Weedy Tulips - T. clusiana

Weedy Tulips - T. clusiana
Joey Russell (Mon, 30 Mar 2015 10:39:14 PDT)

You are all great! Not only are the Tulips on the hillside laughing but I
am too (and learning). Remind me, doesn’t pentaploid mean 5 homologous
pairs of chromosomes which is what gives "plants" their great diversity?
Plasticity I think the word is, leading to a great variety?

Joey Russell

-----Original Message-----
From: Jim McKenney
Sent: Monday, March 30, 2015 7:17 AM
To: Pacific Bulb Society
Subject: Re: [pbs] Weedy Tulips - T. clusiana

Bob Nold wrote: 'The contemporary (insofar as the publication date of the
monograph, 2013, can be considered contemporary) concept is the same as DC’s
concept. It has not changed. Tulipa clusiana DC is and always has been T.
clusiana DC. "
Isn't this a good example of confusing nomenclature and science? Yes, the
pentaploid form has been Tulipa clusiana since the time of DC. But the
combination of names "Tulipa clusiana DC " no longer means simply the
pentaploid form: it includes all the varies forms (diploids, triploids,
tetraploids, pentaploids).
To say that the modern concept is the same as de Candolle's is to overlook
the fact that de Candolle's name Tulipa clusiana was coined for a single
entity, yet our contemporary usage includes a number of other forms which
probably would have astonished de Candolle. And Tulipa stellata (later
determined to be a tetraploid form) in fact was known during de Candolle's
lifetime.
Jim McKenney

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