Cereoid+10 schreef
Did you read the warning to the website?
http://www.mobot.org/MOBOT/Research/APweb/

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Yes, we all read this. We knew it already
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Most of what is posted on the Internet is second hand info taken from old
papers.

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Most is not original, but not all.
Papers are not necessarily old either!
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Of course all if this remains meaningless and mystical if you have no idea
what the plants in the various orders actually look like.

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Up to a point it may be helpful to know what the plants look like.
Not sure it really is necessary
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1. The primitive trimerous dicots.
(maybe call them "Predicots" or "Protodicots"?)

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They are not all trimerous, note the most primitive group called the (as
Stewart Robert Hinsley pointed out) ANITA-group, eg Nymphaeaceae.
They are dicots, and can be called "primitive Angiosperms", etc
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3. True (4-5 merous) Dicots. (so called "Eudicots")

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The Core Eudicots are 4-5 merous
The Basal Eudicots are a bit of a mess in this respect (see the start of
this thread)
PvR