| Name | Calamus distichus f. shangsiensis S. J. Pei & S. Y. Chen |
| Authorship | S. J. Pei & S. Y. Chen |
| Rank | Forma |
| Placed in | Calamus distichus Ridl. |
| Citation | 1989 Acta Phytotax. Sin. 27(2): 140 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Calamus distichus f. shangsiensis S. J. Pei & S. Y. Chen |
| Identification made in | [no date] (1) |
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