Table 1 Climatic conditions experienced (1955–2014) in Australian biogeographic regions supporting Echium vulgare (Supplementary Fig. S2).

Biogeographic region¹	Code	Number of records²	Elevation (m)³	Latest record²	Mean minimum temperature of the coolest month (°C)⁴	Mean summer rainfall (mm)⁴	Mean winter rainfall (mm)4
TAS and Southeastern NSW and VIC
South East Highlands	SEH	103	400–1396	2015	0.75	68.55	84.22
Tasmanian South East	TSE	16	8–20	2009	2.39	65.58	141.99
New England Tablelands	NET	6	900–1300	2008	0.79	107.84	48.68
Tasmanian Northern Slopes	TNS	5	280	1984	2.29	55.66	77.35
Ben Lomond	BEL	2	10–280	2011	1.81	64.01	119.03
South East Corner	SEC	3	50	1976	2.40	74.33	70.67
NSW South Western Slopes	NSS	1	150	1981	2.46	51.33	56.69
Australian Alps	AUA	1	1480	1988	−1.62	85.34	139.41
Nandewar	NAN	1	580	1954	1.87	88.25	43.79
NSW North Coast	NNC	1	90	1976	4.00	142.07	62.17
Sydney Basin	SYB	1	260	1998	3.83	99.91	60.04
SA and western NSW and VIC
South East Coastal plain	SCP	11	90–230	1976	5.13	49.09	74.15
Naracoorte Coastal Plain	NCP	10	5–60	1979	5.74	24.93	82.26
Riverina	RIV	6	90	1973	3.54	31.73	36.48
Flinders Lofty Block	FLB	5	278	1990	3.94	24.16	31.64
Darling Riverine Plains	DRP	1	200	1976	4.36	56.12	29.18
Southern Volcanic Plain	SVP	1	300	1918	4.42	39.52	66.80

¹Biogeographic regions were defined by Interim Biogeographic Regionalisation for Australia (please see Fig. S2); ²E. vulgare records were obtained from Australia’s Virtual Herbarium (avh.chah.org.au). ³Elevation data were obtained from AVH or estimated from the elevation of the nearest city or town. ⁴Climate data were provided by the Spatial Data Analysis Network of Charles Sturt University (SPAN; https://www.csu.edu.au/research/span/home).

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