Table 2.

Results of the Principal Component Analysis (PCA) of the Stipapurpurea complex, based on seven morphological characters (the highest factor loadings are in bold); one-way ANOVA with F and p values for characters with normal distribution and Kruskal-Wallis test with H and p values for characters with non-normal distribution (the highest F/H values are in bold); the post-hoc tests (Tukey’s HSD for characters with normal distribution and multiple comparison tests for characters with non-normal distribution): + – significant, p < 0.05, ns – not significant (abbreviations: Stipapurpurea – pur, S.tremula – tre, S.arenosa – are). For character abbreviations, see Table 1.

Character	PC1	PC2	PC3	F / H* value	p value	post-hoc test
						pur-tre	pur-are	tre-are
AL	-0.79	0.49	0.18	35.65*	<0.05	+	ns	+
CL	-0.75	0.51	0.28	50.10	<0.05	+	+	+
AwL	-0.73	0.44	-0.44	23.81	<0.05	+	+	+
LCL	-0.69	-0.57	-0.18	29.92	<0.05	+	+	ns
LVL	-0.74	-0.57	0.06	97.55	<0.05	+	+	+
LG	-0.86	0.14	-0.11	44.97*	<0.05	+	ns	+
SHL	-0.78	-0.50	0.17	73.26*	<0.05	+	ns	+
Percent variation (%)	59.17	23.40	5.66
No. of significant differences						7	4	6