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Hakonechloa plant named `Naomi`
PP19897 Hakonechloa plant named `Naomi`
Patent Drawings:Drawing: PP19897-3    Drawing: PP19897-4    
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(2 images)

Inventor: Bennato Chez
Date Issued: April 7, 2009
Application: 12/079,983
Filed: March 31, 2008
Inventors: Bennato Chez; Olivier (Min Rungis Cedex, FR)
Primary Examiner: Para; Annette H
Assistant Examiner:
Attorney Or Agent: Aguirre; Penny J.
U.S. Class: PLT/384
Field Of Search: ; PLT/384
International Class: A01H 5/00
U.S Patent Documents:
Foreign Patent Documents:
Other References:

Abstract: A new and unique cultivar of Hakonechloa named `Naomi` that is characterized by its variegated foliage that is creamy white to yellow green with green bands in the spring and summer and turning deep red to deep purple in fall. As the mature foliage changes to a red and purple with cool temperatures, a combination of summer and fall foliage creates a unique combination of foliage color. `Naomi` is further characterized by its dwarf plant habit, its hardiness in U.S.D.A. Zones 5 to 9, and its relatively vigorous growth habit.
Claim: It is claimed:

1. A new and distinct cultivar of Hakonechloa plant named `Naomi` as herein illustrated and described.

This application is co-pending with U.S. Plant Patent application No. 12/080,053 filed for a cultivar selected by the same inventor entitled Hakonechloa Plant Named `Nicolas`. Botanical classification: Hakonechloa macra.

Varietal designation: `Naomi`.


The present invention relates to a new and distinct cultivar of Hakonechloa macra and will be referred to hereafter by its cultivar name, `Naomi`. `Naomi` represents a new cultivar of Hakone grass, an ornamental grass grown for landscape use.

The inventor discovered the new cultivar, `Naomi`, in a cultivated trial garden in Min Rungis Cedex, France as a naturally occurring whole plant mutation in fall of 2003. The inventor had been growing and selecting unnamed seedlings ofHakonechloa macra in his trail garden for many years and therefore, the parent plants of `Naomi` are unknown.

Asexual reproduction of the new cultivar was first accomplished by stem division in Min Rungis Cedex, France in spring 2004 by the inventor. The characteristics of this cultivar have been determined to be stable and are reproduced true to typein successive generations.


The following traits have been repeatedly observed and represent the characteristics of the new cultivar as grown outdoors in a trial garden for five years in Min Rungis Cedex, France. These attributes in combination distinguish `Naomi` as aunique cultivar of Hakonechloa. 1. `Naomi` exhibits variegated foliage that is creamy white to yellow green with green bands in the spring and summer and turning deep red to deep purple in fall. As the mature foliage changes to a red purple color withcool temperatures, a combination of summer and fall foliage creates a unique combination of foliage color. 2. `Naomi` exhibits a dwarf plant habit reaching about 35 cm in height in bloom with the foliage reaching 25 cm in height. 3. `Naomi` issuitable for use as an edging and groundcover plant. 4. `Naomi` is hardy in U.S.D.A. Zones 5 to 9. 5. `Naomi` blooms in summer with airy panicles above the foliage.

`Naomi` can be most closely compared to Hakonechloa macra `Aureola` (unpatented) and `Nicolas`, another cultivar selected by the inventor. `Aureola` has similar leaf variegation, however the fall color of `Aureola` is a less intense, is more redthan purple in color and has a less vigorous growth habit. `Nicolas` is similar to `Naomi` in height and also attains an intense red fall color, however the summer foliage of `Nicolas` is green and non-variegated and the fall color is less purple incolor.


The accompanying colored photographs illustrate the overall appearance and distinct characteristics of the new Hakonechloa.

The photograph on the first sheet was taken in October of a 3 year old plant of `Naomi` as grown in a trial garden in The Netherlands and illustrates the purple coloration of `Naomi`.

The photographs on the second sheet were taken in late summer of 3 year-old plants of `Naomi` as grown in a 26 cm container in The Netherlands.

The photograph on the top of the second sheet is a close-up view of the foliage with a combination of yellow summer foliage and fall red foliage.

The photograph on the bottom of the second sheet provides a close-up view of the flower panicles.

The colors in the photographs are as close as possible with the digital photography techniques available, the color values cited in the detailed botanical description accurately describe the colors of the new Hakonechloa.


