<i>Zamioculcas </i>plant named ‘DUYZAM1801’

Abstract

DUYZAM1801 is a new and distinctive Zamioculcas plant which is characterized by a relatively tall plant height, large leaves arising directly from tubers, and leaves comprised of dark green leaflets born on long light brown petioles and an abundance of dark green foliage. The new plant propagates successfully by leaf cuttings and has shown to be uniform and stable in the resulting generations from asexual propagation.

Claims

1. A new and distinct variety of Zamioculcas plant named DUYZAM1801, substantially as described and illustrated herein.

Description

BRIEF DESCRIPTION OF THE FIGURES

(1) FIG. 1 shows, as nearly true as it is reasonably possible to make the same in color illustrations of this type, the typical foliage and growth characteristics of the new cultivar, DUYZAM1801. The plant shown is approximately 18 months old, potted into a 14 cm nursery pot, grown at a commercial greenhouse in De Lier, The Netherlands.

(2) FIG. 2 shows, as nearly true as it is reasonably possible to make the same in color illustrations of this type, the typical foliage of the plant in FIG. 1.

BOTANICAL DESCRIPTION OF THE PLANT

(3) The following is a detailed botanical description of a new and distinct variety of Zamioculcas hybrid known as DUYZAM1801, based upon observations of 18 month old plants, potted into 14 cm nursery pots and grown indoors at a commercial nursery in De Lier, The Netherlands. Plants were grown in partial shade using accepted fertility and irrigation practices for Zamioculcas plants. With the exception of preventative fungicides, no chemical pest control measures were employed. Furthermore, no artificial light or photoperiodic treatments were given to the plants. Observation data was recorded in October of 2019.

(4) Those skilled in the art will appreciate that certain characteristics will vary with older or, conversely, with younger plants. DUYZAM1801 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 measurements 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, sixth edition, 2015.

