Pterocaulon pycnostachyum (Michx.) Elliott [ Conyza spicata Lam.]
      
no HD illustration available (m3)
5 851779 Pterocaulon pycnostachyum (Michx.) Elliott [116 271904 Conyza pycnostachya Michx.] Compositae
A.J. Cavanilles, Icon. (Cavanilles), vol. 1 : t. 12 (1791) [A.J. Cavanilles]