Lomandra confertifolia plant named ‘SIR5’

Abstract

‘SIR5’ is a distinctive variety of Lomandra confertifolia which is characterized by the combination of its compact habit, shorter leaf blade, and the very glaucous texture of the leaf blade, which gives the foliage color an overall grey-green appearance.

Description

Latin name of the genus and species: The Latin name of the genus and species of the novel variety disclosed herein is Lomandra confertifolia.

Variety denomination:

The inventive variety of Lomandra confertifolia disclosed herein has been given the variety denomination ‘SIR5’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct perennial variety of Lomandra confertifolia, which has been given the variety denomination of ‘SIR5’. Lomandra confertifolia is a species of grass-like plant native to Australia and belonging to the Xanthorrhoeacea family. The market class for ‘SIR5’ is that of an ornamental grass-like plant. ‘SIR5’ is intended for use in landscaping and as a decorative grass-like plant.

Lineage: The Lomandra confertifolia variety ‘SIR5’ was first discovered as a seedling in January 1998 in an Australian nursery in the state of New South Wales during a routine inspection of large quantities of common Lomandra confertifolia production stock. ‘SIR5’ was selected due to its very glaucous upper side leaf texture.

Asexual reproduction: ‘SIR5’ was first propagated asexually by division in the state of New South Wales, Australia and has since been asexually propagated by division and micropropagation. The distinctive characteristics of the inventive ‘SIR5’ variety have remained stable and true to type through successive cycles of asexual propagation.

SUMMARY OF THE INVENTION

‘SIR5’ is a distinctive variety of Lomandra confertifolia, which is characterized by the combination of its compact growth habit, shorter leaf blade, and the very glaucous texture of the leaf blade, which gives the foliage color an overall grey-green appearance.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 shows a ‘SIR5’ plant at about 13 months of age.

FIG. 2 shows the inflorescence of a ‘SIR5’ plant.

DETAILED BOTANICAL DESCRIPTION OF THE PLANT

The following is a detailed botanical description of a new and distinct variety of a Lomandra confertifolia ornamental grass-like plant known as ‘SIR5’. Unless indicated otherwise, plant observations were made on 16-month-old plants grown in New South Wales, Australia in nursery pots and field plots. Color notations are based on The Royal Horticultural Society Colour Chart, The Royal Horticultural Society, London, 1995 edition.

Those skilled in the art will appreciated that certain characteristics will vary with older or, conversely younger plants. ‘SIR5’ 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 with variations in the environment such as season, temperature, light intensity, day length, cultural conditions and the like.

‘SIR5’ is a perennial, dioecious (male-only), Lomandra confertifolia plant, which is a seedling selection from common Lomandra confertifolia. After its selection, ‘SIR5’ was asexually propagated by division. ‘SIR5’ has an overall foliage color that appears to be grey-green due to a very glaucous leaf texture. The glaucous leaf texture and grey-green coloration are unusual for Lomandra confertifolia plants, which usually have weak leaf glaucosity and an overall yellow-green to green foliage color. The combination of its compact form and glaucous leaf texture makes ‘SIR5’ an attractive ornamental grass-like plant. A botanical description of ‘SIR5’ and comparisons with other varieties of Lomandra confertifolia are provided below.

Technical Description of the Variety.

