Learn how to say Lepidodendron correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word stigmaria:
noun (plural stigmariae /-ˈmɛːrɪiː/)
a fossilized root of a giant lycopod, common in Carboniferous coal measures.
Class Lycopsida, in particular the genera Lepidodendron and Sigillaria
mid 19th century: modern Latin, from Greek stigma, with reference to the scars where rootlets were attached, covering the fossils