Phylogenetic interrelationships of the orders of flowering plants (AGP, 1998)

"Monocots and eudicots are not formally ranked and named because it is not yet clear at which level they should be recognized.  The same problems occur with commelinoids (a phylogenetically derived subgroup of monocots) and with rosids and asterids (subgroups of eudicots), although these are commonly known as subclasses Commelinidae, Rosidae, and Asteridae, respectively."

from Figure 1. Phylogenetic interrelationships of the orders of flowering plants, compiled from recent cladistic analyses cited in the text. Jackknife support is given on the branches (a dash for values <50%), first jackknife values from analysis of 545 sequences of the rbcL, atpB, and 18S rDNA genes (D. E. Soltis, M. W. Chase, P. S. Soltis, D. Albach, M. E. Mort, V. Savolainen, M. Zanis, and J. S. Farris, unpublished, in preparation) and second jackknife values from analysis of 2538 rbcL sequences (Källersjö et al., 1998). 
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