| Name | Rhigospira quadrangularis (Müller Arg.) Miers |
| Authorship | (Müller Arg.) Miers |
| Rank | Species |
| Placed in | Rhigospira |
| Citation | 1878 Apocyn. S. Am. 68 |
| Holdings | 15 Specimens held in the Harvard University Herbaria identified as Rhigospira quadrangularis (Müller Arg.) Miers |
| Identification made in | [no date] (9), 1981 (5), 1989 (1) |
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