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. 2018 Sep 4;18:179. doi: 10.1186/s12870-018-1398-y

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© The Author(s). 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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 Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — Scanning electron micrographs showing the glandular epidermis of the cuniculus in selected Epidendrum species. a–g Ordinary nectary epidermis. a E. armeniacum. b E. cristatum. c E. densiflorum. d E. orchidiflorum. e E. nocturnum. f E. vesicatum. g E. viviparum. h–p Short trichomes. h E. calanthum. i E. campestre. j E. ciliare. k E. coronatum. l E. ibaguense. m E. incisum. n E. purpureum. o E. radicans. p E. robustum. q–v Medium trichomes. q E. cochlidium. r E. denticulatum. s E. flammeus. t E. puniceoluteum. u E. secundum. v E. xantinum. w–z Long trichomes. w E. anceps. x E. cinabarinum. y E. fulgens. z E. rigidum. Scale bars = 10 μm (a–l, n–q, t-w, y) and 100 μm (m, r, s, x, z)