Comparative floral traits in Corunastylis (Diurideae; Orchidaceae) with novel applications: do some species bleed or blink?

We compared suites of inflorescence and floral traits of six taxa in the genus Corunastylis. Liquid rewards were not detected at the bases of labellum calluses in three species. Instead, glabrous auricle lobes containing variable numbers of raphides secreted droplets. Scent analyses identified seven compounds in three species, with five for C.ruppii, sharing 8-heptadecece with C. filiformis. A previous hypothesis that these flowers mimic wounded insects offering "mock haemolymph" overlaps with the suggestion here that scents and trembling labella mimic blinking, weeping eyes.