Eucalyptus subangusta

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Eucalyptus subangusta
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Eucalyptus
Species:
E. subangusta
Binomial name
Eucalyptus subangusta
Synonyms [1]

Eucalyptus redunce var. subangustaBlakely

Eucalyptus subangusta is a species of tree, mallee or mallet that is endemic to the southwest of Western Australia. It has smooth bark, narrow lance-shaped leaves, flower buds in groups of up to nineteen, white flowers and cup-shaped to barrel-shaped fruit.

Contents

Description

Eucalyptus subangusta is a tree, a mallee or a mallet (depending on subspecies) that typically grows to a height of 2–9 m (6 ft 7 in–29 ft 6 in) and has smooth grey to brownish or pink bark. Young plants and coppice regrowth have dull green leaves that are 50–95 mm (2.0–3.7 in) long and 15–40 mm (0.59–1.57 in) wide. Adult leaves are the same shade of dull green to greyish on both sides, narrow lance-shaped, 45–120 mm (1.8–4.7 in) long and 6–18 mm (0.24–0.71 in) wide, tapering to a petiole 5–18 mm (0.20–0.71 in) long. The flower buds are arranged in leaf axils in groups of between nine and seventeen on an unbranched peduncle 5–15 mm (0.20–0.59 in) long, the individual buds on pedicels 1–3 mm (0.039–0.118 in) long. Mature buds are spindle-shaped to cylindrical, 6–10 mm (0.24–0.39 in) long and 2–4 mm (0.079–0.157 in) wide with a narrow conical to oblong operculum. Flowering occurs in most months and the flowers are white. The fruit is a woody, cup-shaped to barrel-shaped capsule 4–6 mm (0.16–0.24 in) long and wide with the valves near rim level. [2] [3] [4]

Taxonomy and naming

Eucalyptus redunca var. subangusta was first formally described in 1934 by William Blakely in his book A Key to the Eucalypts from specimens collected by William Vincent Fitzgerald near Cunderdin. [5] In 1991, Ian Brooker and Stephen Hopper raised the variety to species status as Eucalyptus subangusta in the journal Nuytsia . [3] [6] In the same publication, Brooker and Hopper described four subspecies and the names have been accepted by the Australian Plant Census:

Distribution and habitat

Subspecies cerina grows in low woodland, mallee and shrubland in the eastern central wheatbelt between Yelbeni to east of Southern Cross. [3] [9] Subspecies pusilla grows in fine textured, stony soils in the northern wheatbelt, between Wongan Hills, Mullewa and Paynes Find. [3] [12] Subspecies subangusta grows on sandplains and hills, usually on yellow or red sand in low to tall mallee. It is the most widespread and abundant of the four and occurs in the central and northern wheatbelts from north of Kalbarri to south-east of Norseman. [3] [14] Subspecies virescens is only known a few scattered locations in the eastern part of the central wheatbelt between Manmanning and Watheroo. [3] [17]

Conservation status

This eucalypt species and three of its subspecies are classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife [4] but subspecies virescens is classified as "Priority Three" [17] meaning that it is poorly known and known from only a few locations but is not under imminent threat. [18]

See also

Related Research Articles

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<i>Eucalyptus calcicola</i> Species of eucalyptus

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<i>Eucalyptus capillosa</i> Species of eucalyptus

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<i>Eucalyptus gardneri</i> Species of eucalyptus

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<i>Eucalyptus myriadena</i> Species of eucalyptus

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Eucalyptus phenax, commonly known as green dumosa mallee or white mallee, is a species of mallee that is endemic to southern Australia. It has smooth bark, lance-shaped adult leaves, flower buds in groups of seven or nine, white flowers and cup-shaped to cylindrical fruit.

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Eucalyptus vegrandis, commonly known as the Ongerup mallee, is a species of mallee that is endemic to the south-west of Western Australia. It has smooth bark, linear to lance-shaped adult leaves, flower buds in groups of seven, creamy white flowers and cup-shaped or conical fruit.

