''Eucalyptus globoidea'', commonly known as the white stringybark, is a tree that is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

to near-coastal areas of south-eastern

Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

. It has rough, stringy bark, often furrowed on the trunk, glossy, lance-shaped to egg-shaped, often curved leaves, oval to spindle-shaped green to yellowish flower buds, white flowers and small, more or less spherical to hemispherical fruit.

Description

''Eucalyptus globoidea'' is a tree that grows to a height of with rough bark to the thinnest branches. The bark is grey to reddish brown and stringy, often furrowed on the trunk. The leaves on young trees are glossy green, a lighter shade on the lower side, egg-shaped to broadly lance-shaped long, wide and wavy. Adult leaves are egg-shaped to lance-shaped, often curved, glossy green on both sides, long and wide. The flowers are arranged in groups of mostly between eleven and fifteen on an angular or flattened

peduncle Peduncle may refer to: *Peduncle (botany), a stalk supporting an inflorescence, which is the part of the shoot of seed plants where flowers are formed *Peduncle (anatomy), a stem, through which a mass of tissue is attached to a body **Peduncle (art ...

long, individual flowers on a cylindrical

pedicel Pedicle or pedicel may refer to: Human anatomy *Pedicle of vertebral arch, the segment between the transverse process and the vertebral body, and is often used as a radiographic marker and entry point in vertebroplasty and kyphoplasty procedures ...

up to long. The mature buds are green to yellowish, oval to spindle-shaped, long and wide. The operculum is cone-shaped and about as long and wide as the

flower cup The Flower Cup ( Japanese フラワーカップ) is a Grade 3 horse race for three-year-old Thoroughbred fillies run in March over a distance of 1800 metres at Nakayama Racecourse. The race was first run in 1987 and has been run at Grade 3 leve ...

. The

stamen The stamen (plural ''stamina'' or ''stamens'') is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the filame ...

s are white. Flowering occurs from July to February but mostly from September to January. The fruit is a globe-shaped to hemispherical capsule, long and wide.

Taxonomy and naming

''Eucalyptus globoidea'' was first formally described in 1927 by

William Blakely William Faris Blakely (November 1875 – 1 September 1941) was an Australian botanist and collector. From 1913 to 1940 he worked in the National Herbarium of New South Wales, working with Joseph Maiden on ''Eucalyptus'', Maiden named a ''red g ...

who published the description in '' Journal and Proceedings of the Royal Society of New South Wales''. The

specific epithet In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...

(''globoidea'') is derived from the

Latin Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power of the ...

word ''globoideus'' meaning "globoid", referring to the shape of the fruit.

Distribution and habitat

White stringbark grows in forest and woodland on hills and slopes on the coast and nearby tablelands, south from

Woolgoolga Woolgoolga is a town on the Mid North Coast of New South Wales, Australia. It is on the Pacific Highway (Australia), Pacific Highway, approximately 550 km north of Sydney and 365 km south of Brisbane. The closest city to Woolgoolga is ...

New South Wales ) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , es ...

to near

Melbourne Melbourne ( ; Boonwurrung/Woiwurrung: ''Narrm'' or ''Naarm'') is the capital and most populous city of the Australian state of Victoria, and the second-most populous city in both Australia and Oceania. Its name generally refers to a met ...

in Victoria. Globoidnan A is a lignan found in ''E. globoidea''. This molecule has been found to inhibit the action of HIV

integrase Retroviral integrase (IN) is an enzyme produced by a retrovirus (such as HIV) that integrates—forms covalent links between—its genetic information into that of the host cell it infects. Retroviral INs are not to be confused with phage int ...

, an enzyme which is responsible for the introduction of

HIV The human immunodeficiency viruses (HIV) are two species of ''Lentivirus'' (a subgroup of retrovirus) that infect humans. Over time, they cause acquired immunodeficiency syndrome (AIDS), a condition in which progressive failure of the immune ...

viral

RNA Ribonucleic acid (RNA) is a polymeric molecule essential in various biological roles in coding, decoding, regulation and expression of genes. RNA and deoxyribonucleic acid ( DNA) are nucleic acids. Along with lipids, proteins, and carbohydra ...

into a host's cellular DNA. Image:Eucalyptus globoidea.jpg, ''Eucalyptus globoidea'' habit near Bermagui Image:Eucalyptus globoidea bark.jpg, Bark on ''E. globoidea'' near

Eden Eden may refer to: * Garden of Eden, the "garden of God" described in the Book of Genesis Places and jurisdictions Canada * Eden, Ontario * Eden High School Middle East * Eden, Lebanon, a city and former bishopric * Camp Eden, Iraq O ...

Image:Eucalyptus oblonga coppice Grosvenor Street.jpg, Coppice leaves after fire in

Ku-ring-gai Chase National Park Ku-ring-gai Chase National Park is a national park on the northern side of Sydney in New South Wales, Australia. The park is north of the Sydney central business district and generally comprises the land east of the M1 Pacific Motorway, sout ...

Image:Eucalyptus oblonga gumnuts Grosvenor Street.jpg, Fruit of ''Eucalyptus globoidea'' at

References

{{Taxonbar, from=Q5226294 globoidea Myrtales of Australia Trees of Australia Flora of New South Wales Flora of Victoria (Australia) Plants described in 1927 Taxa named by William Blakely