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Species profile—Calytrix gurulmundensis

Classification

Plantae (plants) → Equisetopsida (land plants) → MyrtaceaeCalytrix gurulmundensis

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Species details

Kingdom
Plantae (plants)
Class
Equisetopsida (land plants)
Family
Myrtaceae
Scientific name
Calytrix gurulmundensis Craven
WildNet taxon ID
17762
Alternate name(s)
yellow calytrix
Nature Conservation Act 1992 (NCA) status
Vulnerable
Environment Protection and Biodiversity Conservation Act 1999 (EPBC) status
Vulnerable
Back on Track (BoT) status
Low
Conservation significant
Yes
Confidential
No
Endemicity
Native
Pest status
Nil
Short Notes
BRI 227673, status annotated by author
Description
Calytrix gurulmundensis is a shrub growing to 2 m tall. The leaves are closely to widely spaced, spreading-ascending to spreading, with stipules to 0.3 mm long and the petiole up to 1 mm long. The leaf blade is linear to narrowly elliptic, 4 to 11 mm long by 0.6 to 1 mm wide. . The leaf margin is entire to ciliate, the base gradually tapering to the petiole, the apex subtruncate to obtuse. The inflorescences are clustered at the ends of the branchlets. Each flower consists of a 9 to 13 mm long floral tubes which has the sepals, petals and stamens at the tip. Two papery scale-like bracts of about 5 to 8 mm long surround the base of the tube. The 5 sepals are more or less circular and measure 2 to 3 mm long by 2 to 3.5 mm wide. The tip of each sepal has a fine, slender, spreading hair-like filament up to 15 mm long. Flowers have cream petals with yellow at the base, but can also be white, pinkish-white or yellow, and are up to 11 mm long and 3 mm wide. The petals are lance shaped to narrowly elliptic and measure 8 to 11 mm long by 2 to 3 mm wide. The filaments of the numerous stamens are yellow and 3 to 8 mm long.
Calytrix gurulmundensis is very closely related to C. islensis, however is distinguished by its depressed angular-ovate leaf blades (in transverse section) compared to the extremely broadly obtriangular in C. islensis (Craven, 1987).
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Distribution
Calytrix gurulmundensis is restricted to south eastern Queensland. The species is known from Gurulmundi, Guluguba and Barakula districts, and occurs in the Gurulmundi and Barakula State Forests (Queensland Herbarium, 2012).
Distributional limits
-26.1445322, 149.8836111
-26.425, 150.342768
Range derivation
Range derived from extent of the taxon's verified records
Habitat
Calytrix gurulmundensis is recorded as occurring in open shrubland with sparse, stunted Eucalyptus, Casuarina and Acacia spp. and in Triodia hummock grassland with scattered shrubs on shallow red gravelly soil; and on sandstones. The soils are usually well drained, usually shallow and either gravelly sandy clay or sandy in texture (Craven, 1987; Halford, 1996; DSEWPC, 2012; Queensland Herbarium, 2012).
Behaviour
Within Gurulmundi State Forest grader activity is suggested to have moved the species along tracks so that its distribution covers an area of several square kilometres. Plants are stated to be denser in sunlit areas than in shade, suggesting the species is tolerant of disturbance but shade sensitive (Unidel 2009).
Reproduction
Flowering in Calytrix gurulmundensis occurs from July to October (Craven, 1987; Queensland Herbarium, 2012)
Threatening processes
Threats to Calytrix gurulmundensis include: vegetation clearing; increasing fragmentation and loss of remnants; changed fire regimes; quarrying; and inappropriate timber harvesting. Some of the populations are on or near roadsides and have been disturbed by road construction and the removal of gravel from their habitat for road maintenance (Halford, 1996; DSEWPC, 2012).
Status notes
Calytrix gurulmundensis is listed as Vulnerable under the Environment and Biodiversity Conservation Act 1999 and Vulnerable under the Queensland Nature Conservation Act 1992.
Management recommendations
Regional and local priority actions to support the recovery of Calytrix gurulmundensis are outlined by DSEWPC (2012). A summary of these include: avoid habitat loss, disturbance and modification (e.g. monitor known populations to identify key threats; minimise adverse impacts from land use at known sites; identify populations of high conservation priority); manage fire (develop and implement suitable fire management strategy, identify appropriate intensity and interval for fire to promote seed germination); increase conservation information (raise awareness of C. gurulmundensis); and enable recovery of additional sites and/or populations (e.g. investigate options for linking, enhancing or establishing additional populations; undertake appropriate seed collection and storage).
Additional management for the protection of C. gurulmundensis includes: the establishment of a protective buffer (0.3 ha) that excludes clearing with all C. gurulmundensis at least 25 m inside the buffer (Halford, 1996).
Notes
Occurs in the following Queensland pastoral districts: Darling Downs, Leichhardt.
References
Craven, L.A. (1987). A taxonomic revision of Calytrix Labill. (Myrtaceae). Brunonia 10 (1): 79-80.
Department of Sustainability, Environment, Water, Population and Communities (DSEWPC) (2012). Calytrix gurulmundensis in Species Profile and Threats Database, Department of Sustainability, Environment, Water, Population and Communities, Canberra. Accessed 2/03/2012. http://www.environment.gov.au/sprat.
Halford, D. (1996). Calytrix gurulmundensis Species Management Profile. Department of Natural Resources, Brisbane.
Queensland Herbarium (2012). Specimen label information. Queensland Herbarium. Accessed 06/03/2012.
Unidel Energy and Infrastructure (Unidel) (2009). Queensland Curtis LNG Project Upstream Component Draft Flora and Fauna Assessment. [Online]. http://qclng.com.au/uploads/docs/eis/appendix/Appendix-3.2-GF-Terrestrial-Freshwater-Flora-Fauna-04.pdf.
Profile author
Lynise Wearne (05/03/2012)

Other resources

Species Profile and Threats Database (SPRAT)
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=17762

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
25 January 2022
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