Hypericum undulatum, the wavy St Johns Wort, is a herbaceous perennial flowering plant native to western Europe and northern Africa. The specific name undulatum is Latin, meaning 'wavy' or 'undulated', referring, just as the common name, to the wavy leaf margins of the herb. The plant has a diploid number of 16 or 32.
Hypericum undulatum grows 1.5–12 cm (0.59–4.72 in) tall, typically erect or decumbent with a creeping or rooting base. The herb typically has numerous to few narrow stems, each with ...
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