花黄色，但常有一系列明暗深浅的变化。花瓣上富于变化的棕红色线条，有时在蜜腺上部有一圈棕红色的斑点。
It has yellow flowers in various shades of yellow, with varying degrees of penciling or red-brown lines and sometimes with a red-brown circular blotch above the gland.
它们的蜜腺结构和传粉者行为之间没有明显的相关性，但是胶质或水质的花蜜对传粉者的取食方式有一定影响。
There were no strong correlations between nectary structures and pollinator behavior, although gelatinous or watery nectar was associated with the foraging preference of pollinators.
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