| 41. | The calli along the centre of the labellum, decreasing in size towards the front.
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| 42. | The labellum with three inconspicuous lobes.
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| 43. | The labellum is three-lobed.
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| 44. | The labellum is simple and folded down, the same color as the other perianth segments.
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| 45. | The labellum bends backwards and is split into two lobes for more than half its length.
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| 46. | The labellum is split into two lobes at the end for about half of its length.
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| 47. | The labellum is usually simple, but is occasionally bifurcated at the tip of the midrib.
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| 48. | The lip ( labellum ) has a complex three-dimensional shape and is strongly patterned.
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| 49. | The labellum is deeply lobed and has three white lines at the base of each lobe.
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| 50. | The labellum is blunt, sharply kinked in the middle and is long and about wide.
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