Pentanema squarrosum

Pentanema squarrosum
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Pentanema
Species:
P. squarrosum
Binomial name
Pentanema squarrosum
(L.) D.Gut.Larr., Santos-Vicente, Anderb., E.Rico & M.M.Mart.Ort.
Synonyms
List
    • Aster conyzae Griess.
    • Conyza squarrosa L.
    • Conyza vulgaris Lam.
    • Helenium vulgare Kuntze
    • Inula conyza DC.
    • Inula conyzae (Griess.) Meikle
    • Inula foetida Dulac
    • Inula squarrosa Bernh. ex DC.
    • Inula vulgaris Trevis.
    • Jacobaea canzya (DC.) Merino
    • Inula suaveolens Jacq.
    • Pentanema conyzae (Griess.) D.Gut.Larr., Santos-Vicente, Anderb., E.Rico & M.M.Mart.Ort.

Pentanema squarrosum (syn. Inula conyzae), ploughman's-spikenard, is a species of plant in the Asteraceae found in Europe, North Africa, and the Near East. It is an aromatic herb that grows in calcareous grassland and was in the past sometimes harvested as a substitute for true spikenard, or nard, Nardostachys jatamansi.