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<i>Eucalyptus celastroides</i> Species of eucalyptus

Eucalyptus celastroides, commonly known by the Noongar name of mirret, is a species of eucalypt that is endemic to the south-west of Western Australia. It is a mallee, rarely a tree, and has rough bark on about half of the lower half of its tunk, smooth above, narrow lance-shaped adult leaves, flower buds in groups of seven or nine, white flowers and urn-shaped fruit.

<i>Eucalyptus crucis</i> Species of grass

Eucalyptus crucis is a species of mallee that is endemic to Western Australia. There are three subspecies, commonly known as silver mallee or Southern Cross mallee,, narrow-leaved silver mallee, and Paynes Find mallee,. It has rough bark that is shed in curling flakes, more or less round, glaucous juvenile leaves, egg-shaped intermediate leaves and lance-shaped adult leaves. The type of bark and the proportion of juvenile, intermediate and adult leaves in the crown of mature plants varies with subspecies. The flower buds are arranged in groups of seven in leaf axils, the flowers are whitish to pale yellow and the fruit is a conical to hemispherical capsule.

<i>Eucalyptus densa</i> Species of eucalyptus

Eucalyptus densa is a species of mallee or mallet that is endemic to Western Australia. It has smooth greyish bark that is shed in curly strips, linear to narrow lance-shaped adult leaves, long, spindle-shaped flower buds in groups of seven or nine, pale yellow or lemon-coloured flowers and conical, cylindrical or barrel-shaped fruit.

References

  1. 1 2 "Eucalyptus subangusta". Australian Plant Census. Retrieved 2 January 2020.
  2. 1 2 "Eucalyptus subangusta subsp. subangusta". Euclid: Centre for Australian National Biodiversity Research. Retrieved 28 May 2020.
  3. 1 2 3 4 5 6 7 8 9 10 Brooker, M. Ian H.; Hopper, Stephen (1991). "A taxonomic review of Eucalyptus wandoo, E. redunca and allied species (Eucalyptus series Levispermae". Nuytsia. 8 (1): 104–118. Retrieved 2 January 2020.
  4. 1 2 "Eucalyptus subangusta". FloraBase . Western Australian Government Department of Parks and Wildlife.
  5. ↑ "Eucalyptus redunca var. subangusta". APNI. Retrieved 2 January 2020.
  6. ↑ "Eucalyptus subangusta". APNI. Retrieved 2 January 2020.
  7. ↑ "Eucalyptus subangusta subsp. cerina". Australian Plant Census. Retrieved 2 January 2020.
  8. ↑ "Eucalyptus subangusta subsp. cerina". Euclid: Centre for Australian National Biodiversity Research. Retrieved 2 January 2020.
  9. 1 2 "Eucalyptus subangusta subsp. cerina". FloraBase . Western Australian Government Department of Parks and Wildlife.
  10. ↑ "Eucalyptus subangusta subsp. pusilla". Australian Plant Census. Retrieved 2 January 2020.
  11. ↑ "Eucalyptus subangusta subsp. pusilla". Euclid: Centre for Australian National Biodiversity Research. Retrieved 2 January 2020.
  12. 1 2 "Eucalyptus subangusta subsp. cerina". FloraBase . Western Australian Government Department of Parks and Wildlife.
  13. ↑ "Eucalyptus subangusta subsp. subangusta". Australian Plant Census. Retrieved 2 January 2020.
  14. 1 2 "Eucalyptus subangusta subsp. subangusta". FloraBase . Western Australian Government Department of Parks and Wildlife.
  15. ↑ "Eucalyptus subangusta subsp. virescens". Australian Plant Census. Retrieved 2 January 2020.
  16. ↑ "Eucalyptus subangusta subsp. virescens". Euclid: Centre for Australian National Biodiversity Research. Retrieved 2 January 2020.
  17. 1 2 3 "Eucalyptus subangusta subsp. cerina". FloraBase . Western Australian Government Department of Parks and Wildlife.
  18. ↑ "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 2 January 2020.
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