Eucalyptus arborella
Twertup mallee | |
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Scientific classification ![]() | |
Kingdom: | Plantae |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Myrtales |
Family: | Myrtaceae |
Genus: | Eucalyptus |
Species: | E. arborella |
Binomial name | |
Eucalyptus arborella | |
Eucalyptus arborella, commonly known as Twertup mallet, is a tree that is native to Western Australia.[1]
The small tree typically grows to a height of 5 metres (16 ft) and does not form a lignotuber. The bark is a white-grey colour, sometimes becoming a coppery-pink and smooth over the length of the tree.[2]
The adult leaves have a concolorous, green, and glossy appearance. the leaves are alternate on petioles that are 0.5 to 1 centimetre (0.20 to 0.39 in) in length. The blade has a narrowly elliptical to narrowly oblanceolate shape with a length of 4 to 7 cm (1.6 to 2.8 in) and a width of 0.7 to 1.5 cm (0.28 to 0.59 in) with the base tapering to the petiole and a pointed apex. The inflorescences are unbranched and axillary forming 11 to 15 or more buds that form a tight cluster.[2]
E. arborella belongs in Eucalyptus subgenus Symphyomyrtus section Bisectae subsection Hadrotes because the coarsely bisected cotyledons, erect stamens and larger thick rimmed fruits. The subsection Hadrotes contains ten species of which eight do not have oil glands in the branchlet pith. Together these eight species form series Lehmannianae, a group that have fruit with exserted valves that have fused tips even after the seeds are lost, a feature also shared with the distantly related Eucalyptus cornuta.[3]
Of the eight species in series Lehmannianae four species; E. conferruminata, E. lehmannii, E. mcquoidii and E. arborella all have the buds in each an axillary cluster that is fused basally.[3]
It produces yellow-green flowers between March and May. It is found on breakaways, creeklines and slopes in a small area along the south coast in the Great Southern and Goldfields-Esperance regions of Western Australia between Ravensthorpe, Jerramungup and Gnowangerup where it grows in stony soils.[1] The bulk of the population is confined to the Fitzgerald River National Park.[2]
See also
References
- 1 2 "Eucalyptus arborella". FloraBase. Western Australian Government Department of Parks and Wildlife.
- 1 2 3 "Twertup mallet - Eucalyptus arborella Brooker & Hopper, Nuytsia 14: 336 (2002)". Euclid. CSIRO. Retrieved 11 June 2017.
- 1 2 "Eucalyptus lehmannii". Euclid. CSIRO. Retrieved 23 December 2017.