Australian Tropical Ferns and Lycophytes - Online edition
4.5.4 Pinna or pinnule margin
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![](../../images/features/4_5.4_pinna_or_pinnule_margin/thumbs/char_4_5_4_crenate_sml.jpg)
Crenate: with rounded teeth or small lobes.
![](../../images/features/4_5.4_pinna_or_pinnule_margin/thumbs/char_4_5_4_entire_sml.jpg)
Entire: margin smooth and without teeth or lobes.
![](../../images/features/4_5.4_pinna_or_pinnule_margin/thumbs/char_4_5_4_lobed_sml.jpg)
Lobed: the pinna or pinnule is divided but divisions extend no more than half way from the lobe apex to the axis that the lobe is attached to.
![](../../images/features/4_5.4_pinna_or_pinnule_margin/thumbs/char_4_5_4_toothed_sml.jpg)
Toothed: with sharp teeth.
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