| Name | Usnea florida var. perplexans (Stirton) Vainio |
| Authorship | (Stirton) Vainio |
| Rank | Variety |
| Placed in | Usnea florida (Linnaeus) Weber ex F. H. Wiggers |
| Citation | 1890 use: Acta Soc. Fauna Fl. Fenn. vol. 7 (1-22 Nov 1890) 1: 5 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Usnea florida var. perplexans (Stirton) Vainio |
| Identification made in | [no date] (1) |
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