Dear collegues,
Kees Troostheide drew my attention to papers by Donald Les (1988, 1989)
in Systematic Botany 13 (509-518) and 14 (254-262) on the evolution of
achene morphology in Ceratophyllum.
My specimen is very similar to the far-eastern species C. platyacanthum.
However, in C. demersum, 'winged' phenotypes may occur as well. So, I
feel we are on the right track now.
Thanks for comments.
Cheers JP
Dr. Jan Peter PALS
Amsterdam Archaeological Centre, dept. Archaeobotany
Universiteit van Amsterdam
Postal address: Turfdraagsterpad 9
NL 1012 XT Amsterdam
Office: Oudezijds Achterburgwal 237, 3.21
tel. +31 20 525 5811/5830
fax +31 20 525 5831
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