In France filoselle silk is known as bourre de soie. Filoselle silk, while lacking the gloss of floss silk, superseded floss silk for general embroidery, as it was less expensive and easier to keep smooth.
Source: CAULFEILD, Sophia F. A. and Blanche C. SAWARD (1882). The Dictionary of Needlework, London: Upcott Gill, p. 206.
GVE