Pennales
plural noun
Pen·na·les
pəˈnā(ˌ)lēz
: an order of diatoms having a raphe or pseudoraphe and ornamentation of the valves always bilaterally arranged in relation to a line rather than to a point compare centrales
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“Pennales.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Pennales. Accessed 22 Nov. 2024.
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