Fig. 2
From: Chromosome number and ploidy level of balm (Melissa officinalis)

leaf colour and density of pubescence in balm (Melissa officinalis); a: diploid, b: triploid and c: tetraploid. The size bars equals 1 cm
From: Chromosome number and ploidy level of balm (Melissa officinalis)
leaf colour and density of pubescence in balm (Melissa officinalis); a: diploid, b: triploid and c: tetraploid. The size bars equals 1 cm