Table 2. AU test and the minimum steps of 110 characters required by 15 published topologies.

Tree	Topology	−lnL	Diff –lnL	AU	Steps
Our tree	(((((Cerato,Chlor),Eud),Magnol),Mono),Out)	−801884.5732	(best)	0.965	777
2	(((Cerato,Chlor),((Mono,Magnol),Eud)),Out)	−801932.3642	51	0.203	775
3	(((Cerato,Chlor),((Mono,Eud),Magnol)),Out)	−801963.9212	83.1	0.036	775
4	(((((Cerato,Mono),Eud),Magnol),Chlor),Out)	−802010.0536	139.1	0.023	783
5	((((Cerato,Chlor),(Eud,Magnol)),Mono),Out)	−801945.2438	67.5	0.019	777
6	((((Cerato,Chlor),Magnol),(Mono,Eud)),Out)	−801982.6426	109.5	0.018	776
7	(((Cerato,Eud),((Chlor,Mono),Magnol)),Out)	−802062.7199	208.2	0.009	784
8	(((((Cerato,Chlor),Magnol),Mono),Eud),Out)	−801979.7486	105.9	0.008	776
9	(((((Cerato,Eud),Mono),Chlor),Magnol),Out)	−802061.6555	206.1	0.003	787
10	((((Cerato,Eud),Mono),(Chlor,Magnol)),Out)	−802038.5455	186.7	0.002	785
11	(((((Cerato,Eud),Magnol),Chlor),Mono),Out)	−802019.2713	158.1	0.001	787
12	(((Cerato,Mono),(Chlor,(Eud,Magnol))),Out)	−801995.197	139.3	5.00E−04	783
13	(((((Cerato,Eud),Magnol),Mono),Chlor),Out)	−802045.461	166.5	3.00E−04	784
14	((((Cerato,Mono),Chlor),(Eud,Magnol)),Out)	−802023.879	168.7	1.00E−06	782
15	(((Cerato,(Mono,Eud)),(Chlor,Magnol)),Out)	−802060.8392	210.8	3.00E−47	782

AU, approximately unbiased test; Cerato, Ceratophyllaceae; Chlor, Chloranthaceae; Eud, eudicots; Magnol, magnoliids; Mono, monocots.

P-values>0.05 are in bold.