Hypericum perforatum (common St. John's-wort) leaf. Curtis and Lersten. 1990. New Phytol. 114:571-580.
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| Curtis, Lersten, and Nowak 2002 rev. 2015 | |||||
Hypericum perforatum (common St. John's-wort) leaf. Curtis and Lersten. 1990. New Phytol. 114:571-580. |
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