• Growth Habit: ‘SIR5’ is a short, rhizomatous plant forming a compact tussock. Average plant height is 35 cm and average plant spread is 45 cm in a mature plant grown in a 140 mm nursery or field pot in Sydney, New South Wales, Australia. A representative Lomandra confertifolia ‘SIR5’ plant is shown in FIG. 1.
• Leaves: Width narrow (generally 2 mm), uniform from base to tip, average length 33 cm, upper and lower side color of leaf yellow-green (RHS 147A-B), surface texture strongly glaucous resulting in an overall greyed foliar color approximating grey-green (RHS 189A-B); leaf base cauline; leaf margin entire, leaf blade margins shred at the base, the color of the shredded margin a grey-orange color (RHS 165A); leaf apex dentate; venation pattern parallel, color yellow-green (RHS 147A-B); in cross-section, emerging new leaves flat and mature leaves concave.
  • • Basal sheath.—Color brown (RHS 200A) and grey-purple (RHS 187D).
• Roots: Fibrous and spreading, similar to other Lomandra confertifolia.
• Rhizomes: Very short (3 cm to 4 cm); color with leaf sheath removed is white (RHS 155C); surface texture smooth.
• Bud: Shape oval, color grey-purple (RHS 183C).
• Inflorescence: Spike (a panicle of clusters), length 50-60 mm, average width 25 mm, composed of male flowers only, predominant color of inflorescence at anthesis yellow (RHS 6A). The inflorescence of Lomandra confertifolia ‘SIR5’ is shown in FIG. 2.
  • • Floret.—Sessile, average length 3 mm.
    • Pedicels.—Absent.
    • Bracts.—Average length 6 mm; color grey-brown (approximately RHS 199D).
• Flowers: Outer perianth grey-purple (RHS 183C) proximally, yellow green (RHS 146A-B) distally along the central zone, and grey-yellow (RHS 161D) along each perianth segment margin; inner perianth yellow (RHS6A) fading toward the margin to yellow (RHS 13D).
  • • Flower rachis.—Length 40-50 mm.
    • Reproductive organs.—Male only, six stamens, anther length 0.5 mm to 0.8 mm, anther color yellow (approximately RHS 8B).
• Flowering Period: Primarily in the spring with secondary flowering occurring in summer to autumn in Sydney, New South Wales, Australia, lasting approximately 9 days each period.
• Fragrance: Medium strength, typical of Lomandra confertifolia.
• Seed: Seed not produced.
• Environmental Tolerance: ‘SIR5’ has shown potential for shade tolerance. The winter hardiness of ‘SIR5’ is at least to zone 8a in the Southeastern United States. ‘SIR5’ has excellent drought tolerance. After severe wilting, ‘SIR5’ has been noted to recover with watering. ‘SIR5’ does well in sandy soils, but also tolerates heavy, clay-type soils well.
• Disease Resistance: ‘SIR5’ has good resistance to root rot comparable with most other Lomandra confertifolia.

These and other features and characteristics of ‘SIR5’ are apparent from FIG. 1.

Comparison of ‘SIR5’ with Other Varieties of Lomandra confertifolia

‘SIR5’ has a compact growth habit with a shorter plant height and a narrower plant diameter and leaves that are shorter than common Lomandra confertifolia. The coloration of ‘SIR5’ is distinct from that of common Lomandra confertifolia and another comparable type known as ‘Little Con’ (unpatented). ‘SIR5’ has a more glaucous leaf texture resulting in an overall grey-green foliage color, whereas common Lomandra confertifolia and ‘Little Con’ have an overall yellow-green foliage color. Furthermore, ‘SIR5’ has brown to grey-purple basal shoots with grey-orange shredded margins as compared to ‘Little Con’, which has yellow-green basal shoots with grey-orange margins and grey-yellow shredded margins. ‘SIR5’ has a small flower spike typical of Lomandra confertifolia.

The novelty and distinctiveness of ‘SIR5’ as compared with other varieties of Lomandra confertifolia is further illustrated in Table 1.

TABLE 1
	Plant	Plant	Leaf blade		Foliage
	height	width	length	Leaf blade	overall
Variety	(cm)	(cm)	(cm)	glaucosity	coloration
‘SIR5’	35	45	33	Strong	Grey-
					green
Common Lomandra	42	62	44	Weak	Yellow-
confertifolia					green
‘Little Con’	26	34	22	Weak	Yellow-
					green
Test Plots were planted in September 2004, at Abulk Nursery in Windsor, New South Wales, Australia by Abulk Pty Ltd.

Claims

1. A new and distinct variety of Lomandra confertifolia plant named ‘SIR5’, substantially as described and illustrated herein.