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. 2019 Jul 31;6:140. doi: 10.1038/s41597-019-0141-3

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — The Brazilian campos rupestres are rocky seasonally-dry environments with some of the world’s most phosphorus (P)-impoverished soils. (a) The study was conducted in a campo rupestre site in the Brazilian state of Minas Gerais, as shown on the map (left). Campo rupestre areas are shown in dark gray. The sites where plants of each Velloziaceae species were collected are indicated in the aerial image of the study area (right). (b) Barbacenia macrantha was found in a rocky area (left), where it grows over exposed rocks (right). (c) Vellozia epidendroides specimens were collected in an area (left) where they grow in patches of shallow soil (left).