of this type, an exemplary flower of ‘PATMANWHI2’.

BOTANICAL DESCRIPTION OF THE PLANT

(4) The following observations and measurements were made in April of 2021 and describe averages from a sample set of six specimens of 12 month-old ‘PATMANWHI2’ plants grown in 19 cm nursery pots grown in a greenhouse in Klazienaveen, The Netherlands. Plants were produced using conventional greenhouse production protocols for Mandevilla which consisted of regular overhead and ebb and flood irrigation and fertigation applications. Pest or disease control measures were utilized in production as required. Plants were produced with full sun exposure and no photoperiodic treatments or artificial light was given to the plants.

(5) Those skilled in the art will appreciate that certain characteristics will vary with older or, conversely, with younger plants. ‘PATMANWHI2’ 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 characteristics 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, 2015 (sixth edition).

(6) A botanical description of ‘PATMANWHI2’ and comparisons with the parents and most similar commercial variety of Mandevilla are provided below. Plant description: Growth habit.—Vining perennial; broad upright. Plant shape.—Ovate to obovate to broad obovate. Average height from base to top of foliage.—56.0 cm. Average height from base to top of the floral plane.—36.5 cm. Average width.—33.2 cm. Growth rate.—Moderately fast. Plant vigor.—Moderately vigorous. Propagation method.—Softwood stem cuttings; rooting is in initiated in approximately 21 days, with a fully rooted cutting in approximately 6 weeks, when grown in a greenhouse with an ambient average temperature of 28 to 30 degrees Celsius. Time to produce a finished plant.—Approximately 9 to 12 months is required to produce a fully rooted and marketable 19 cm plant when grown under greenhouse conditions. Disease and pest resistance or susceptibility.—Plants have not been observed to be susceptible or resistant to pathogens and pests common to Mandevilla sanderi. Environmental tolerances.—Adapt to at least USDA Zones 10 and 12, and temperatures ranging from at least 5 degrees to 40 degrees Celsius; moderate tolerance to rain; low to moderate tolerance to wind; low tolerance to drought. Root system: General.—Freely branching; moderately dense rooting. Texture.—Fibrous. Color.—Greyed-orange, nearest to in between RHS 164A and 165B. Stem: Branching habit.—Basally branching main stem; freely branching with vining lateral branches which are void of tendrils or anchoring roots. Stems and branches exude a milky exudate when damaged. Number of main stems per plant.—7. Number of lateral branches per plant.—18. Aspect.—Rounded. Length of lateral branches.—27.3 cm. Diameter of lateral branches.—0.25 cm at the widest point. Internode length on lateral branches.—5.0 cm. Attitude.—Upright; angle is approximately 30 degrees from vertical. Strength.—Strong. Texture and luster.—Glabrous and moderately glossy. Color, juvenile.—Yellow-green, nearest to RHS 144B. Color, mature.—Yellow-green, nearest to a mixture of RHS 146B and 146C. Color at internodes.—Yellow-green, nearest to a mixture of RHS 146B and 146C. Color of bark on main stems.—Greyed-brown, nearest to a mixture of RHS 199A and 199B. Foliage: Arrangement.—Opposite. Division.—Simple. Quantity.—Average of 12 leaves per lateral branch. Lamina.—Dimensions — 5.7 cm long and 3.4 cm wide, on average. Shape — Broad obovate to broad elliptic. Aspect — Flat to very slightly carinate. Apex — Short apiculate. Base — Rounded to obtuse. Margin — Entire; not undulated. Pubescence, texture and luster of adaxial surface — Glabrous, smooth, and moderately glossy. Pubescence, texture and luster of abaxial surface — Glabrous, smooth, and moderately glossy. Color — Juvenile foliage, adaxial surface — Green, nearest to in between RHS 137A and 143A. Juvenile foliage, abaxial surface — Yellow-green, nearest to RHS 146B. Mature foliage, adaxial surface — In between green, nearest to RHS NN137A, and yellow-green, nearest to RHS 147A, but darker. Mature foliage, abaxial surface — Yellow-green, nearest to RHS 145C. Venation — Pattern — Pinnate. Venation color, adaxial surface — Green, nearest to a mixture of RHS 143B and 143C. Venation color, abaxial surface — Yellow-green, nearest to RHS 145C. Petiole.—Length — 1.2 cm. Width — 0.125 cm. Texture — Smooth and glabrous. Luster — Slightly glossy. Strength — Somewhat strong. Color, adaxial surface — Yellow-green, nearest to RHS 144C. Color, abaxial surface — Yellow-green, nearest to RHS 144C. Inflorescence: Inflorescence arrangement.—Axillary raceme bearing 3 to 8 flowers. Natural flowering season.—Long flowering period; spring through autumn in USDA Hardiness Zones 10 through 12. Time to flower.—Approximately 10 weeks from planting a rooted cutting. Dimensions.—14.2 cm high and 10.2 cm in diameter. Quantity of flowers per inflorescence.—3 on average; varying from 2 to 5. Quantity of flowers per plant.