Supplemental Material
Table S1. List of all endemic plant species sampled in this study including the number of records in all, in the natural and in the roadside plots as well as the minimum and maximum elevation of each species found in this study.
Endemic species / Total # of records / # of records in natural plots / # of records in roadside plots / Min. elevation [m] / Max. elevation [m]Adenocarpus foliolosus / 10 / 6 / 4 / 1078 / 2009
Adenocarpus viscosus subsp. spartioides / 47 / 23 / 24 / 1080 / 2416
Aeonium arboreum / 11 / 5 / 6 / 262 / 845
Aeonium canariense / 4 / 2 / 2 / 188 / 1040
Aeonium davidbramwellii / 16 / 6 / 10 / 173 / 1349
Aeonium diplocyclum / 5 / 1 / 4 / 845 / 2009
Aeonium spathulatum / 7 / 2 / 5 / 1245 / 2053
Aichryson bollei / 2 / 1 / 1 / 1361 / 1746
Aichryson laxum / 3 / 2 / 1 / 1078 / 1517
Aichryson punctatum / 2 / 1 / 1 / 1361 / 1746
Argyranthemum haouarytheum / 8 / 4 / 4 / 227 / 2405
Argyranthemum webbii / 1 / 1 / 0 / 1236 / 1236
Artemisia thuscula / 3 / 0 / 3 / 173 / 444
Bencomia exstipulata / 1 / 0 / 1 / 2127 / 2127
Bystropogon canariensis / 4 / 3 / 1 / 1047 / 1225
Bystropogon origanifolius / 9 / 4 / 5 / 1339 / 2023
Carlina falcata / 8 / 3 / 5 / 467 / 1493
Chamaecytisus proliferus subsp. proliferus / 23 / 7 / 16 / 444 / 1971
Cistus symphytifolius / 7 / 5 / 2 / 1336 / 1941
Descurainia gilva / 16 / 6 / 10 / 1695 / 2416
Descurainia millefolia / 3 / 2 / 1 / 1746 / 2023
Echium brevirame / 5 / 2 / 3 / 97 / 295
Echium gentianoides / 4 / 2 / 2 / 2004 / 2127
Echium webbii / 2 / 2 / 0 / 821 / 1225
Echium wildpretii subsp. trichosiphon / 4 / 3 / 1 / 1776 / 2127
Erysimum scoparium / 8 / 3 / 5 / 2023 / 2416
Euphorbia canariensis / 1 / 1 / 0 / 188 / 188
Euphorbia lamarckii / 11 / 6 / 5 / 173 / 821
Genista benehoavensis / 7 / 2 / 5 / 2053 / 2349
Gonospermum canariense / 2 / 1 / 1 / 821 / 1207
Habenaria tridactylites / 4 / 2 / 2 / 1136 / 1708
Juniperus cedrus / 1 / 1 / 0 / 2076 / 2076
Kleinia neriifolia / 21 / 10 / 11 / 173 / 821
Lactuca palmensis / 4 / 2 / 2 / 1915 / 2076
Lavandula canariensis / 1 / 0 / 1 / 135 / 135
Lotus campylocladus subsp. hillebrandii / 6 / 1 / 5 / 1349 / 1746
Micromeria herpyllomorpha / 5 / 2 / 3 / 227 / 2416
Micromeria lasiophylla subsp. palmensis / 3 / 3 / 0 / 2009 / 2405
Pericallis papyracea / 40 / 17 / 23 / 175 / 1538
Phoenix canariensis / 4 / 1 / 3 / 173 / 366
Phyllis nobla / 4 / 2 / 2 / 467 / 867
Pinus canariensis / 71 / 35 / 36 / 235 / 2077
Plantago webbii / 4 / 2 / 2 / 2127 / 2324
Pterocephalus porphyranthus / 3 / 0 / 3 / 1941 / 2175
Retama rhodorhizoides / 1 / 0 / 1 / 581 / 581
Rumex lunaria / 15 / 5 / 10 / 173 / 821
Salix canariensis / 4 / 1 / 3 / 867 / 1245
Scrophularia glabrata / 2 / 1 / 1 / 2023 / 2053
Silene pogonocalyx / 3 / 1 / 2 / 1695 / 2405
Sonchus hierrensis / 28 / 10 / 18 / 173 / 2004
Sonchus palmensis / 15 / 5 / 10 / 262 / 1493
Spartocytisus supranubius / 2 / 1 / 1 / 2053 / 2076
Teline splendens / 3 / 2 / 1 / 467 / 740
Teline stenopetala / 12 / 5 / 7 / 644 / 1245
Tinguarra cervariaefolia / 4 / 1 / 3 / 1339 / 1746
Tolpis laciniata / 2 / 0 / 2 / 845 / 1090
Viburnum rigidum / 3 / 1 / 2 / 644 / 740
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