Found 1 items, similar to Stigmaria.
English → English (gcide) Definition: Stigmaria Stigmaria \Stig*ma"ri*a\, n. [NL. See Stigma.] (Paleon.) The fossil root stem of a coal plant of the genus Sigillaria. [1913 Webster] Underclay \Un"der*clay`\, n. (Geol.) A stratum of clay lying beneath a coal bed, often containing the roots of coal plants, especially the Stigmaria. [1913 Webster]