<i>Primulina </i>plant named ‘PREESMANPT2’

Abstract

PREESMANPT2 is a distinctive Primulina plant which is characterized by a moderately fast rate of growth, broad ovate foliage that is moderately to strongly concave with coarsely crenulate leaf margins, dark green and glossy foliage that is overlaid with a light greyed-green reticulate pattern, as well as the uniformity and stability of these characteristics from generation to generation.

Claims

1. A new and distinct variety of Primulina dryas plant named PREESMANPT2, 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 plant of PREESMANPT2 grown in a commercial greenhouse in Strijen, the Netherlands. This plant is approximately 15 weeks old, in a 13 cm container.

(2) FIG. 2 illustrates, as nearly true as it is reasonably possible to make the same in color photographs of this type, the adaxial surface of the mature foliage of PREESMANPT2.

BOTANICAL DESCRIPTION OF THE PLANT

(3) The following observations and measurements, made in June of 2022, describe averages from a sample set of six 15-week-old PREESMANPT2 plants grown in 13 cm nursery containers, from rooted cuttings, at a greenhouse in Strijen, the Netherlands. Plants were produced using conventional greenhouse production protocols for Primulina sp. which consisted of growing plants under shade with light levels of 300 watts per square meter, watering with ebb and flood benches, fertigating using an A-B fertilization scheme, and employing chemical pest measures for thrips control. No photoperiodic treatments were utilized in production.

(4) Those skilled in the art will appreciate that certain characteristics will vary with older or, conversely, with younger plants. PREESMANPT2 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, climatic and cultural conditions. Color notations are based on The Royal Horticultural Society Colour Chart, The Royal Horticultural Society, London, 2015 (sixth edition).

(5) A botanical description of PREESMANPT2 and a comparison with the parent plant and most similar commercial cultivar are provided below. Plant description: Growth habit.Broad spreading to spreading-upright herbaceous perennial with foliage growing from basal shoots. Plant shape.Flattened to flattened globular. Height from soil level to top of foliar plane.14.6 cm. Plant spread.79.0 cm. Number of basal shoots per plant.8, with one primary shoot and 7 lateral shoots. Growth rate.Moderately fast-growing. Plant vigor.Highly vigorous. Propagation.Type Asexual propagation is accomplished by way of meristematic tissue culture micropropagation. Time to initiate rooting Approximately 140 days at 18 degrees Celsius. Time to produce a rooted cutting Approximately 22 weeks are needed to produce a marketable plant in a 13 cm nursery container. Disease and pest resistance or susceptibility.Neither susceptibility nor resistance to pests and diseases common to Primulina dryas have been observed. Environmental tolerances.Adapt to temperatures as low as 5 degrees Celsius and at least as high as 40 degrees Celsius; moderate tolerance to rain; low to moderate tolerance to wind. Roots: General.Moderately dense, moderately branched rooting; roots are fleshy and non-fibrous. Distribution in the soil profile.Shallow to moderately deep. Texture.Smooth, with fine lateral roots. Foliage: Quantity.13 leaves along the main shoot and 5 per lateral shoot, on average. Arrangement.Alternate. Attachment.Petiolate. Division.Simple. Lamina.Shape Broad ovate. Length 13.3 cm, excluding the petiole. Width 11.5 cm. Apex Broad bluntly acute. Base Truncate. Aspect Moderately to strongly concave and furrowed. Margins Coarsely crenate margins with no undulation. Luster, adaxial surface Glossy. Luster, abaxial surface Very slightly glossy. Texture, adaxial surface Moderately to densely pubescent with strigose hairs with an average length of 0.4 cm and colored white, nearest to RHS NN155D. Texture, abaxial surface Densely pubescent with soft, short hairs with an average length of 0.15 cm and colored white, nearest to RHS NN155D. Color Juvenile foliage, adaxial surface Green, nearest to a mixture of RHS NN137A and 139A, and fading to yellow-green towards the base, nearest to RHS 144A; veins and portions of the lamina adjacent to veins colored greyed-green, nearest to in between RHS 194A and 194B. Juvenile foliage, abaxial surface Yellow-green, nearest to RHS 148C. Mature foliage, adaxial surface Nearest to a mixture of yellow-green and greyed-green, RHS 147A and N189A yet considerably darker; veins and portions of the lamina adjacent to veins colored greyed-green, nearest to in between RHS 194A and 194B. Mature foliage, abaxial surface Yellow-green, nearest to RHS N148B. Venation.Pattern Reticulate. Color, adaxial surfaces Greyed-green, nearest to RHS 194A. Color, abaxial surface Yellow-green, nearest to RHS 144A. Petiole: Attitude.Upright and outward. Strength.Moderately strong. Aspect.Flattened. Length.3.1 cm. Width.1.3 cm. Height.0.6 cm. Luster, adaxial surface.Moderately glossy. Luster, abaxial surface.Matte. Texture, adaxial surface.Moderately to densely pubescent with strigose hairs with an average length of 0.25 cm and colored white, nearest to RHS NN155D. Texture, abaxial surface.Densely pubescent with soft, short hairs with an average length of 0.15 cm and colored white, nearest to RHS NN155D. Color, adaxial surface.Yellow-green, nearest to RHS 144A, and transitioning to green towards the margins, nearest to RHS 137A. Color, abaxial surface.Yellow-green, nearest to RHS 148C, and becoming darker towards the margins, nearest to RHS 147B. Inflorescence: To date, PREESMANPT2 has not flowered. Comparisons with the parent plants: Plants of the new cultivar PREESMANPT2 differ from the parent, Primulina dryas Preesman PT (Dutch Plant Breeders' Rights grant number 44601), in the characteristics described in Table 1 below.

(6) TABLE-US-00001 TABLE 1 Characteristic PREESMANPT2 Preesman PT Foliage shape. Broadly ovate. Narrowly ovate. General coloration A mixture of yellow- A mixture of yellow- of the mature green and greyed- green and green, foliage. green, generally generally appearing appearing as a dark as a lighter shade green coloration. of green relative to PREESMANPT2. Expression of Prominent light None. leaf color pattern. greyed-green reticulate pattern.

(7) Plants of the new cultivar PREESMANPT2 differ from the most similar commercial variety known to the inventor, Primulina dryas Latifolia Dwarf (not patented), in the characteristics described in Table 2 below.

(8) TABLE-US-00002 TABLE 2 Characteristic PREESMANPT2 Latifolia Dwarf Foliage aspect. Substantially more Much less concaved, concaved, relative to relative to Latifolia Dwarf. PREESMANPT2. General colora- A mixture of yellow- A mixture of yellow- tion of the green and green; generally green and green; generally mature foliage. appearing as a lighter appearing as a darker shade of green relative to shade of green relative to Latifolia Dwarf. PREESMANPT2. Expression of Prominent light greyed- Prominent light greyed- leaf color green reticulate pattern; green reticulate pattern, pattern. more prominent than yet less prominent than Latifolia Dwarf. PREESMANPT2.