Asteraceae | |
Arctium lappa subsp. majus
| Arènes | Bull. Jard. Bot. État Bruxelles 20: 75 | 1950 |
Asteraceae | |
Arctium lappa var. purpurascens
| (Legrand) Fernald & Wiegand | Rhodora 12(135): 45 | 1910 |
Asteraceae | |
Arctium lappa var. tomentosum
| A. Gray | Manual (ed. 6) 295 | 1890 |