Corymbia jacobsiana

Last updated

Jacob's bloodwood
Corymbia jacobsiana.jpg
Corymbia jacobsiana near Pine Creek
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Corymbia
Species:
C. jacobsiana
Binomial name
Corymbia jacobsiana
Synonyms [1]

Eucalyptus jacobsianaBlakely

Corymbia jacobsiana, commonly known as Jacob's bloodwood or the stringybark bloodwood, [2] is a species of tree that is endemic to the Northern Territory. It has rough, stringy bark on the trunk and branches, lance-shaped to elliptical or curved adult leaves, flower buds in groups of three or seven, creamy white flowers and urn-shaped fruit.

Contents

Description

Corymibia jacobsiana is a tree that typically grows to a height of 20 m (66 ft) and forms a lignotuber and rhizomes. It has rough, stringy, yellow-brown to grey-brown bark on the trunk and branches. Young plants and coppice regrowth have hairy, glossy dark green leaves that are paler on the lower surface, arranged in opposite pairs, linear, 45–105 mm (1.8–4.1 in) long and 2–8 mm (0.079–0.315 in) wide on a short petiole. Adult leaves are arranged alternately, glossy dark green above, much paler on the lower surface, lance-shaped to elliptical or curved, 53–137 mm (2.1–5.4 in) long and 7–20 mm (0.28–0.79 in) wide, tapering to a petiole 4–23 mm (0.16–0.91 in) long. The flower buds are arranged on the ends of branchlets on a branched peduncle 4–13 mm (0.16–0.51 in) long, each branch of the peduncle with three or seven buds on pedicels 2–8 mm (0.079–0.315 in) long. Mature buds are oval to pear-shaped or spherical, about 4 mm (0.16 in) long and 2 mm (0.079 in) wide with a rounded to conical or beaked operculum. The tree is thought to flower between February and April and the flowers are creamy white. The fruit is a woody urn-shaped capsule 7–11 mm (0.28–0.43 in) long and 4–8 mm (0.16–0.31 in) wide with the valves enclosed in the fruit. The seeds are flattened, dull to semi-glossy and red or red-brown and saucer-shaped. [2] [3] [4] [5] [6]

Corymbia jacobsiana has no close relatives. [2] It is solated from all other bloodwoods by the combination of rough stringybark and sparsely hairy juvenile leaves, carpeted on the underside with white hairs. [7]

Taxonomy and naming

Jacob's bloodwood was first formally described by the botanist William Blakely in 1934 in his book, A Key to the Eucalypts and given the name Eucalyptus jacobsiana. The type specimens were collected by "Dr. M. R. Jacobs" 10 mi (16 km) north of Pine Creek in 1933. [6] [8] Jacobs was a distinguished forester and the Principal of the Australian Forestry School in Canberra from 1945 to 1961. [2] Botanists Ken Hill and Lawrie Johnson were the first to define the genus Corymbia in 1995, identifying the bloodwoods, ghost gums and spotted gums as a group distinct from Eucalyptus. They changed the name of this species to Corymbia jacobsiana. [5] [9]

Distribution

Corymbia jacobsiana occurs throughout the top end of the Northern Territory, usually in monsoonal woodland areas and usually as part of a tropical savannah woodland mix with eucalpyts and cypress, growing in sand or clay soils or in dissected sandstone. [10] It has an erratic distribution around Pine Creek, Tipperary Station and further east in Arnhem Land, often found with Corymbia arnhemensis and C. nesophila . [2]

The plant's rhizomes allow it to form dense clones following fires, and that later thin out to form woodlands. [11]

See also

Related Research Articles

<i>Corymbia polycarpa</i> Species of plant

Corymbia polycarpa, also known as the long-fruited bloodwood or small-flowered bloodwood, is a species of tree that is endemic to northern Australia. Indigenous Australians of different language groups have different names for the tree. The Nungali peoples know the tree as narrga or gunjid, the Mulluk-Mulluk know it as dawart, the Yangman know it as bodog, the Gurindji peoples as jadburru and the Wagiman as jagatjjin. It is a medium-sized tree with rough, tessellated bark on the trunk and branches, lance-shaped to curved adult leaves, flower buds in groups of seven or nine, white or cream-coloured flowers and barrel-shaped fruit.

