Electronic Supplementary Material 1. List of the endemic taxa of Greece for which there is some indication of trade via the internet, number of nurseries involved in their current, past or unconfirmed trade,and type of information on cultivation provided, whenever applicable. For the assessed taxa, given are also the IUCN extinction risk categories, whereas for the very narrowly distributed taxa, given is the number of localities(1-5), where they were detected. IUCN extinctionrisk categories at national level are after Phitos et al. (1995, 2009). For taxa not included in these two sources, IUCNcategories refer to the global scale according to Walter & Gillett (1998); these appear in italics. Marked with ‘*’ are plants protected at the national level after the Greek Presidential Decree 67/1981, with ‘c’ are taxa covered by the CITES Convention, with ‘**’ are the taxa included in Annex II of the EU Dir 92/43/EEC, and with ‘#’ are the taxa covered by the Bern Convention. For cultivation information, GGC stands for information on germination, SS for seed storage, SG for seed germination instructions, andGfor growth instructions.

Family and taxon / IUCN extinctionrisk category / Number of involved nurseries / Steno-endemics
(No. of known localities) / Type of information on cultivation
Unconfirmed trade / Past trade1 (year, in parenthesis) / Active
trade / Total
Amaryllidaceae
Allium callimischonLinkssp. callimischon / 1 / 1 / 2
A. circinnatumSieber ssp. circinnatum* / Rare / 1 / 1
A. heldreichiiBoiss.* / Rare / 1 / 2 / 3 / SG
A. luteolumHalácsy* / Rare / 1 / 1
A. meteoricumHeldr. & Hausskn. / 1 / 1 / GGC
A. tardansGreuterZahar. / 1 / 1
GalanthusikariaeBaker*,c / Rare / 3 / 1 (2008) / 4 / 7 / 4
Araceae
Arum idaeumCoustur. & Gand. / 1 (2008)
A. purpureospathumP. C. Boyce# / Vulnerable / 6 / 3 / 9 / SG, G
BiarumdavisiiTurrillssp. davisii* / Rare / 1 (1998) / 1 / 1
B. tenuifolium(L.) Schott ssp. abbreviatum (Schott) K. Richter / Rare / 2 / 1 / 3
Asparagaceae
BellevaliabrevipedicellataTurrill* / Endangered / 1 / 2 / 3 / 4
B. hyacinthoides(Bertol.) K. Perss. & Wendelbo / 1 / 1
B. spicata(Raf.) Boiss. / 1 / 1
Muscarispreitzenhoferi(Heldr. ex Osterm.) H. R. Wehrh. / 2 / 1 (2005) / 2
ScillamesseniacaBoiss.* / Rare / 2 / 2
S. nana(Schult. & Schult. f.) Speta* / 1 / 1
Boraginaceae
AnchusacespitosaLam.* / Rare / 5 / 1 / 6 / 4
Lithodorazahnii(Halácsy) I. M. Johnst.* / Vulnerable / 7 / 4 / 11 / 2
Brassicaceae
Alyssoidescretica(L.) Medik. / 1 (2006)
AubrietaglabrescensGriseb. / Rare / 2 / 2 / 1
A. gracilisBoiss. / 1 / 1 / 2
Bornmuelleratymphaea(Hausskn.) Hausskn. / 2 / 1 (1998) / 2
DrabacreticaBoiss. & Heldr. / 1 / 2 / 3 / GGC, SG
D. parnassicaBoiss. & Heldr. / 2 / 3 / 5 / GGC, SG
ErysimummutabileBoiss. & Heldr. / 8 / 1 / 9
E. pusillumBoryChaub. / 1 / 1
Thlaspi bulbosumSpruner* / Rare / 1 (2004) / 2 / 2
T. zaffranii(F. K. Meyer) GreuterBurdet / Vulnerable / 1 / 1 / 1
Campanulaceae
Campanula aizoidesGreuter* / Vulnerable / 1 (1997) / 4
C. andrewsiiA.DC. ssp. andrewsii / 1 (1997)
C. calaminthifolia Lam. / 1 (2009) / 1
