cotyledons revisited

Joe Clyde and the well known botanist
Impressed by the verdict of the self appointed judge I looked again 
in several books Although I have not heard many if any arguments why 
the first green leaf is the cotyl here are my arguments against:
1.
I looked in several books and found pictures of  
germinating Peperomia Sagitaria Allium and Yucca( all monocots)
All named the structure connected with the seed and ending in the 
haustorium, the cotyledon.I could not find a single picture naming it 
otherwise< Could you give me the pages Joe were  you did find it. 
2.
 The haustorium sucks food from the endosperm It is no coincidence 
that. the greek word for suckers from squid is cotyledon!
3.
 Joe states that the first leaf is the cotyl as it is already 
present in the embryo.  If one looks under the microscope in a 
germinating hosta seed( as I did) no trace of a leaf can be found 
However if one splits halves of a bean (the dicotot) one finds inside 
small leaves so the opposite is true!
4.
Raven Biology of plants gives pictures on p446 and 449( in  5th 
edition) and p557  567 in the sixth edition. 
5
Raven and others too gives good definitions: 
Cotyledons are the structures that store food in dicots (like beans ) 
and absorbs food in most monocots.
Just as I stated
6
Joe, if the first leaf is the cotyl can you give me then the name for 
the structure connected with the black seed? 
CONCLUSION: 
The structure in hosta connected with the black seedcoat is the 
cotyledon and the first green leaf is just that, the first green 
leaf! 

Ben J.M.Zonneveld
Clusius lab pobox 9505
2300 RA Leiden
The Netherlands
Zonneveld@RULbim.LeidenUniv.NL
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