Fig. 1

Vanda Mimi Palmer. A Flower. Scale bar = 6 mm; B Each floral part is designated as s1 = dorsal sepal, s2 = lateral sepal 1, s3 = lateral sepal 2, p1 = petal 1, p2 = petal 2. The labellum (L) is not included in the analysis; C For simplicity in presentation, each floral part is sectioned into 10 segments (a–j). Each segment was independently viewed under the Environmental Scanning Electron Microscope. Any trichome sitting on the border of the segments is not included in the count. The asterisk indicates the orientation of the segment (a) in the whole flower