Having notably more length than width; being long and slender
Native or limited to a specific geographic area
Algae which grows within the subsurface of sediments, clays, and silt
An organism that lives inside another, benefitting both individuals, is considered to be an endosymbiont.
Algae which grows on the surface of rock or stone
Algae which grows on the surface of sediments, clays, and silt (i.e., residing at the water/sediment interface).
Algae which grows on the surface of plants or other Algae
Attached to (or moving through) sand particles
The larger valve of a frustule, in comparison to the hypotheca