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August 17, 2005 : Rudbeckia 'Herbstsonne'
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Keywords: Asteraceae | Rudbeckia 'Herbstsonne' | Roberts Creek
If you look up this plant via a search engine, you'll find there are at least three names bandied about for it: Rudbeckia laciniata 'Herbstsonne', Rudbeckia nitida 'Herbstsonne', and the one I've used, Rudbeckia 'Herbstsonne'. From what I've been able to determine so far, this plant is purported to be a cross between Rudbeckia laciniata and Rudbeckia nitida, so neither of the first two names can be valid, as they imply that only one species is in the genetic background of the cultivar. I'm still trying to verify that it is indeed a cross, though.
In any case, 'Herbstsonne' coneflower is a relative of the commonly-known black-eyed susan. Rosie Lerner at Purdue University has a small article on Rudbeckia that includes a comparison photograph of the two plants grown together. BBC Gardening also has some information about Rudbeckia 'Herbstsonne' from a gardening perspective.
In Botany Photo of the Day matters, I want to thank those of you who've submitted photos to the Flickr pool or the garden's forums. I'll be featuring a few of those photographs over the next few days, since I hadn't used any while I was on vacation or the past catch-up week.
Botany Resource Link: What is a Cultivar? via the Australian Cultivar Registration Authority
Posted by Daniel Mosquin at August 17, 2005 2:40 AM
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