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An interesting cultivar with dark shadows between the leaves. I like it but I think it is let down by a name that promises too much. Raised by Ed Skrocki in the USA
and introduced in 1981. Horst Diehm said: "large rosettes, in summer the leaves are dark - blackish - violet" It didn't produce distinctive colours with me. Volkmar Schara is quoted on Sempervivum List: "Larger rosettes that change their coloration noticeably throughout the year. The colors are often a bit watery blurred into each other. Something different! Erwin Geiger says: "An American hybrid from the 70s that conjures up almost black leaves with olive-green tips in spring. Unfortunately, this dark coloration is hardly visible in images taken on sunny days. The English term "Raven" stands for raven black. |
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| 7th November 2008 | ||
