Abstract
Nicola Terracciano described Xiphion collinum (Iridaceae) in 1872, based on specimens collected in Campania region, southwestern Italy. The taxon has been treated as a synonym of Iris graminea, of I. lorea, or of I. sintenisii. Critical evaluation of original material and literature confirms that X. collinum and I. lorea are the same taxon, here regarded as a synonym of I. sintenisii. This species can be chiefly distinguished from I. graminea by its rosette leaves firmer and narrower, stem terete, outer bract not longer than the inner one, claw of the outer perianth segments without distinct wings, and fruits with a slender beak and ribs in close pairs. Besides, a lectotype is designated for the name Xiphion collinum and the correct combination in Chamaeiris is provided.
References
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De Castro, O., Del Guacchio, E., Di Iorio, E., Di Maio, A., Di Martino, L. & Bartolucci, F. (2020) Barcoding helps threatened species: the case of Iris marsica (Iridaceae) from the protected areas of the Abruzzo (Central Italy). Plant biosystems 154: 961–972. https://doi.org/10.1080/11263504.2020.1762786
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Del Guacchio, E. & La Valva, V. (2017) The non-native vascular flora of Campania (southern Italy). Plant biosystems 152 (“2018”): 767–779. https://doi.org/10.1080/11263504.2017.1338626
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Futorna, O.A., Zhygalova, S.L. & ?adanina, V.A. (2018) The seed’s ultrastructure of genus Iris L. s.l. (Iridaceae) species from Ukrainian Carpathians. Ukrainian journal of ecology 8: 5–10. https://doi.org/10.15421/2017_181
Gavioli, O. (1947) Synopsis florae Lucanae. Giornale botanico Italiano 54: 10–272. https://doi.org/10.1080/11263504709440996
Groves, E. (1887) Flora della costa meridionale della Terra d’Otranto. Giornale botanico Italiano 19: 110–219. https://doi.org/10.5962/bhl.title.9880
Güner, A. (2022) Iris L. In: Güner, A., Kandemir, A., Menemen, Y., Y?ld?r?m, H., Aslan, S., Çimen, A.Ö., Güner, I., Ek?i Bona, G. & ?en Gökmen, F. (Eds.) Resimli Türkiye floras? (Illustrated flora of Turkey) 3a. ANG Vakf? Nezahat Gökyi?it Botanik Bahçesi Yay?nlar?, Istanbul, pp. 701–823.
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