Euphrasia ruptura (former synonym: Euphrasia sp. Tamworth) is a presumed extinct plant from the genus Euphrasia within the family Orobanchaceae.

Euphrasia ruptura
Conservation status
Extinct  (EPBC Act)[1]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Lamiales
Family:	Orobanchaceae
Genus:	Euphrasia
Species:	†E. ruptura
Binomial name
†Euphrasia ruptura W.R.Barker
Synonyms
Euphrasia sp. Tamworth

It was first described in 1997 by William R. Barker from a single collection made in the Tamworth Area, Northern Tablelands, New South Wales in 1904. It is named after the Australian botanist Herman Montague Rucker Rupp who discovered this species.

Description

This perennial subshrub reaches a height of at least 26 centimetres. The branchlets are covered with hair and have 22 to 25 leave pairs. The length of the calyx reaches from 3.8 to 4.5 millimetres. The corolla measures from 8 to 10.8 millimetres. The color is unknown. The tube is about five millimetres long and the stamens with the anthers 0.9 x 1.7 millimetres.

Status

This plant is only known from two flowering branches collected in September 1904 in the North Western Slopes near Tamworth.

References

External links

• New South Wales Flora Online - Euphrasia ruptura
• Taxonomic studies in Euphrasia (Scrophulariaceae). VIII. E. ruptura, a name for a species apparently extinct in northeastern New South Wales

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