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Achnanthes longipes is a species of diatoms in the family Achnanthaceae. They are native to Pernambuco, Santa Catarina, Rio Grande Do Sul, SãO Paulo, and Paraná. Dead Achnanthes longipes form siliceous oozes.

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  • URI: http://purl.obolibrary.org/obo/ENVO_02000044
  • Definition: Siliceous ooze is a marine sediment composed of the debris of plankton with silica shells, such as diatoms and radiolaria. This ooze is limited to areas with high biological productivity, such as the polar oceans, and upwelling zones near the equator. The least common type of sediment, it covers only 15% of the ocean floor. It accumulates at a slower rate than calcareous ooze: 0.2-1 cm / 1000 yr.
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EOL has data for 29 attributes, including:

Known occurrences, collected specimens and observations of Achnanthes longipes C. Agardh 1824. View this species on GBIF