It comprises 65% of all plantation hardwood in Australia with approximately 4,500 km 2 (1,100,000 acres) planted. It is especially well-suited to countries with a Mediterranean-type climate, but also grows well in high altitudes in the tropics. Its rapid growth and adaptability to a range of conditions is responsible for its popularity. Large blue gum eucalyptus in Pleasanton, California – 46.5 m (153 ft) in height and 10.5 m (34 ft) in circumference.īlue gum is one of the most extensively planted eucalypts. Lewin claimed that the tallest was 101 m (331 ft). While this claim is often regarded as being exaggerated, the environmentalist Jared Diamond argues in favor of this claim, stating that such trees were likely cut down during the colonization of Australia by the English. There are historical claims of even taller trees with Robert Edwards Carter Stearns claiming that when he was alive, they were capable of growing to 400 feet. They typically grow from 30–55 m (98–180 ft) tall. Cyprus, southern Africa, New Zealand, western United States ( California), Hawaii, Macaronesia, Unusual specimens There are naturalised non-native occurrences in Spain and Portugal, and other parts of southern Europe incl.
Subspecies pseudoglobulus is mostly distributed in eastern Gippsland but there are isolated populations further inland and in the Nadgee Nature Reserve in south-eastern New South Wales. Subspecies maidenii occurs on near-coastal ranges of south-eastern New South Wales and eastern Victoria. Subspecies globulus is mainly found in lowland parts of Tasmania, but is also found on some Bass Strait islands including King Island, and in the extreme south-west of Victoria. Subspecies bicostata occurs in montane and tableland areas between the Carrai Plateau in northern New South Wales and the Pyrenees in Victoria. īlue gum grows in forests in New South Wales, Victoria and Tasmania, including some of the Bass Strait Islands. pseudoglobulus), commonly known as Victorian eurabbie has pedicellate flower buds arranged in groups of three. (formerly Eucalyptus maidenii), commonly known as Maiden's gum has flower buds arranged in groups of seven globulus, commonly known as Tasmanian blue gum, has flower buds arranged singly in leaf axils (formerly Eucalyptus bicostata), commonly known as Victorian blue gum or eurabbie, has sessile flower buds arranged in groups of three bicostata ( Maiden, Blakely & Simmonds) J.B.Kirkp. Each subspecies has a characteristic arrangement of its flower buds: In 1974, James Barrie Kirkpatrick described four subspecies and the names have been accepted by the Australian Plant Census. The species name is from the Latin globulus, a little ball or small sphere, referring to the shape of the fruit. The Tasmanian blue gum was proclaimed as the floral emblem of Tasmania on 27 November 1962. The d'Entrecasteaux expedition made immediate use of the species when they discovered it, the timber being used to improve their oared boats. Labillardière collected specimens at Recherche Bay during the d'Entrecasteaux expedition in 1792. Taxonomy and naming Įucalyptus globulus was first formally described in 1800 by the French botanist Jacques Labillardière in his book, Relation du Voyage à la Recherche de la Pérouse. The fruit is a woody conical or hemispherical capsule with the valves close to rim level. Flowering time varies with subspecies and distribution but the flowers are always white. Mature buds are top-shaped to conical, glaucous or green, with a flattened hemispherical, warty operculum with a central knob. The individual buds are also usually sessile, sometimes on a pedicel up to 5 mm (0.20 in) long.
The flower buds are arranged singly or in groups of three or seven in leaf axils, sometimes sessile or on a short thick peduncle. Adult leaves are arranged alternately, the same glossy to dark green on both sides, lance-shaped or curved, 150–300 mm (5.9–11.8 in) long and 17–30 mm (0.67–1.18 in) wide on a petiole 1.5–6 mm (0.059–0.236 in) long. Juvenile leaves are mostly arranged in opposite pairs, sessile, glaucous elliptic to egg-shaped, up to 150 mm (5.9 in) long and 105 mm (4.1 in) wide. Young plants, often several metres tall, and coppice regrowth have stems that are more or less square in cross-section with a prominent wing on each corner. The bark is usually smooth, white to cream-coloured but there are sometimes slabs of persistent, unshed bark at the base. Eucalyptus globulus is a tree that typically grows to a height of 45 m (148 ft) but may sometimes only be a stunted shrub, or alternatively under ideal conditions can grow as tall as 90–100 m (300–330 ft), and forms a lignotuber.
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