Indicative distribution
The areas shown in pink and/purple are the sub-regions where the species or community is known or predicted to occur. They may not occur thoughout the sub-region but may be restricted to certain areas.
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click here to see geographic restrictions).
The information presented in this map is only indicative and may contain errors and omissions.
Scientific name: Deyeuxia appressa
Profile last updated:
13 Nov 2024
Description
An erect perennial grass to 0.9 m high. Leaves are 2 - 4 mm wide, deeply grooved, with a rough lower surface and a hairy upper surface. The leaves have a 1 - 2 mm long ligule (appendage towards the base of leaf) that is membranous, truncate and jagged. The moderately dense panicle (compound inflorescence) is 20 - 30 cm long, possessing spikelets that are about 3.5 mm long. Glumes (two bracts at the base of spikelets) are slightly unequal, 1-nerved, keeled, and very acute.
Distribution
A highly restricted NSW endemic known only from two pre-1942 records in the Sydney area. Was first collected in 1930 at Herne Bay, Saltpan Creek, off the Georges River, south of Bankstown. Was then collected in 1941 from Killara, near Hornsby. Has not been collected since and may now be extinct in the wild due to the level of habitat loss and development that has occurred within these areas.
Habitat and ecology
- Given that D. appressa hasn’t been seen in over 60 years, almost nothing is known of the species' habitat and ecology.
- Flowers spring to summer and is mesophytic (grows in moist conditions).
Regional distribution and habitat
Click on a region below to view detailed distribution, habitat and vegetation information.
Threats
- If still extant, given extremely small population size, likely to be threatened by local extinction due to environmental and demographic uncertainty.
- Additional threats are likely to include habitat loss and degradation, weed invasion and changes to moisture levels.
- Insufficient understanding of distribution.
- Insufficient understanding of threats.
Recovery strategies
A Saving Our Species conservation project is currently being developed for this species and will be available soon. For information on how you can contribute to this species' recovery, see the Activities to assist this species section below.
Activities to assist this species
- Survey the known collection locations to determine whether the species is still extant.
Information sources
- Harden, G.J. (ed.) (1993) Flora of New South Wales Vol. 4. UNSW Press, Kensington, NSW.
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