Cordaites UNG.

nomenclatorial act: 
protologue/first publication
Page: 
277
diagnosis: 

Trunci erecti simplices columnares, cortice extus annulata, annulis spiraliter dispositis e basi foliorum formatis, intus medullosa et fasciculis vasorum folia spectantibus percursa. Cylindrus lignosus centralis simplex cavus vasis scalariformibus radiatum dispositis, medulla ampla farctus, Radii medullares nulli. Folia simplicia sessilia spiraliter disposita subamplexicaulia, parallelinervia in comam terminalem congesta. Fructificatia ignota. Habitus Aletridis Dracenae, sed structura fere Lomatophloyi.

systematic position: 
Regio II. Cormophyta, Sectio III. Acrobrya, Classis X. Selagines, Ordo XXIX Lycopodiaceae
typeseries: 
Cordaites borassifolia (Sternberg) Unger [by monotypy]
Classification: 

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Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith