Understanding the variations among sepals and petals described with the use of elliptic Fourier analysis and the variations in the lip or labellum described with the use of landmark method will advance our understanding variability in the shapes of this highly color variable orchid group.
The 3 sepals, 2 petals and the labellum were separated and were arranged accordingly between the two (2) clear glasses.
The lip or labellum of the flower was also used to describe variations among the different varieties of Mokara using the landmark-based method using 15 landmarks.
We chose a subset of three characters (opening date, flower height, and labellum length) to be included in the multivariate analyses, for the following reasons: stalk length was highly correlated with flower height; thus, only the latter was included because we would expect pollinators to select for the height of the inflorescence rather than the length of the stalk.
Mean values for opening date, flower height, and labellum length were compared among microhabitats using a Tukey multiple-comparison test (SYSTAT 1992.
Variables included in the model were microhabitat, flower opening date, flower height, and labellum length (SYSTAT 1992).
andrewsiae, from which it can be distinguished by the larger flowers (> 25 mm diameter with a labellum 11-12 mm long vs.
tapiae, whose labellum is conspicuously longer than wide.
Of particular importance is to have good information on flower color, especially of the labellum.
This is a tri-coloured species with sepals and petals being reddish-brown, and the labellum being orange with purple overlay in the centre.
The flowers are mainly deep purple in colour, with the apex of the labellum being yellowish-green.
This species too has a bi-coloured flower, with the sepals and petals being almost translucent green to cream, and a purple labellum.