Euphrasia arguta - profile

Indicative distribution


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Key:
known
predicted
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. ( click here to see geographic restrictions). The information presented in this map is only indicative and may contain errors and omissions.
Scientific name: Euphrasia arguta
Conservation status in NSW: Critically Endangered
Commonwealth status: Critically Endangered
Gazetted date: 02 Dec 2011
Profile last updated: 05 Mar 2018

Description

Euphrasia arguta is an erect annual herb ranging in height from 20-35 cm. Collectively, the Euphrasia are commonly known as 'eyebrights'. Its branches are densely covered with stiff hairs and the leaf margins usually have 2-4 pairs of teeth. The flowers vary in colour from white to lilac with yellow, and are borne on flower spikes of 50 to 90 flowers.

Distribution

Euphrasia arguta was rediscovered in the Nundle area of the NSW north western slopes and tablelands in 2008. Prior to this, it had not been collected for 100 years. Historically, Euphrasia arguta has only been recorded from relatively few places within an area extending from Sydney to Bathurst and north to Walcha. The Royal Botanic Gardens Specimen Register records an additional location reported and vouchered in 2002 from near the Hastings River; and Euphrasia arguta was also recorded from the Barrington Tops in 2012.

Habitat and ecology

  • Historic records of the species noted the following habitats: 'in the open forest country around Bathurst in sub humid places', 'on the grassy country near Bathurst', and 'in meadows near rivers'.
  • Plants from the Nundle area have been reported from eucalypt forest with a mixed grass and shrub understorey; here, plants were most dense in an open disturbed area and along the roadside, indicating the species had regenerated following disturbance.
  • The number of plants at a given site may vary over time depending on the season and disturbance history.
  • Near Nundle, local populations had apparently declined at sites that had been disturbed twice within three years, in contrast with sites that were disturbed only once.
  • Euphrasia arguta has an annual habit and has been observed to die off over the winter months, with active growth and flowering occurring between January and April.
  • As with other species of Euphrasia, this species is semi-parasitic and attaches to the roots of other associated plants.

Regional distribution and habitat

Click on a region below to view detailed distribution, habitat and vegetation information.


Threats

Recovery strategies

Activities to assist this species

IBRA Bioregion IBRA Subregion Known or predicted Geographic restrictions region
NandewarPeel Known None
New England TablelandsWalcha Plateau Known None
NSW North CoastBarrington Known None
NSW North CoastMummel Escarpment Predicted None
NSW North CoastTomalla Predicted None
NSW North CoastUpper Manning Predicted None
NSW South Western SlopesCapertee Valley Predicted None
NSW South Western SlopesInland Slopes Predicted None
South Eastern HighlandsCapertee Uplands Predicted None