Table 2.

The top ten divergences making the largest contribution to present-day LMA variation (ranked 1–10). For these divergences, the rank of the contribution to 2C DNA variation explained by these nodes (2C DNA rank) was also determined. The contribution index for both LMA and 2C DNA is listed (for details on calculations see Materials and Methods). The sign of the contrast is set so that genome size is always positive and contrasts in LMA are then compared in the same direction across the node. Thus, a positive contrast refers to the larger genome species having higher LMA, and a negative contrast refers to the larger genome species having lower LMA.

Rank	LMA contribution	Divergences making the largest contribution	2C DNA rank	2C DNA contribution	Sign of contrast
1	0·574	Angiosperms vs. gymnosperms	1	0·465	+
2	0·041	Polytomy at the base of the core eudicots	11	0·006	+
3	0·037	Polytomy at the base of Poales	3	0·067	–
4	0·032	Proteales vs. core eudicots	41	0·001	–
5	0·029	Polytomy across monocots, magnoliids and eudicots	2	0·074	–
6	0·014	Prosopis glandulosa vs. the rest of Fabaceae	54	<0·001	+
7	0·012	Poales vs. the rest of the commelinids	25	0·002	–
8	0·011	Larix spp. and Pseudotsuga menziesii vs. the rest of Pinaceae	52	<0·001	+
9	0·011	Divergence at the base of eurosid 2	12	0·006	+
10	0·010	Polytomy at the base of the rosids	81	<0·001	+