Australian Tropical Rainforest Plants - Online edition
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![](../../images/features/fl_filament_length_relative_to_anther/char_fl129.jpg)
FL129 very short or absent less than 0.25 length of anther
![](../../images/features/fl_filament_length_relative_to_anther/char_fl130.jpg)
FL130 short 0.25 to 2.0 times length of anther
![](../../images/features/fl_filament_length_relative_to_anther/char_fl131.jpg)
FL131 long more than 2.0 times length of anther
This is the length of the filament relative to the anther at anthesis; if the filaments are partly fused, then the free part is used.
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