Table 2.

Values of the relative rate test for comparing molecular evolutionary rates between parasitic/mycoheterotrophic lineages (Lineage 1) and autotrophic relatives (Lineage 2)

Family	Lineage 1	Lineage 2	K1	K2	K1–K2	K1/K2	P valuea
Apodanthaceae	Pilostyles b	Celastrus	0.055	0.043	0.012	1.3	2.2 × 10 −2
Burmanniaceae	Apteria	B. biflora, B. bicolor	0.006	0.068	−0.062	0.1	3.0 × 10−1
	Burmannia oblonga	B. biflora, B. bicolor	0.059	0.068	−0.009	0.9	4.5 × 10−2
	Burmannia sphagnoides	B. biflora, B. bicolor	0.033	0.053	−0.020	0.6	8.0 × 10−5
	Campylosiphon, Dictyostega	B. biflora, B. bicolor	0.063	0.093	−0.029	0.7	7.7 × 10−5
	Cymbocarpa, Gymnosiphon clade, Hexapterella	B. biflora, B. bicolor	0.044	0.068	−0.024	0.6	1.0 × 10−7
Convolvulaceae	Cuscuta	Convolvulus, Ipomoea	0.077	0.044	0.033	1.8	1.0 × 10 −7
Corsiaceae	Arachnitis	Luzuriaga, Smilax	0.105	0.020	0.084	5.2	1.0 × 10 −7
Cynomoriaceae	Cynomorium b	Hamamelis, Peridiscus	0.053	0.039	0.014	1.4	3.9 × 10 −3
Cytinaceae	Bdallophyton, Cytinus	Muntingia	0.072	0.041	0.031	1.8	1.0 × 10 −7
Ericaceae	Ericaceae clade	Arctostaphylos, Pyrola, Vaccinium	0.054	0.053	0.001	1.0	7.4 × 10−1
Euphorbiaceae	Rafflesia, Rhizanthes	Euphorbia, Ostodes, Ricinus	0.150	0.035	0.115	4.3	1.0 × 10 −7
Gentianaceae	Exacum b	Sebaea grandis	0.064	0.050	0.014	1.3	1.5 × 10 −3
Gentianaceae	Sebaea oligantha	Sebaea grandis	0.051	0.050	0.001	1.0	5.2 × 10−1
Gentianaceae	Voyria clade b	Sebaea grandis, Orphium	0.063	0.052	0.011	1.2	1.4 × 10 −3
Gentianaceae	Voyriella	Sebaea grandis, Orphium	0.049	0.050	−0.001	1.0	8.3 × 10−1
Hydnoraceae	Hydnora, Prosopanche	Aristolochia, Lactoris	0.086	0.039	0.047	2.2	1.0 × 10 −7
Iridaceae	Geosiris	Aristea, Gladiolus	0.034	0.035	−0.001	1.0	7.6 × 10−1
Krameriaceae	Krameria	Guaiacum	0.039	0.039	0.000	1.0	9.9 × 10−1
Lennoaceae	Pholisma b	Hydrophyllum, Phacelia, Ehretia	0.060	0.044	0.016	1.4	7.7 × 10 −4
Mitrastemonaceae	Mitrastemon	Arctostaphylos, Pyrola, Vaccinium	0.086	0.043	0.044	2.0	1.0 × 10 −7
Orchidaceae	Corallorhiza	Aplectrum, Dendrobium	0.048	0.045	0.003	1.1	1.2 × 10−1
Orchidaceae	Erytrorchis	Cyrtosia, Eriaxis, Epistephium	0.060	0.062	−0.002	1.0	6.0 × 10−1
Orchidaceae	Lecanorchis	Vanilla, Eriaxis, Epistephium	0.050	0.054	−0.004	0.9	2.7 × 10−1
Orchidaceae	Neottia	Eburophyton	0.060	0.055	0.006	1.1	1.2 × 10−1
Orchidaceae	Rhizanthella	Diuris, Orchis	0.088	0.050	0.038	1.8	2.0 × 10 −7
Orchidaceae	Wullschlaegelia	Eburophyton, Diuris	0.044	0.054	−0.010	0.1	7.4 × 10−3
Orobanchaceae	Orobanchaceae clade	Paulownia, Lamium, Callicarpa	0.044	0.425	0.002	0.1	5.6 × 10−1
Petrosaviaceae	Petrosavia	Japonolirion	0.035	0.031	0.004	1.1	2.5 × 10−1
Santalales	Santalales clade	Gunnera, Peridiscus, Plumbago	0.051	0.039	0.012	1.3	6.1 × 10 −6
Thismiaceae	Afrothismia clade	Dioscorea, Stenomeris, Tacca	0.113	0.041	0.072	2.8	1.0 × 10 −7
Thismiaceae	Haplothismia, Thismia clade	Dioscorea, Stenomeris, Tacca	0.082	0.042	0.040	1.9	1.0 × 10 −7
Triuridacaee	Kupea, Sciaphila clade	Pandanus, Stemona	0.056	0.037	0.019	1.5	5.7 × 10 −6

P values of lineages with significant increased substitution rates are indicated in bold

K1 mean divergence between lineage 1 and the most recent common ancestor of lineages 1 and 2; K2 mean divergence between lineage 2 and the most recent common ancestor of lineages 1 and 2; K1/K2 rate ratio

^aSignificance of the P values <0.05

^bLineages with significant increased substitution rates which are not observed in the Bayesian relative rates test