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Clematis viticella = Clematite bleue. [Italian clematis]. Duhamel du Monceau, M., 1700-1782 (Author) Redouté, Pierre Joseph, 1759-1840 (Artist Stock Photo - Alamy
Prof Joe Barry on Twitter: "Clematis about 6 weeks late. Climate change? @think_or_swim https://t.co/JsX8HJKR6w" / Twitter
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