Reconstruction of the phylogenetic relationships of Scleroglossum species occurring in China including all accessions available in GenBank (October 2018). Newly generated accessions are printed in bold: HaiAcc = Hainan Accessions, two sequences obtained from individual A and B; YunAcc = Yunnan Accessions; VieAcc1 and VieAcc2 = two accessions obtained from the herbaria collections at KUN representing two independent collections (see Suppl. material 1: Table S1). The areas of origin are given for Scleroglossum GenBank accessions. The presented consensus phylogram is based on a Bayesian inference of Phylogeny including 690 accessions represented by rbcL sequences. Clades composed by non-Scleroglossum accessions were pruned. Two stars mark clades with a posterior confidence of p = 1.00 whereas one star marks clade with a posterior confidence p ≥ 0.95 and < 1.00. p.p. = pro parts to indicate the polyphyly of S. sulcatum.