<i>Hyalosira</i> (Diatomeae: Grammatophoraceae) from Florida Keys, U.S.A., Including Two New Species with Consistent Ornamentation
Diatoms are the most numerous of algae and scanning electron microscopy continues to reveal ever-increasing diversity. Two new species of <i>Hyalosira</i> from Florida add new characters distinguishing species in this recently redefined genus: <i>H. ornata</i> sp. nov. from F...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-06-01
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| Series: | Diversity |
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| Online Access: | https://www.mdpi.com/1424-2818/17/7/448 |
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| Summary: | Diatoms are the most numerous of algae and scanning electron microscopy continues to reveal ever-increasing diversity. Two new species of <i>Hyalosira</i> from Florida add new characters distinguishing species in this recently redefined genus: <i>H. ornata</i> sp. nov. from Florida Bay has consistent and elaborate ornamentation on both valves and undulate valve margins; <i>H. sertifera</i> sp. nov., from the Atlantic coast of Key Largo, has a thick, consistent, garland-like ring of cristae on only one valve; the former species has deep septa on all copulae except the valvocopula, the latter shallow septa or none on the copulae. <i>Hyalosira hesperia</i> was also found in the Atlantic sample; this is the first record outside the Mediterranean. The number of species known from SEM is now twelve, including four with septa, a diversity potentially useful in exploring outstanding questions of septum function; a key to these species is appended. |
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| ISSN: | 1424-2818 |