Australian Tropical Ferns and Lycophytes - Online edition
4.5.8 Pinna or pinnule base auricle/basiscopic
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![](../../images/features/4_5.8_pinna_or_pinnule_base_auriclebasiscopic/thumbs/char_4_5_8_basioscopic_sml.jpg)
Auricle basiscopic: enlarged lobe at base of lamina on side of the leaflet further from leaf apex.
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