Fossil Alloceltidoxylon, Allonymphaea, Arecocaryon, Paralnoxylon and Paranyssa and extant Komaroviopsis, Marcanodendron, and Papyrocactus (Magnoliophyta), new replacement generic names Author Doweld, Alexander B. text Phytotaxa 2021 2021-11-03 524 2 92 98 journal article 3631 10.11646/phytotaxa.524.2.3 95502ed7-70ba-4246-bc62-ec628ba12f4e 1179-3163 5642032 Alloceltidoxylon Doweld , nom. nov. ≡ Scottoxylon Wheeler & Manchester , I.A.W.A. J. Supplement 3: 130. 2002, nom. illeg . non Scotoxylon Vogellehner in Palaeontographica, Abt. B, Paläophytol. 124: 150. 1968. IFPNI registration LSID: 950D6BCC-7D18-C1B1-DEE8-6178D78A785F Type— Alloceltidoxylon eocenicum (Wheeler & Manchester ) Doweld, comb. nov. ≡ Scottoxylon eocenicum Wheeler & Manchester , I.A.W.A. J. (Supplement 3): 130. 2002. Holotype — U.S.A. : Clarno Nut Beds, Wheeler Co. , Oregon ( USNM 507952 , National Museum of Natural History, Smithsonian Institution, Washington, USA) – figured: fig. 42. IFPNI registration LSID: F414FE14-C9BE-E0E1-8DBA-91C932B0BD4A . Stratigraphy: Eocene (Ypresian: Clarno Formation). Etymology: by superficial likeness to the woods of extant Celtis Linnaeus (1753: 1043) . The fossil-genus Scottoxylon Wheeler & Manchester was described on the basis of fossil woods from the Middle Eocene (Ypresian) sediments of Clarno Nut Beds, Oregon , USA (Clarno Formation). However, the fossil-generic name is a later illegitimate (para)homonym of fossil wood genus Scotoxylon Vegellehner (1967) of protopinoid plants of the Upper Jurassic age from Helmsdale, Sutherland, Scotland , U.K. Thus, a new replacement name for the fossil wood generic name putatively related to the extant genus Celtis L. is necessary and validated.