The following is a detailed description of 3 year-old plants of `Naomi` as grown outdoors in 26 cm containers in The Netherlands. The plants were grown in average day temperatures of to C. and average night temperaturesof to C. under ambient light. The phenotype of the new cultivar may vary with variations in environmental, climatic, and cultural conditions, as it has not been tested under all possible environmental conditions. The colordetermination is in accordance with the 2001 R.H.S. Colour Chart of the Royal Horticultural Society, London, England, except where general color terms of ordinary dictionary significance are used. General description: Blooming habit.--Blooms in midsummer. Plant habit.--Herbaceous, clump-forming, slowly spreading ornamental grass forming a mound of bamboo-like cascading foliage, suitable for use as a groundcover or edging plant. Height and spread.--Exhibits a dwarf plant habit reaching about 35cm in height in bloom with the foliage reaching 25 cm in height and a spread of about 66 cm. Hardiness.--U.S.D.A. Zones 5 to 9. Culture.--Performs best in moist, well drained, organic rich soils in partial or part shade. Diseases and pests.--Nosusceptibility or resistance to diseases or pests has been observed. Root description.--Fibrous. Growth and propagation: Propagation.--Tissue culture and stem division. Vigor.--More vigorous than is typical of Hakonechloa macra selections with coloredand variegated foliage. Culm (stem) description: General.--Round, sheathed. Culm color.--146B to 146C and tinged with 183C near nodes. Culm size.--Average of 15.3 cm in length and 1 m in length. Stem surface.--Glabrous, slightly glossy. Stemnumber.--About 250 (3 year-old plant). Internode length.--Average of 3.2 cm. Branching.--Basal branches only, no lateral branches. Foliage description: Leaf shape.--Linear. Leaf division.--Simple. Leaf base.--Cuneate and decurrent at stem. Leafapex.--Acuminate. Leaf aspect.--Held from horizontal to cascading downward. Leaf venation.--Parallel, color on upper surface 143B to 143C on main veins with secondary veins matching leaf color, color on lower surface matches leaf color. Leafmargin.--Entire, with sharp short bristles that are not visually noticeable. Leaf attachment.--Sheathed. Leaf size.--Average of 1 cm in width and 14.7 cm in length. Leaf number.--Average of 5 per culm. Leaf arrangement.--Alternate Ligule.--A band oftufted hairs, 1 mm in length and N155A in color. Leaf surface.--Glabrous and slightly glossy on upper and lower surface with bristles on margins. Leaf color.--Young leaves, upper surface; N144B to N144C with stripes 143A to 143B, young leaves, lowersurface; N144D with stripes 143B to 144A, mature leaves, upper surface; 153D to 155C (depending on light) with stripes 143B to 143C and heavily tinged with colors ranging from red tones of 176A to 176C to purple tones from N77A to N77C, mature leaves,lower surface; 153D to 155C (depending on light) with stripes 143C to 143D and tinged with colors ranging from red tones of 176A to 176C to purple tones from N77A to N77C, stripes vary in width from 0.5 to 4 mm and cover an average of 25% of the leafarea. The color ranges stated are dependent on temperature and light levels. Inflorescence description: General description.--Terminal airy panicle of single spikelets. Lastingness of inflorescence.--Each panicle blooms for about 3 weeks, persistent. Fragrance.--None. Panicle size.--Average of 11.6 cm in length and up to 8.5 cm in width. Panicle number.--One per culm. Rachis size.--Up to about 10.5 cm in length, continuous with culm, 0.8 mm in diameter, with rachilla emerging at about a angle to main branch about 7 cm in length and less than 0.8 mm in diameter, N144A in color. Spikelet bud.--About 9 mm in length and 1 mm in width, narrow lanceolate in shape, 145C to 145D in color. Spikelet description.--Single floret enclosed by oneglume and one lemma, glume; lanceolate in shape with a glabrous surface, entire margin, acute apex, 4 mm in length, 0.5 mm in width and 144C to 144D in color with the tip 181 B to 181C, lemma; lanceolate in shape with a glabrous surface, entire margin,acute apex, 7 mm in length, 1 mm in width and 144C to 144D in color with the tip 181 B to 181C. Spikelet number.--About 225 per panicle. Spikelet size.--About 9 mm in length and 3 mm in width. Reproductive organs: Stamens.--2, anthers are dorsifixed,x-shaped, about 2 mm in length and 187A to 187B in color, pollen is low in quantity and 162A to 162D in color. Pistils.--2, about 1.5 mm in length, stigma is fimbriate in shape, about 0.5 mm in length, and N77C in color, style; transparent in color,about 0.5 mm in length, ovary is 145A in color. Seed.--No seed development has been observed.

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