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''Euphrasa arguta'' is a plant from the genus ''Euphrasia'' (eyebrights) within the family Orobanchaceae. The species was last recorded in June 1904 near Tamworth, New South Wales, Australia, and was presumed extinct until rediscovered in 2008 by Forests worker Graham Marshall in NSW's Nundle State Forest.〔 〕 Some scientists consider that it is a variety of the threatened Rough Eyebright (''Euphrasia scabra''). Previously the whole genus ''Euphrasia'' was regarded as part of the family Scrophulariaceae. It was first described by Robert Brown in his reference work Prodromus Florae Novae Hollandiae et Insulae Van Diemen in 1810. ==Description== The erect stem of this annual herb reaches a height from 20 to 35 centimetres and is covered with dense hairs. The deeply lobed leaves are opposite. The upper stem leaves with a length of about six to fourteen millimetres and a width from 3.5 to 13 millimetres are ovate-ellyptic. The racemes consists of 50 to 90 flowers. The length of the usually scabrous calyx reaches from 5.5 to 7 millimetres. The corolla measures from ten to fourteen millimetres coloured from white to lilac with yellow markings. The tube is 6.7 to 8.5 millimetres long and the anthers 0.9 to 1.7 millimetres. The capsule has a length of 4 to 7.5 millimetres and is bristly at the upper half. Like the other eyebright species ''Euphrasia arguta'' is a partial parasite and is connected through a haustorium to the rootlets of other plants. The flowering period is from October to January. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Euphrasia arguta」の詳細全文を読む スポンサード リンク
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