Table 1. Average pairwise sequence distances between Holcoglossum s.s. and related genera.

Average genetic distance	ITS	matK	trnL-F
Holcoglossum s.s.	0.010	0.012	0.014
Penkimia nagalandensis vs. Holcoglossum s.s.	0.010	0.013	0.027
Ascocentrum himalaicum vs. Holcoglossum s.s.	0.011	0.019	0.018
Ascolabium pumilum vs. Holcoglossum s.s.	0.011	0.018	0.013
Holcoglossum s.s. vs. Aerides	0.052	0.016	0.028
Holcoglossum s.s. vs. Ascocentrum	0.035	0.014	0.031
Holcoglossum s.s. vs. Papilionanthe	0.020	0.038	0.010
Holcoglossum s.s. vs. Vanda	0.035	0.010	0.041
Ascocentrum himalaicum vs. Aerides	0.045	0.023	0.027
Ascocentrum himalaicum vs. other Ascocentrumspecies	0.032	0.022	0.031
Ascocentrum himalaicum vs. Papilionanthe	0.015	0.045	0.009
Ascocentrum himalaicum vs. Vanda	0.032	0.018	0.040
Penkimia nagalandensis vs. Aerides	0.045	0.017	0.032
Penkimia nagalandensis vs. Ascocentrum	0.029	0.016	0.022
Penkimia nagalandensis vs. Papilionanthe	0.015	0.038	0.017
Penkimia nagalandensis vs. Vanda	0.029	0.018	0.031
Ascolabium pumilum vs. Aerides	0.054	0.022	0.036
Ascolabium pumilum vs. Ascocentrum	0.033	0.020	0.040
Ascolabium pumilum vs. Papilionanthe	0.020	0.049	0.017
Ascolabium pumilum vs. Vanda	0.038	0.016	0.050