Arachnothryx rzedowskii (Lorence) Borhidi Arachnothryx rzedowskii (Lorence) Borhidi in Acta Bot. Hung. 38 (1–4): 140. 1995 sec. Borhidi 2006≡Rondeletia rzedowskii Lorence in Novon 1: 154. 1991 syn. sec. The Plant List 2013