Bright yellow flowers of Square-Stalked St. John's Wort / Hypericum tetrapterum = H. quadratum (Sept.) growing in damp ground. Read additional notes.

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Initially thought this was Marsh St. John's Wort / Hypericum elodes considering the soggy ground these were living in, but this colony of plants have square 'winged' stalks. MSJT is also more hairy, and the leaves rounded - also some of the top step leaves in these plants were not very pointed. The square 4-winged stem does it for me though. Synonymous with Hypericum quadratum,& Hypericum acutum.

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Size: 5504px × 7254px
Location: cornwall, uk
Photo credit: © Marcus Harrison - plants / Alamy / Afripics
License: Royalty Free
Model Released: No

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