| Name | Alstonia sp. |
| Authorship | |
| Rank | Species |
| Placed in | Alstonia R. Brown |
| Holdings | 14 Specimens held in the Harvard University Herbaria identified as Alstonia sp. |
| Identification made in | [no date] (10), 1993 (1), 1999 (1), 2005 (2) |
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