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Topic: Dicotyledons

I'm well outside my comfort zone talking about plant taxonomy, but on iSpot we've noticed that the vernacular name "Dicotyledons" is linked to the recommended name "Magnoliopsida". My understanding is that Magnoliopsida takes in a wider range of plants than just the dicots, and perhaps the associated vernacular name would be better as "Flowering plants"?

Martin Harvey
Biological Records Centre
CEH Wallingford

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Re: Dicotyledons

Hi Martin

I too am outside my comfort zone but it seems to me that we we have adopted the Cronquist system in which Dicotyledons are synonymous with Magnoliopsida. There are alternative ways of laying out the higher taxonomy of plants but they seem to include subclass levels and we don't list subclasses by default in our hierarchy so to use those systems would introduce a paradox. :)

I plan to link in all of the hierarchical levels, using Mike Weideli's work as a template, but I haven't got any time to do this at the moment :)

Best wishes,
Chris R.

Chris Raper, Manager of the UK Species Inventory, Angela Marmont Centre for UK Biodiversity,
Natural History Museum, Cromwell Road, London, SW7 5BD.  (tel: 020 7942 5894)
also Tachinid Recording Scheme (http://tachinidae.org.uk/)

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Re: Dicotyledons

Thanks Chris. It seems to me that the Cronquist system has been adopted for vernacular names but not for the scientific hierarchy, since as far as I can see the hierarchy includes the monocots in Magnoliopsida, rather than in a separate Class Liliopsida as per Cronquist. Class Liliopsida is in the dictionary but not in the hierarchy. But that's not a complaint, I understand the limitations on your time!

Martin Harvey
Biological Records Centre
CEH Wallingford