Paracaryum shepardii Post & Beauverd, Pl. Post. Dinsm. 1: 8. 1932
Paracaryum shepardii, Pl. Post. Dinsm. 1: 8. 1932
is basionym for Cynoglossum shepardii in Willdenowia 11: 36. 1981
is basionym for Mattiastrum shepardii in Willdenowia 41: 312. 2011