On the External Morphology of the Stems of Calamites, with a Revision of the British Species of Calamophloios and Dictyocalamites of Upper Carboniferous Age

E. A. Newell Arbert, F. W. Lawfield
1920 Journal of the Linnean Society of London Botany  
doi:10.1111/j.1095-8339.1920.tb00712.x fatcat:dobhvycswjd4jgi7qqcel6shry