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. 2017 Dec 22;5(12):apps.1700079. doi: 10.3732/apps.1700079

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© 2017 Kuzmina et al. Published by the Botanical Society of America

This is an open access article distributed under the terms of the Creative Commons Attribution License (CC-BY-NC-SA 4.0), which permits unrestricted noncommercial use and redistribution provided that the original author and source are credited and the new work is distributed under the same license as the original.

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Fig. 2. — Comparison of sequence recovery for three DNA barcodes among 25 species-rich families using a beta regression model and reference families (Fabaceae for rbcL and matK, Brassicaceae for ITS2). Test 1: Herbarium specimens in seven different age classes (decade 1: 1–10 yr; decade 2: 11–20 yr; decade 3: 21–30 yr; decade 4: 31–40 yr; decade 5: 41–50 yr; decade 6: 51–60 yr; decade 7 and older: 61 yr and older). Test 2: Silica gel–preserved material vs. herbarium specimens from decade 1. NA = not applicable.