Table 1.

Sources of the occurrence records, giving the name of the dataset (Source name; ined. if unpublished), the Type of data (records with geographic coordinates (records), records at the grid level (gridded records), or atlas-type (atlas) data), and the Countries/Islands covered by the source.

Ref	Source name	Type of data	Countries	Nb taxa	Nb rec	Nb cells	% taxa	% rec	% cells
1	Distribution atlas of vascular plants in Albania	atlas	Albania	103	5032	291	50.74	0.4	2.9
2	Flora Croatica Database	records	Croatia	117	41154	294	57.64	3.3	2.93
3	ined.	records	Cyprus	6	677	27	2.96	0.05	0.27
4	EUFGIS Genetic Conservation Units	records	Europe	23	195	148	11.33	0.02	1.47
5	GBIF	records	Cyprus	22	95	33	10.84	0.01	0.33
6	Conservatoire botanique national alpin (CBNA)	records	France	94	57369	163	46.31	4.59	1.62
7	Conservatoire botanique national de Corse (CBNC)	records	France, Corsica	80	24462	120	39.41	1.96	1.19
8	Conservatoire botanique national du Massif Central (CBNMC)	records	France	87	39612	53	42.86	3.17	0.53
9	IGN Inventaire Forestier	records	France, Corsica	102	68327	749	50.25	5.47	7.46
10	Conservatoire botanique national méditerranéen de Porquerolles (CBNMed)	records	France	111	345623	638	54.68	27.68	6.35
11	Flora Hellenica Database	atlas	Greece, Crete	139	34900	1618	68.47	2.79	16.11
12	GBIF	records	Portugal, Spain, Balearic Islands	106	554515	4993	52.22	44.41	49.72
13	Tentamen Florae Aeolicae	records	Eolian islands	46	246	21	22.66	0.02	0.21
14	CNR data	records	Italy	5	203	182	2.46	0.02	1.81
15	EU-Forest	atlas	Italy	79	12333	1362	38.92	0.99	13.56
16	INFC 2015	records	Italy	71	12332	1369	34.98	0.99	13.63
17	VegItaly	records	Italy	93	27421	681	45.81	2.2	6.78
18	WikiPlantBase # Liguria, # Toscana, # Sardegna, # Sicily	records	Italy	120	13303	506	59.11	1.07	5.04
19	ined.	gridded records	Macedonia	99	3461	88	48.77	0.28	0.88
20	ined.	gridded records	Malta	39	156	7	19.21	0.01	0.07
21	ined.	gridded records	Montenegro	69	731	25	33.99	0.06	0.25
22	ined.	gridded records	Sicily	95	4203	345	46.8	0.34	3.44
23	Atlas of Flora of Slovenia	atlas	Slovenia	87	2351	33	42.86	0.19	0.33

We indicated for each source the number of taxa (Nb taxa), the number of records (Nb rec), and the number of 10 × 10 km grid cells covered by the source (Nb cells), as well as its contribution to the total WOODIV database (percentage of the taxa (% taxa), of the records (% rec) and of the grid cells (% cells)). Origin and citation of the sources are indicated in Supplementary Table 1 (Ref = reference number to Supplementary Table 1).