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Species profile—Homoranthus papillatus (mouse bush)

Classification

Plantae (plants) → Equisetopsida (land plants) → MyrtaceaeHomoranthus papillatus (mouse bush)

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Species details

Kingdom
Plantae (plants)
Class
Equisetopsida (land plants)
Family
Myrtaceae
Scientific name
Homoranthus papillatus Byrnes
Common name
mouse bush
WildNet taxon ID
16918
Nature Conservation Act 1992 (NCA) status
CR
Back on Track (BoT) status
Low
Conservation significant
Yes
Confidential
No
Endemicity
Native
Pest status
Nil
Short Notes
BRI 219775, status annotated by author
Description
Homoranthus papillatus is a low, compact, spreading shrub to about 1 m tall, sometimes with a strong odour. The leaves are opposite, very shortly petiolate, linear, curved, triangular in cross-section, 10 mm long by about 1 mm wide and thick, with oil dots; the surfaces are covered in minute papillae (visible under a microscope only). The flowers are pale yellow, 4 mm long, tubular, with five small petals and a long protruding style 6 to 9 mm long., they occur singly in the upper leaf axils on pedicels 1 to 2 mm long. Bracteoles that enclose the flower buds are 5 mm long, scarious, caducous. The calyx tube is 4 mm long and 1 mm diameter, glabrous, shiny, smooth and distinctly 5-ribbed. The calyx lobes are subulate to 3 mm long. The petals are orbicular, and about 1mm diameter. There are 10 stamens with the filaments about 0.5 mm long. There are 10 staminodes about 0.5 mm long. The ovary is unilocular, containing 8 to 10 ovules borne on a basal placenta. The fruit is dry, similar to the flower, containing 1 to 2 winged seeds (Byrnes, 1981; Stanley, 1986).
Homoranthus papillatus is similar Homoranthus montanus and the latter is known from the Granite Belt at Sundown National Park and Glen Aplin area, although it does not occur in Girraween National Park. Homoranthus papillatus differs from Homoranthus montanus by the absence of the minute papillae from the leaf surfaces and in its taller and more upright growth habit (Byrnes, 1981; Sparshott, 2007).
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Distribution
Homoranthus papillatus is restricted to Girraween National Park, chiefly in the vicinities of Mount Norman and The Pyramids (Queensland Herbarium, 2012).
Distributional limits
-26.7637222, 151.9605555
-28.8681839, 153.1305278
Range derivation
Range derived from extent of the taxon's verified records
Habitat
Homoranthus papillatus occurs in pockets of decomposed granite with other heathy shrubs, on high exposed rock pavements and in adjoining heathy eucalypt woodland (Queensland Herbarium, 2012).
Reproduction
Homoranthus papillatus flowers from August to November (Queensland Herbarium, 2012).
Threatening processes
Potential threats to Homoranthus papillatus are trampling by visitors due to its distribution on high visitation rock pavement areas, and inappropriate fire regimes (Sparshott, 2007).
Status notes
Homoranthus papillatus is listed as Vulnerable under the Queensland Nature Conservation Act 1992.
Notes
Occurs in the following Queensland pastoral districts: Darling Downs.
References
Byrnes, N. (1981). Notes on the genus Homoranthus. Austrobaileya 1 (4): 373.
Queensland Herbarium (2012). Specimen label information. Queensland Herbarium. Accessed 19/01/2012.
Sparshott, K. (2007). Protecting the values of Girraween National Park - Comprehensive Vegetation Report. Department of Environment and Resource Management.
Stanley, T.D. in Stanley, T.D. and Ross, E.M. (1986). Flora of South-eastern Queensland 2: 121.
Profile author
Ronald Booth (04/05/2012)

Other resources

The Australasian Virtual Herbarium (AVH)
Atlas of Living Australia

Data source

This profile data is sourced from the QLD Wildlife Data API using the Get species by ID function used under CC-By 4.0
https://apps.des.qld.gov.au/species/?op=getspeciesbyid&taxonid=16918

This information is sourced from the WildNet database managed by the Queensland Department of Environment and Science.

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Licence
Creative Commons Attribution 4.0 International (CC BY 4.0)
Last updated
23 October 2019
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