Book on systematic relations wanted!

[RoundUp]

Could someone point out some referenses to books or articles that contain 
cladistic and/or phenetic relations between different species of plants 
and algea?
I am not a botanist or knowledgable in systematics but am as a biochemist 
working in a project were we use plants and algea for studies of 
differences in some markers. It would be helpful to have some reference 
literature to turn to. It would be nice to see some examples of multiple 
carracteristic trees, DNA sequence differences, enzymes, serological and 
others.
Please send replies to my E/mail adress.
_________________________________________________________
Lars Snogerup               Lars.S at Plantbio.lu.se
Plant Biochemistry
Lund University
Sweden