—7. Quantity of flower buds per plant.—28. Quantity of flowers and flower buds per plant.—35. Peduncle.—Dimensions — 7.5 cm long and 0.2 cm in diameter. Aspect — Upward and outward; at approximately 30 degrees to the lateral branch axis. Strength — Moderately strong. Texture and luster — Glabrous and moderately glossy. Color — Green, nearest to RHS 143B. Bud: Shape.—Narrow oblanceolate. Dimensions.—4.8 cm long and 0.8 cm in diameter. Pubescence, texture and luster.—Glabrous, smooth and very slightly glossy. Color.—The distal one-quarter portion of the bud is yellow-green, nearest to RHS 145D; the middle portion is a darker shade of yellow-green, nearest to RHS 145C; and, the proximal one-third portion of the bud is yellow-green, nearest to RHS 145A. Flower: Flowering habit.—Moderately free flowering. Shape.—Funnelform. Flower vertical height.—7.8 cm. Flower width.—7.8 cm. Flower length.—5.4 cm. Attitude.—Flowers are outward facing. Fragrance.—A faint pleasant fragrance; acidic-sweet. Lastingness.—Approximately 10 days. Persistent.—Self-cleaning. Pedicels.—Dimensions — 2.6 cm long and 0.2 cm in diameter. Aspect — Upward and outward; approximately 20 degrees to the peduncle axis. Strength — Moderately strong. Texture and luster — Glabrous, smooth, and moderately glossy. Color — Yellow-green, nearest to RHS 144B. Corolla throat.—Shape — In between cylindrical and conical. Depth — 2.2 cm. Diameter — 1.3 cm. Texture — Glabrous; smooth. Outer color — White, nearest to RHS NN155D, and fading to yellow-green, proximally, nearest to RHS 150D. Inner color — Yellow, nearest to a mixture of RHS 5C and 5D, and fading to a darker shade of yellow towards the narrowest part of the throat, nearest to RHS 7A. Venation color — White, nearest to RHS 155D. Corolla tube.—Shape — Near cylindrical. Depth — 2.0 cm. Diameter — 0.45 cm, distally, where the tube begins to widen. Texture — Glabrous; smooth. Outer color, when fully opened — Yellow-green, nearest to a mixture of RHS 145A and 145B. No visible venation. Inner color, when fully opened — Yellow-green, nearest to RHS 144C. No visible venation. Petals.—Quantity of Petals — 5. Arrangement — Single whorl; petals imbricate and fused into an elongated tube at the base; lower 56 percent of the petals are fused. Shape of petal lobes — Spatulate. Dimensions, free portion of petals — 7.5 cm long and 3.2 cm wide. Apex — Unequal short apiculate to rounded. Base — Truncate; fused at the base. Margin — Entire; moderately to highly undulated. Aspect — Moderately reflexed. Pubescence, texture and luster of upper surface — Glabrous, velvety and very slightly glossy. Pubescence, texture and luster of lower surface — Glabrous, moderately velvety and slightly glossy. Petal lobe color when opening, upper surface — Nearest to in between white and green-white, RHS 155C and 157D. Petal lobe color when opening, lower surface — White, nearest to RHS 155C, with a green-white central longitudinal band, nearest to RHS 157D. Petal lobe color when fully opened, upper surface — White, nearest to RHS NN155D. No visible venation. Petal colors do not fade. Petal lobe color when fully opened, lower surface — White, nearest to RHS NN155D. No visible venation. Petal colors do not fade. Calyx.—Shape — Rotate; single whorl of sepals. Dimensions — 0.9 cm in diameter and 0.55 cm tall. Sepals — Arrangement — Sepals are free, rotate. Quantity — 5. Shape — Narrow triangular to lanceolate. Sepal dimensions — 0.8 cm long and 0.2 cm wide at the base. Apex — Narrow acuminate. Base — Cuneate. Margin — Entire; not undulated. Pubescence, texture and luster, upper surface — Smooth; glabrous; slightly glossy. Pubescence, texture and luster, lower surface — Smooth; glabrous; slightly glossy. Color when opening, upper surface — Yellow-green, nearest to RHS 145A; apex is greyed-red, nearest to RHS 179C. Color when opening, lower surface — Yellow-green, nearest to RHS 145A; apex is greyed-red, nearest to RHS 179C. Color when fully opened, upper surface — Yellow-green, nearest to RHS 145B; apex is greyed-red, nearest to RHS 179B. Color when fully opened, lower surface — Yellow-green, nearest to RHS 145A; apex is greyed-red, nearest to RHS 179B. Reproductive organs: Androecium.—Stamen quantity — 5. Attachment — Adnate. Filament length — 0.3 cm. Filament color — Yellow-green, nearest to RHS 150D. Anther attachment — Basifixed. Anther shape — Narrow sagitate. Anther length — 0.8 cm. Anther width — 0.125 cm. Anther color — Greyed-yellow, nearest to RHS 162D yet lighter. Anther aspect — The five anthers are touching at their apices, thus forming a cone of anthers. Pollen, presence — Scarce. Pollen color — White, RHS 155A. Gynoecium.—Pistil quantity — One. Pistil length — 2.1 cm. Style length — 1.9 cm. Style color — Yellow-green, nearest to RHS 145D. Stigma shape — Club-shaped. Stigma length — 0.2 cm. Stigma diameter — 0.2 cm. Stigma color — Yellow-green, nearest to RHS 150D. Ovary color — Yellow-green, nearest to RHS 144C. Seed and fruit: None observed.

