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| Achnantheiopsis joursacensis (Héribaud) Lange-Bertalot 1997 |
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| Achnantheiopsis lanceolata (Brébisson ex Kützing) Lange-Bertalot 1997 |
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| Achnantheiopsis lanceolatoides (Sovereign) Lange-Bertalot 1997 |
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| Achnantheiopsis linkei (Hustedt) Lange-Bertalot 1997 |
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| Achnantheiopsis magnifica (Hustedt) Lange-Bertalot 1997 |
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| Achnantheiopsis marina (Hustedt ex Simonsen) Lange-Bertalot 1997 |
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| Achnantheiopsis minutissima (Krasske) Lange-Bertalot 1997 |
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| Achnantheiopsis miota (Carter & Denny) Lange-Bertalot 1997 |
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| Achnantheiopsis oestrupii (Cleve-Euler) Lange-Bertalot 1997 |
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| Achnantheiopsis peragalli (Brun & Héribaud) Lange-Bertalot 1997 |
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| Achnantheiopsis pericava (Carter) Lange-Bertalot 1997 |
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| Achnantheiopsis pseudotanensis (Cleve-Euler) Lange-Bertalot 1997 |
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| Achnantheiopsis pungens (Cleve-Euler) Lange-Bertalot 1997 |
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| Achnantheiopsis robusta (Hustedt) Lange-Bertalot 1997 |
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| Achnantheiopsis robustior Lange-Bertalot 1997 |
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| Achnantheiopsis rostrata (Østrup) Lange-Bertalot 1997 |
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| Achnantheiopsis salvadoriana (Hustedt) Lange-Bertalot 1997 |
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| Achnantheiopsis septentrionalis (Østrup) Lange-Bertalot 1997 |
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