Euphrasia australis

Detailed description

Slender sparingly-branched annual herb 50-200 mm tall, branches bifariously white-pubescent and more or less glandular-pilose, internodes very elongated. Leaves sessile, up to 10-12 x 7-8 mm, more or less obovate-cuneate with 2-3 pairs of acute teeth, sometimes almost suborbicular with teeth obtuse, glabrous or with sparse long glandular hairs, sometimes sparsely white-pubescent, margins thickened and revolute. Flowers, few towards the tips of the branches, pedicels short or up to 10 mm in flower, usually elongated and up to 25 mm in fruit. Calyx 4-6 mm long, sometimes enlarged in fruit up to 12 x 8 mm, pilose with long glandular hairs and sometimes also white-pubescent; lobes acute to obtuse, margins and midribs thickened. Corolla white, approximately 10-12 mm long; tube slightly to much longer than calyx; lobes of lower lip 1.5-3 mm wide, entire. Anthers yellow to golden brown, margins sparsely hairy to glabrous, awns slender, almost equal. Capsule approximately equal to calyx or much shorter, approximately 5-6 x 5 mm, obovate, finely setose at apex; seeds approximately 4-6 per locule.