| SN2000 author citation | : | |
O. Posthumus, 1924 ex M. Hirmer, 1927 |
| Unavailable original name, rank & spelling | : | |
Posthumus, O. 1924. Proc. Kon. Ned. Akad. Wetensch. 27 (9-10): 836. [nom. nud.].
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| Original name, rank & spelling | : | |
Hirmer, M. 1927. Handb. Paläobot. 1: 487. ≡
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| Description/Diagnosis in German | : | |
loc. cit.
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