(5) A botanical description of DUYZAM1801 and comparisons with the parent plant and the most similar variety of common knowledge are provided below. General plant description: Growth habit.Tropical evergreen perennial. Plant profile shape.Narrow inverted triangular to broad oblong. Growth rate.Moderately fast growing. Plant vigor.Moderately vigorous to highly vigorous. Height.42.2 cm to the top of the foliar plane. Width.25.5 cm. Propagation.Type Leaf cuttings. Time to initiate rooting Approximately 30 days at an approximate temperature of 25 degrees Celsius. Crop time Approximately 1 year to produce a marketable plant in a 14 cm. Pathogen and pest resistance and susceptibility.Plants have not been observed to be susceptible or resistant to pathogens and pests common to Zamioculcas sp. Environmental tolerances.Adapt to, at least, USDA Zones 10 to 12 and temperatures ranging from 5 to 40 degrees Celsius; moderate tolerance to rain; low tolerance to wind. Stem: Branching habit.No stems or branches; compound leaves in small clumps, arising directly from tuberous rhizomes. Number of clumps per plant.Four, on average. Number of additional clumps formed each year.Eight, on average. Root system: Type.Tuberous rhizomes bearing thick fleshy roots. Shape of rhizomes.Irregular oblong to ovoid. Dimensions of rhizomes.6.2 cm long and 4.1 cm in diameter. Density of rhizomes and roots.Moderately dense. Distribution of rhizomes and roots.Rhizomes shallow; roots distributed evenly throughout the soil profile, from shallow to deep. Texture of rhizomes and roots.Glabrous and very fleshy. Color of rhizomes and roots.Greyed-green, nearest to a mixture of RHS 195A and 195C. Foliage: Arrangement.Compound leaves in small clumps, arising directly from tuberous rhizomes. Attachment.Petiolate. Division.Pinnately compound. Leaf profile shape.Narrow oblong. Dimensions.31.8 cm long and 7.4 cm wide. Attitude.Upright; approximately 10 degrees from vertical. Quantity.Approximately 12 leaves per clump. Stipules.General A leafy stipule is present at the base of each pinnately compound leaf. Shape Ovate. Length 9.4 cm. Width 3.3 cm. Apex Acute. Base Broad cuneate. Margin Entire, moderately undulated. Texture Papery. Color, adaxial and abaxial surfaces Greyed-orange, nearest to in between RHS 164A and 164B. Petiole.Aspect Rounded. Length 27.9 cm. Diameter 2.0 cm at the base and 0.6 cm on average. Attitude Approximately 5 degrees from vertical. Strength Strong. Texture Smooth and glabrous. Luster Matte. Color, adaxial surface Nearest to in between yellow-green and greyed-green, RHS 148A and 195A, and closest to 195A; irregularly blotched in between yellow-green and greyed-green, RHS 147A and N189A, and closest to RHS 147A. Color, abaxial surface Nearest to in between yellow-green and greyed-green, RHS 148A and 195A, and closest to 195A; irregularly blotched in between yellow-green and greyed-green, RHS 147A and N189A, and closest to RHS 147A. Leaflets.Quantity Typically 16 leaflets. Attitude Upright. Dimensions 6.2 cm long and 3.3 cm wide. Shape Obovate to elliptic. Aspect Slightly carinate, revolute; longitudinally curled downward, distally. Apex Abruptly acute. Base Short attenuate to obtuse. Margin Entire; not undulated. Texture, adaxial surface Glabrous and moderately coriaceous. Texture, abaxial surface Glabrous and moderately coriaceous. Luster, adaxial surface Very glossy. Luster, abaxial surface Glossy. Color Juvenile foliage color, adaxial surface Nearest to in between green and yellow-green, RHS 139A and 147A. Juvenile foliage color, abaxial surface Green, nearest to in between RHS NN137B and 143A and closest to NN137B. Mature leaf color, adaxial surface Nearest to in between green and yellow-green, RHS 139A and 147A, but considerably darker. Mature leaf color, abaxial surface Green, nearest to in between RHS NN137B and 143A and closest to NN137B. Venation Pattern Pinnate. Vein color, adaxial surface Green, nearest to RHS 137C. Vein color, abaxial surface Green, nearest to RHS 143C. Petiolule Length 0.55 cm. Diameter Petioles flattened; average width is 0.3 cm and the average height is 0.2 cm. Strength Strong. Color, adaxial surface Yellow-green, nearest to RHS 148A. Color, abaxial surface Darker yellow-green to greyed-green, nearest to RHS 148A and 197A. Texture, adaxial and abaxial surfaces Glabrous. Luster, adaxial and abaxial surfaces Slightly glossy. Inflorescence: No flowering has been observed to date.

COMPARISON WITH THE PARENT PLANT

(6) Plants of the new cultivar DUYZAM1801 may be distinguished from its parent, an unnamed Zamioculcas zamiifolia plant, by the characteristics described in Table 1.

(7) TABLE-US-00001 TABLE 1 Comparison Between DUYZAM1801 and The Parent Characteristic DUYZAM1801 The parent Plant height. Shorter than the parent. Taller than DUYZAM1801. Leaflet aspect. Slightly carinate, Flatter than revolute, and DUYZAM1801. longitudinally curled downward towards the apex. Leaflet size. Smaller than the parent. Larger than DUYZAM1801. General coloration Darker shade of green Lighter shade of green of the foliage. compared to the parent. compared DUYZAM1801.

COMPARISONS WITH THE MOST SIMILAR VARIETY OF COMMON KNOWLEDGE

(8) Plants of the new cultivar DUYZAM1801 are most similar to the commercial variety, Zamioculcas EDZAMDARK1 (U.S. Plant Pat. No. 30,529). A comparison of DUYZAM1801 with EDZAMDARK1 is described in Table 2.

(9) TABLE-US-00002 TABLE 2 Comparison Between DUYZAM1801 and EDZAMDARK1 Characteristic DUYZAM1801 EDZAMDARK1 Plant height. Taller than Shorter than EDZAMDARK1. DUYZAM1801. Leaflet shape. Obovate to elliptic. Elliptic. Leaflet aspect. Slightly carinate, revolute, Slightly carinate, infolded, and longitudinally curled and longitudinally curled downward towards the downward towards the apex. apex. General color- In between green and Green. ation of the yellow green. foliage.