Synonyms
Galium claytonii var. subbiflorum (Wiegand) Wiegand
Galium trifidum var. subbiflorum Wiegand
Galium claytonii subsp. subbiflorum (Wiegand) Piper & Beattie
Galium trifidum var. pusillum A.Gray
Galium subbiflorum (Wiegand) Rydb.
Galium tinctorium var. subbiflorum (Wiegand) Fernald