De Boer et al. DNA metabarcoding of orchid-derived products reveals widespread illegal orchid trade. Proceedings of the Royal Society B. DOI: 10.1098/rspb.2017-1182. Electronic Supplementary Material (ESM) Table S2 J. de BoerHugo GhorbaniAbdolbaset ManzanillaVincent RaclariuAncuta-Cristina KreziouAnna OunjaiSarawut OsathanunkulMaslin GravendeelBarbara 2017 Data for products that yielded less than 0.5 ng/µl of DNA. Reads per species for nrITS1, nrITS2 and merged per sample.