COMPARISONS WITH THE PARENT PLANT

(7) Plants of the new cultivar ‘PATMANWHI2’ differ from the seed parent, Mandevilla ‘Pearl’ (not patented), by the characteristics described in Table 1.

(8) TABLE-US-00001 TABLE 1 Characteristic ‘PATMANWHI2’ ‘Pearl’ General coloration of White; does not fade to White; fades to yellow- the flowers. yellow-green when green when exposed to exposed to cooler cooler temperatures. temperatures. Flower size. Larger than ‘Pearl’. Smaller than ‘PATMANWHI2’.

COMPARISON WITH THE MOST SIMILAR MANDEVILLA CULTIVAR KNOWN TO THE INVENTOR

(9) Plants of the new cultivar ‘PATMANWHI2’ differ from the commercial variety, Mandevilla ‘PATMANDEWI’ (Community Plant Variety Rights grant number 35007), in the following characteristics described in Table 2 below.

(10) TABLE-US-00002 TABLE 2 Characteristic ‘PATMANWHI2’ ‘PATMANDEWI’ General coloration of White with a dark White, suffused with red- the flowers. yellow inner floral purple; yellow-orange tube. floral tube. Size of the flowers. Smaller than Larger than ‘PATMANDEWI’. ‘PATMANWHI2’.