× Trichocidium

{{Short description|Genus of flowering plants}}

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× Trichocidium, abbreviated as Trcdm. in the horticultural trade,{{cite web |url=http://londonorchidsociety.com/MiscFiles/Abbrev.pdf |title=Genera, Abbreviation, Name, and Type |date=July 15, 2022 |website=London Orchid society |page=18 |format=PDF |access-date=October 8, 2023 |url-status=live |archive-url=https://web.archive.org/web/20231008173710/http://londonorchidsociety.com/MiscFiles/Abbrev.pdf |archive-date=October 8, 2023}} is the orchid nothogenus comprising intergeneric hybrids of the two orchid genera Oncidium and Trichocentrum (Onc. x Trctm.).