Colletotrichum caudatum s.l. is a species complex

Table 2 Summary of characteristics of the four marker datasets used to conduct molecular phylogenetic analyses. All analyses were run from datasets consisting of the living cultures of Colletotrichum strains, as listed in Table 1.

General dataset parameters	*Apn2*	ITS	*Matl*	*Sod2*	All data
DNA characters	798	401	1297	519	3015
Coded gap characters	2	7	61	13	84
Total aligned characters	800	408	1358	532	3098
Constant characters	494	276	533	306	1609
Parsimony informative characters	275	54	691	189	1209
PHI tests for recombination ¹
All C. caudatum s.l. isolates	YES	NO	YES	YES
	p = 0.0086	p = 0.2487	p = 0	p = 0
C. caudatum s.l. isolates, excluding incongruent taxa²	YES p = 0.0055	NO p = 1.0	NO p = 1.0	NO p = 1.0
Delta score ³	0.164	0.067	0.188	0.256
Q-residual score ³	0.022	0.005	0.08	0.122

¹Pairwise homoplasy index (PHI) test performed using a dataset composed of Colletotrichum in the Caudatum subaggregate: C. alcornii, C. baltimorense, C. caudatum, C. somersetense, C. zoysiae, and isolates CBS112172 and MAFF 305700.
²Incongruent taxa = CBS113172 and NY07-CC04.
³Where delta score and Q-residual score=0 when distances between taxa exactly fit a tree. Scores ranging from 0 (tree-like) to 1 (non-treelike).