<i>Corymbia henryi</i> Species of plant

Corymbia henryi, commonly known as the large-leaved spotted gum, is a species of small to medium-sized tree that is endemic to north-eastern Australia. It has smooth, mottled bark, lance-shaped adult leaves, flower buds in groups of three, white or lemon yellow flowers and barrel-shaped to urn-shaped fruit.

<i>Corymbia trachyphloia</i> Species of plant

Corymbia trachyphloia, commonly known as the brown bloodwood, is a species of small to medium-sized tree that is endemic to eastern Australia. It has rough, tessellated bark on the trunk, often also on the larger branches, lance-shaped adult leaves, flower buds in groups of seven, white flowers and urn-shaped fruit.

Corymbia greeniana is a species of tree that is endemic to northern Australia. It has rough bark on some or all of the trunk and larger branches, smooth bark above, broadly lance-shaped to egg-shaped adult leaves, flower buds usually in groups of seven, creamy white flowers and urn-shaped fruit with a distinct neck.

<i>Corymbia abbreviata</i> Species of plant

Corymbia abbreviata, also known as the scraggy bloodwood, is a species of straggly tree that is native to Western Australia and the Northern Territory. It has rough bark, a crown of stiff leaves arranged in opposite pairs, flower buds usually in crowded groups on the ends of branchlets and urn-shaped fruit.

<i>Corymbia aspera</i> Species of plant

Corymbia aspera, commonly known as the rough-leaved ghost gum, rough leaf range gum, desert bloodwood, Brittle Range gum in Western Australia, or snappy gum in the Northern Territory is a species of tree that is endemic to northern Australia. It has smooth white bark, sometimes with a short stocking of rough bark near the base, a crown of sessile juvenile, heart-shaped or egg-shaped leaves, flower buds in groups of seven, creamy white flowers and cup-shaped, barrel-shaped or cylindrical fruit.

<i>Corymbia bleeseri</i> Species of plant

Corymbia bleeseri, commonly known as the glossy-leaved bloodwood or the smooth-stemmed bloodwood, is a species of tree that is endemic to northern Australia. It has thin, rough bark on part or all of the trunk, smooth bark above, lance-shaped to curved adult leaves, flower buds in groups of seven, creamy white flowers and barrel-shaped fruit.

<i>Corymbia collina</i> Species of plant

Corymbia collina, commonly known as the silver-leaved bloodwood, is a species of tree that is endemic to Western Australia. It has thin patchy rough bark on some or all of the trunk, smooth white to pale grey bark above, lance-shaped to curved adult leaves, flower buds in groups of seven, creamy white flowers and barrel-shaped fruit.

<i>Corymbia eremaea</i> Species of plant

Corymbia eremaea, commonly known as mallee bloodwood, hill bloodwood and centre range bloodwood, is a small, mallee-like tree that is endemic to central Australia. Indigenous Australians know the plant as muur-muurpa. It has rough, evenly tessellated bark, lance-shaped leaves, oval to pear-shaped flower buds arranged on a branching peduncle and urn-shaped fruit.

<i>Corymbia erythrophloia</i> Species of plant

Corymbia erythrophloia, commonly known as the red bloodwood, variable-barked bloodwood, red-barked bloodwood or gum-topped bloodwood, is a species of tree that is endemic to Queensland. It has rough bark on the trunk and branches, egg-shaped or lance-shaped adult leaves, flower buds in groups of seven, creamy white flowers and urn-shaped to spherical fruit.

<i>Corymbia ferriticola</i> Species of plant

Corymbia ferriticola, commonly known as the Pilbara ghost gum, is a species of tree or a mallee that is endemic to Western Australia. It has smooth bark, lance-shaped adult leaves, flower buds in groups of seven, creamy white flowers and shortened spherical to cylindrical fruit.

<i>Corymbia foelscheana</i> Species of plant

Corymbia foelscheana, commonly known as the broad-leaved bloodwood, fan-leaved bloodwood or smooth-barked bloodwood, is a species of small tree that is endemic to northern Australia. It has thin, rough, tessellated bark on some or all of the trunk, smooth bark above, broadly egg-shaped to broadly lance- shaped adult leaves, flower buds usually in groups of seven, creamy white flowers and urn-shaped fruit.

<i>Corymbia gilbertensis</i> Species of plant

Corymbia gilbertensis, commonly known as the Gilbert River ghost gum or Gilbert River box, is a species of tree that is endemic to tropical far north Queensland. It has rough, tessellated bark on the lower part of the trunk, smooth bark above, a crown of juvenile, intermediate and adult leaves, flower buds mostly in groups of seven, creamy white flowers and cup-shaped to barrel-shaped fruit.