C. cretica(A.DC.) D. Dietr.* / Rare / 1 / 2 / 3 / GGC, SG
C. garganicaTen. ssp. cephallenica (Feer) Hayek / Vulnerable / 3 / 1 / 4
C. heterophyllaL.* / Rare / 1 (1997)
C. hierapetrae Rech. f.* / Vulnerable / 1 / 1 / 1
C. incurvaA.DC.* / Rare / 7 / 6 / 13 / GGC
C. laciniata L.* / Rare / 1 (1998)
C. oreadumBoiss. & Heldr.* / 1 / 1 (2009) / 1 / 1
C. pelviformisLam.* / 1 / 1 / 2
C. reiseriHalácsy* / 1 (2008)
C. rupestrisSm.* / Vulnerable / 2 / 2 / 1
C. rupicolaBoiss. & Spruner* / Rare / 1 / 1
C. sartoriiBoiss. & Heldr.* / Rare / 1 (2009) / 4
C. saxatilisL.ssp. saxatilis* / Vulnerable / 1 (1999)
C. thessalaMaire / 1 (2004
C. topalianaBeauverdssp. cordifoliaPhitos / 1 (1997)
Edraianthusparnassicus(Boiss. & Spruner) Halácsy / 1 / 1 / 2 / SG
Petromarula pinnata(L.) A. DC. / 1 / 1 (2002) / 3 / 4
Caryophyllaceae
Cerastium candidissimumCorrens / 2 / 4 / 6 / SG
C. theophrastiMerxm. & Strid / Vulnerable / 1 (1998) / 1
Dianthus haematocalyxBoiss. & Heldr. ssp. ventricosus Maire & Petitm. / 1 / 1 / GGC
Gypsophila nanaBoryChaub. / Rare / 1 / 1 (2002) / 1
Silene auriculataSm. / 1 / 1
Clusiaceae
Hypericum amblycalyxCoustur. & Gand.* / Rare / 1 / 1
H. athoumBoiss. & Orph.* / Rare / 3 / 1 / 4
H. empetrifoliumWilld. ssp. oliganthum (Rech. f.) I. Hagemann / 1 / 1 (2001) / 1
H. empetrifoliumWilld. ssp. tortuosum (Rech. f.) I. Hagemann / 1 / 1
H. kelleriBald.* / Near threatened / 1 / 1 / 5
H. trichocaulonBoiss. & Heldr. / 2 / 1 / 3 / SG
Colchicaceae
Colchicum asteranthumVassiliades & K. Perss. / Vulnerable / 2 / 2 / 1
C. chimonanthumK. Perss. / Vulnerable / 1 / 1 / 4
C. graecumK. Perss. / 2 / 1 / 3
C. parlatorisOrph. / 2 / 2
C. parnassicumSart.,Orph. & Heldr. / Near threatened / 4 / 3 / 7 / 4 / SG, G
C. sfikasianumKit Tan & Iatrou / 2 / 2
Compositae
Achillea pindicolaHausskn. ssp. integrifolia(Halácsy) Franzén / 1 / 1
A. taygeteaBoiss. & Heldr.* / Rare / 16 / 8 / 24
A. umbellataSm. / 4 / 2 / 6
CentaureaatropurpureaOlivier / 20 / 5 / 25 / SG
Crepis incanaSm. / 13 / 5 / 18 / SG
HelichrysumdoerfleriRech. f.* / Endangered / 1 (2006) / 2
H. sibthorpiiRouy*,# / Endangered / 1 (2010) / 1
Inulacandida(L.) Cass. / 1 (2006)
OnopordummesseniacumHalácsy* / Rare / 1 / 1
Crassulaceae
Sedum apoleipon't Hart / 1 / 1 / 2
Dipsacaceae
Lomelosiahymettia(Boiss. & Spruner) GreuterBurdet / 1 / 1
Euphorbiaceae
Euphorbia deflexaSibth. & Sm. / 4 / 2 / 6
Fabaceae
EbenuscreticaL. / 1 (2008)
LathyrusneurolobusBoiss. & Heldr.* / Vulnerable / 2 / 1 / 3 / 4
Geraniaceae
ErodiumchrysanthumL'Hér.*,# / Vulnerable / 37 / 12 / 49
Globulariaceae
Globularia stygiaBoiss.* / Vulnerable / 2 / 2 / 4 / 3
Iridaceae
Crocus biflorusMill. ssp. melantherusB. Mathew / 2 / 2 / 4 / SS, SG, G
C. biflorusMill. ssp. stridii(Papan. & Zacharof) B. Mathew / Vulnerable / 1 / 1 / 2 / 2
C. boryi J, Gay / 3 / 2 / 5 / SG
C. cartwrightianusHerb. / 6 / 4 / 10
C. goulimyiTurrill* / Vulnerable / 8 / 5 / 13 / 5 / SS, SG, G
C. laevigatusBoryChaub. / 3 / 5 / 8
C. niveus Bowles / 8 / 5 / 13 / SG
C. oreocreticusB. L. Burtt* / Rare / 1 / 1
C. robertianusC. D. Brickell*,# / Near threatened / 1 / 1 / 2
C. sieberiJ. Gay ssp. atticus (Boiss. & Orph.) B. Mathew / 2 / 2
