Leptospermum polygalifolium subsp. polygalifolium

국표에 없다.

The native range of this subspecies is New South Wales. It is a shrub and grows primarily in the subtropical biome.

Leptospermum polygalifolium subsp. polygalifolium | Plants of the World Online | Kew Science

 leaves not stiff in texture and hairless – occurring over the southern half of the range including Sydney

Leptospermum polygalifolium | Australian Plants Society (austplants.com.au)

• subsp polygalifolium – Leaves usually glabrous, 2 – 3- mm wide. Its natural habitat is the central south coast of New South Wales . A small to medium shrub to 1 – 3 metres high by 1 – 3 metres wide.

Leptospermum is a genus of about 83 species, all but three occurring in Australia. The type specimen for Leptospermum polygalifolium was collected at Port Jackson in 1796. L.polygalifolium was known for many years as L.flavescens.

Leptospermum polygalifolium is a shrub, often 0.5 to 3 metres in height , or a slender to stout trunked tree to 7 metres or more, the bark usually being close and firm but soft, thick and flaky in some forms. The young stems, at first, have a close pubescence but usually become glabrous, with a conspicuous flange near the node and spreading and tending to curve around the stem. Leaves are sometimes aromatic, but not strongly, and are usually from 5 mm to 20 mm long, oblanceolate-elliptical to narrowly linear-elliptical, flat or with the margins recurved, the tip often recurved with a soft or sharp point or, occasionally, a short pungent point. Flowers are usually white but may be greenish, off-white to pale pink and are usually 10 to 15 mm in diameter, occurring singly on modified shoots on the ends of very short or long branches, often in adjacent axils and on adjacent branches with new growth extending, mostly from branch ends, during or after flowering. Flowering occurs in late spring to early summer.

 

Leptospermum polygalifolium - Australian Native Plants Society (Australia) (anpsa.org.au)

Origin

Australia: widespread on the tablelands and coast of central eastern New South Wales, extending southward along the coast.

Cultivation

In New Zealand mainly present as a cultivated plant in urban areas; occasional naturalisations observed near planted specimens.

Distribution

Scattered records and observations from mainly urban plantings across New Zealand.

Distinguishing Features

• Adult leaves oblanceolate, to 20 mm long, 2–3 mm wide.
• Leaves slighter paler below than above.
• Stems with a flange around each leaf base extending down the stem.
• Flowers ± 12 mm diam., greenish to creamy white.
• Sepals deciduous.
• Sepals hairless.
• Stamens in bundles.
• Fruit valves domed, slightly woody.

Habit

Shrub 1–3 m tall, or tree to 5 m or more tall.

Bark and Stem/Trunk

Usually firm and soft, or thick to flaky in some tree forms; a flange around each leaf base extending down the stem. Young branchlets and stems hairy, becoming hairless with age.

Leaves

Adult leaves oblanceolate, 10–20 mm or more long, ± 2–3 mm wide, lower surface often much paler, leaf blade flat, leaf surfaces not puckered, hairy at first, becoming hairless especially on upper surface, hairs on lower surface lingering; margins entire, tending to recurve, tips acute, sometimes recurved; leaf stalks absent or very short.

Flowers

Flowers solitary, axillary, ± 12 mm diam., stalked, petals 5, greenish to creamy white; sepals 5, 2–2.5 mm long, deciduous, tips free, hairless; stamens white, in bundles. Main flowering period: late winter to summer.

Fruit

Fruit dry, 5-locular, ± 6–10 mm wide, valves forming a broad high dome before opening, becoming woody with age, but fruit valves only slightly woody.

Similar Species

The subspecies L. polygalifolium subsp. tropicum (accepted by the Australian Plant Census, but not recognised as distinct in Queensland State, where the taxon naturally occurs) is also present in New Zealand, though rarely planted or observed. It differs from L. polygalifolium subsp. polygalifolium by having a weeping habit with narrower leaves (usually less than 1.5 mm wide).

Notes

Leptospermum flavescens is a name still commonly used by the nursery industry, although Thompson (1989) transferred it into synonymy under the L. polygalifolium complex, within which she recognised six Australian subspecies. For New Zealand, it appears that only L. polygalifolium subsp. tropicum (under the cultivar names Leptospermum ‘Cardwell’ and ‘Pacific Beauty’) and L. polygalifolium subsp. polygalifolium are cultivated. Leptospermum polygalifolium is a complex group with widespread intergradation between the various forms. It is possible that further revision of the species will occur in the future.

Leptospermum is a genus of about 87 species, mostly Australian, but extending to Malesia and New Zealand.

Leptospermum polygalifolium subsp. polygalifolium (landcareresearch.co.nz)

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