Corymbia lamprophylla, commonly known as the shiny-leaved bloodwood, is a species of tree that is endemic to central Queensland. It has rough, tessellated bark on the trunk and larger branches, lance-shaped adult leaves, flower buds in groups of seven, creamy white flowers and urn-shaped fruit.

<i>Corymbia latifolia</i> Species of plant

Corymbia latifolia, commonly known as the round-leaved bloodwood, round leaf bloodwood, wubam and other names in indigenous languages, is a species of tree that is endemic to northern Australia. It has thin, rough bark over part or all of the trunk, smooth bark above, triangular or broadly egg-shaped adult leaves, flower buds in groups of seven, creamy white flowers and urn-shaped fruit.

<i>Corymbia nesophila</i> Species of plant

Corymbia nesophila, commonly known as the Melville Island bloodwood, is a species of tree that is endemic to northern Australia. It has rough, tessellated bark on the trunk and branches, lance-shaped or curved adult leaves, flower buds in groups of seven, creamy white flowers and urn-shaped fruit.

Corymbia polysciada, commonly known as the apple gum, paper-fruited bloodwood or bolomin, is a species of tree that is endemic to the Top End of the Northern Territory. It has rough, tessellated bark on some or all or the trunk, smooth bark above, egg-shaped to broadly lance-shaped adult leaves, flower buds in groups of seven, creamy white flowers and cup-shaped, cylindrical or barrel-shaped from on long pedicels.

Corymbia porrecta, commonly known as the grey bloodwood, is a species of small tree that is endemic to the Northern Territory. It has rough, tessellated bark on the trunk and branches, broadly lance-shaped to egg-shaped adult leaves, flower buds usually in groups of seven, creamy white flowers and urn-shaped to barrel-shaped fruit.

Corymbia novoguinensis is a species of tree that is native to New Guinea, some Torres Strait Island and the Cape York Peninsula. It has rough bark on the trunk and branches, lance-shaped adult leaves, flower buds in groups of seven, creamy white flowers and urn-shaped to barrel-shaped fruit.

Eucalyptus imitans, commonly known as the Illawarra stringybark, is a species of small tree that is endemic to New South Wales. It has rough, stringy, greyish bark on the trunk and larger branches, lance-shaped, elliptic to egg-shaped or curved adult leaves, flower buds in groups of between nine and fifteen, white flowers and hemispherical fruit. It is found on near-coastal tablelands inland from the south coast.

References

  1. 1 2 "Corymbia jacobsiana". Australian Plant Census. Retrieved 15 February 2020.
  2. 1 2 3 4 5 "Corymbia jacobsiana (Blakely) K.D.Hill & L.A.S.Johnson". NT Flora. Northern Territory Government. 2013. Retrieved 2 October 2016.
  3. "Corymbia jacobsiana". Euclid: Centre for Australian National Biodiversity Research. Retrieved 6 June 2020.
  4. Chippendale, George M. "Eucalyptus jacobsiana". Australian Biological Resources Study, Department of Agriculture, Water and the Environment, Canberra. Retrieved 15 February 2020.
  5. 1 2 Hill, Kenneth D.; Johnson, Lawrence A.S. (13 December 1995). "Systematic studies in the eucalypts. 7. A revision of the bloodwoods, genus Corymbia (Myrtaceae)". Telopea. 6 (2–3): 225–226. doi: 10.7751/telopea19953017 .
  6. 1 2 "Corymbia jacobsiana (Blakely) K.D. Hill & L.A.S. Johnson, Telopea 6: 225 (1995)". Eucalink. Royal Botanic Garden, Sydney. Retrieved 1 October 2016.
  7. "More about Corymbia". Euclid. Centre for Plant Biodiversity Research. Retrieved 3 October 2016.
  8. "Eucalyptus jacobsiana". APNI. Retrieved 15 February 2020.
  9. "Corymbia jacobsiana". APNI. Retrieved 15 February 2020.
  10. "Occurrence record: DNA D0131761 Corymbia jacobsiana". Australia's Virtual Herbarium. Retrieved 3 October 2016.
  11. P. J. Keane (2000). Diseases and Pathogens of Eucalypts. CSIRO publishing. ISBN   9780643065239.