Appendix S1. Statistical parameters for quantitative characters of examined subspecies of Senecio erucifolius.
S. erucifolius subsp. erucifolius
S. erucifolius subsp. tenuifolius
Mean
Mean
Min.
Max.
Variation
Min.
Max.
[%]
Variation
[%]
Length of stem
0.98
0.70
1.29
15.69
0.93
0.69
1.56
16.47
Height of stem at the lowest branch of inflorescence
0.59
0.07
1.07
33.64
0.54
0.07
1.07
31.59
Number of branch of inflorescence
6.63
2.00
15.00
45.35
8.62
2.00
15.00
32.69
Number of capitula
59.63
13.00
138.00
51.76
81.37
13.00
138.00
35.63
Diameter of base of capitulum
4.17
3.00
5.00
9.51
4.28
4.00
5.00
10.51
Diameter of capitulum
18.79
16.00
21.00
6.54
18.48
16.00
21.00
8.02
Number of involucral bracts per capitulum
12.93
12.00
13.00
1.94
13.44
12.00
14.00
3.93
Length of involucral bracts
3.90
3.00
4.00
6.84
3.99
3.00
5.00
9.46
Number of supplementary bracts per capitulum
4.56
4.00
6.00
18.39
5.83
4.00
8.00
24.78
Length of supplementary bracts of capitulum
2.19
2.00
3.50
16.52
2.86
2.00
4.00
24.10
Length of ligulate flower
11.39
9.00
13.00
11.84
9.98
9.00
12.00
8.72
Width of ligulate flower
1.99
1.50
2.00
3.94
1.86
1.00
2.00
18.95
Length of tubular flower
7.31
6.00
8.00
10.16
5.00
4.00
6.00
9.60
Length of achene
1.58
1.33
2.22
9.37
1.78
1.44
2.33
10.50
Width of achene
0.57
0.44
0.67
9.73
0.53
0.44
0.67
9.19
Ratio between length and width of achene
2.79
2.00
5.00
13.77
3.41
2.33
5.00
15.35
Length of pappus hairs of tubular flower
4.56
3.33
5.67
13.62
4.83
3.56
6.89
15.11
Ratio between length of pappus hairs of the tubular flower and length of achene
2.89
1.83
3.77
12.36
2.86
1.65
4.29
16.03
Length of middle leaf
8.24
5.10
13.90
24.25
7.10
4.20
13.40
24.77
Width of middle leaf
5.03
2.90
8.30
20.85
5.07
2.10
8.60
29.50
Distance from the leaf base to its widest part
3.78
1.20
8.40
44.36
3.38
0.80
9.10
37.84
Ratio between the distance from the leaf base to its widest part and length of leaf
0.45
0.17
0.72
30.92
0.47
0.16
0.93
25.94
Length of upper lobe
3.60
1.90
6.10
24.70
1.54
0.80
4.90
30.00
Width of upper lobe
2.92
1.00
5.40
26.70
0.19
0.10
1.90
66.52
Length of longest lateral lobe
3.14
1.50
5.40
27.91
3.11
0.20
5.00
25.02
Width of longest lateral lobe
0.45
0.40
0.70
15.94
0.20
0.10
0.60
35.32
Width of upper lobe at the base
0.64
0.40
1.20
32.79
0.14
0.10
0.60
52.67