noun Ly·gi·nop·te·ris \ˌlījəˈnäptərə̇s\

Definition of Lyginopteris

  1. :  a genus of Carboniferous seed ferns having a stem with mesarch siphonostele, large accumulation of pith, and marked development of secondary wood

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Origin and Etymology of lyginopteris

New Latin, from Greek lyginos of withe (from lygos withe + -inos -ine) + New Latin -pteris

Seen and Heard

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a rounded knoll or a ridge of ice

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