Australian Tropical Ferns and Lycophytes
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Australian Tropical Ferns and Lycophytes - Online edition
4.5.3 Pinna or pinnule shape
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This includes oblanceolate or spathulate (widest above the middle and tapering to the base) and oblong, lanceolate or elliptic (widest point at or below middle and tapering toward the apex).
Long and narrow, at least 10 times longer than wide.
Round, fan-shaped or not as above.
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