Inula squarrosa

Inula squarrosa may refer to four different species of plants:
 * Inula squarrosa Krock., a synonym for Pentanema britannica (L.) D.Gut.Larr. et al.
 * Inula squarrosa Griseb., a synonym for Pentanema salicinum (L.) D.Gut.Larr. et al.
 * Inula squarrosa L., a synonym for Pentanema spiraeifolium (L.) D.Gut.Larr. et al.
 * Inula squarrosa Bernh. ex DC., a synonym for Pentanema squarrosum (L.) D.Gut.Larr. et al.