C. tournefortiiJ. Gay / 3 / 3 / 6 / SG
Iris unguicularisPoir. ssp. cretensis (Janka) A. P. Davis & Jury / 8 / 1 / 9
Lamiaceae
MarrubiumvelutinumSm. / 1 (2001)
Nepetacamphorata Boiss.* / Rare / 1 / 1
N. melissifoliaLam. / 3 / 2 / 5
Origanum calcaratumJuss. / Vulnerable / 5 / 1 / 6 / GGC
O. dictamnusL.*,**,# / Vulnerable / 17 / 7 / 24
O. microphyllum(Benth.) Vogel / 4 / 4
O. scabrumBoiss. & Heldr.*,# / Vulnerable / 1 (2009)
Phlomislanata Willd.* / 14 / 3 / 17
Salvia pomiferaL. ssp. pomifera / 2 / 2 / GGC
SideritissyriacaL. ssp.syriaca / 1 (2001) / 1 / 1
StachyscandidaBory &Chaub.* / Rare / 1 / 1 (2007) / 1 / 2
S. chrysanthaBoiss. & Heldr.* / Rare / 1 / 1 (2007) / 1 / 2
TeucriumaroaniumOrph. ex Boiss.* / Near threatened / 8 / 6 / 14
T. halacsyanumHeldr.* / Rare / 1 (1998)
Liliaceae
FritillariaconicaBoiss.*,# / Endangered / 2 / 3 / 5 / GGC, SG, G
F. davisiiTurrill* / Rare / 11 / 4 / 15 / GGC, SG, G
F. ehrhartiiBoiss. & Orph. / 1 (2009) / 1 / 1 / GGC, SG, G
F. euboeicaRix*,# / Vulnerable / 1 (2009)
F. graeca Boiss. & Sprunerssp. graeca# / 1 / 3 / 4 / GGC, SG, G
F. obliquaKer Gawl. ssp. tuntasia (Heldr. ex Halácsy) Kamari*,# / Vulnerable / 1 / 1 / 5
F. pelinaeaKamari / Endangered / 1 (2009) / 1
F. rhodiaA. Hansen / Rare / 1 (2009)
F. rhodocanakisOrph. ex Baker*,# / Vulnerable / 4 / 2 / 6 / GGC, SG, G
F. spetsioticaKamari / Vulnerable / 1 (2009)
F. theophrastiKamariPhitos / Endangered / 1 (2010) / 3
TulipacreticaBoiss. & Heldr.* / 5 / 3 / 8
Linaceae
LinumpunctatumC. Presl ssp. pycnophyllum (Boiss. & Heldr.) Gustavsson / 1 / 1 / 2
Orchidaceae
OphryskotschyiH. Fleischm. & Soó ssp. cretica (Soó) H. Sund.*,#,c / 1 / 1
Paeoniaceae
PaeoniaclusiiStern ssp. rhodia (Stearn) Tzanoud.*,**,# / Vulnerable / 1 (2002) / 4
P. mascula(L.) Mill. ssp. hellenicaTzanoud. / Rare / 1 (2008)
P. mascula(L.) Mill. ssp. icaricaTzanoud. / 1 (2002)
P. parnassicaTzanoud.**,# / Vulnerable / 1 (2002) / 4
Papaveraceae
Corydalis blandaSchott ssp. oxelmanniiLidén / 1 (2001) / 1
C. blandaSchott ssp. parnassica (Orph. & Heldr.) Lidén / 1 (2004)
C. uniflora(Sieber) Nyman / Rare / 1 (2001)
Pinaceae
Abies cephalonicaJ. W. Loudon / 9 / 6 / 15 / SG
Primulaceae
Cyclamen creticumHildebr.*,c / 3 / 5 / 8 / G
C. rhodiumO. Schwarz & Lepperc / 4 / 2 / 6
Lysimachia serpyllifoliaSchreb. / 1 (2009)
Ranunculaceae
Anemone hortensisL. ssp. heldreichii (Boiss.) Rech. f. / 1 (2009)
Rosaceae
Alchemillaaroanica(Buser) Rothm. / Vulnerable / 1 / 1 / 2 / 1
Rubiaceae
Asperula arcadiensisSims / 3 / 3
A. boissieriBoiss. / 1 / 1 / 2
A. taygeteaBoiss. & Heldr.* / Rare / 1 (2001)
Scrophulariaceae
Verbascumacaule(BoryChaub.) Kuntze* / Rare / 1 / 1
V. arcturusL. / 1 (2010) / 2 / 2 / SG, G
V. epixanthinumBoiss. & Heldr. / 2 / 2 / 4 / SG, G
V. spinosumL. / 1 (2005)
Ulmaceae
Zelkovaabelicea(Lam.) Boiss.*,**,# / Vulnerable / 1 (1998)
Violaceae
Viola athoisW. Becker*,# / Near threatened / 1 (2002) / 1
V. vourinensisErben / 1 (2002)

1For nurseries grouped under past trade, given in parenthesis is the last listing year, according to the Plant Finder of the Royal Horticultural Society’s website.