Interfascicle

An unornamented, thicked rib of silica located between fascicles. Usually applied to centric diatoms.

Alternative Terms

costa
Yellowstonensis 4A Copy
Image Credit: S. Spaulding
The interfascicles are thickened bands of silica. Here, an interfascicle of Stephanodiscus yellowstonensis is marked with a thin, red line.