Fig. 7

Comparison of data spread of morphological characters amongst Blepharis populations sampled at Kufranjah valley (northern population, 1), Dead Sea region (northern population, 2), and Wadi al Yutm (southern population, 3). Graphed variables include a internode length (cm), b bract length (cm), c bract width (cm), d longest lateral spine (cm), e spine length to bract width ratio, f veins per bract (#), and g spines per bract margin. Different letters indicate a statistically significant difference at P ≤ 0.05 using linear modeling (lm). Each box represents 50% of the data and upper and lower box lines represent 75th and 25th percentiles, respectively, of the data set. The line in the middle of the box is the median value of the data, the whiskers indicate the adjusted values