ˌbä.trēˌäpˌterəˈdāsēˌē noun plural
Usage: capitalized
Etymology: New Latin, from Botryopterid-, Botryopteris, type genus (from botry- + -pterid-, -pteris ) + -aceae
: a family of three or four genera of primitive ferns found in Devonian and Carboniferous rocks of Europe and having the stem strand of xylem surrounded by phloem and the petioles with characteristic single W-shaped vascular bundle