Polycarpon diphyllum, Taxa Only, Exact Match: 4 Treatments

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Polycarpon tetraphyllum subsp. diphyllum     Al, Gianniantonio Domina Et, 2025, Refining the inventory of the vascular flora of Italy: Unconfirmed, doubtful, excluded or extinct taxa, Phytotaxa 723 (1), pp. 1-137 : 84-85 84-85
Polycarpon diphyllum     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1964, Flora Europaea - Volume 1. Lycopodiaceae to Platanaceae, Cambridge University Press : 153 153
Polycarpon tetraphyllum subsp. diphyllum     S. Castroviejo, M. Lainz, G. Lopez Gonzalez, P. Montserrat, F. Munoz Garmendia, J. Paiva & L. Villar, 1990, Flora Iberica / Vol. II: Platanaceae - Plumbaginaceae (partim), Madrid: Real Jardín Botanico, CSIC : 163 163
Polycarpon tetraphyllum subsp. diphyllum     Raab-Straube, Eckhard von & Raus, Thomas, 2022, Euro + Med-Checklist Notulae, 15, Willdenowia 52 (2), pp. 273-299 : 278 278