Authors: C. Stace, R. van der Meijden (ed.) & I. de Kort (ed.)
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Scientific name:

Hypericum linariifolium

Vernacular name:

St John's-wort, Toadflax-leaved


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Hypericum humifusum - St John's-wort, Trailing
Hypericum pulchrum - St John's-wort, Slender

Toadflax-leaved St John's-wort

Scientific name: Hypericum linariifolium Vahl

Diagnostic features
Erect to ascending glabrous perennial with thin faintly 2-lined stems to 40cm.
Leaves up to 30mm, linear-lanceolate to linear.
Flowers 15-20mm across, petals twice as long as or longer than sepals, bright yellow.
Black glands sessile on leaves, stalked on sepals and petals.

Chromosomenumber: 2n=16.

Habitat
Native; rocky acid slopes.

Distribution
Rare in Southwest England, Wales and Channel Islands.

This species is keyed out on Page 3878 in the Text Key.

Hybrids
- Hypericum humifusum x Hypericum linariifolium is the probable parentage of intermediates (notably in petal length) that occur in Channel Islands with both parents. Possibly endemic.

Hypericum linariifolium
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St John's-wort, Toadflax-leaved
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