L., Sp. Pl. 896 (1753).
Derivation: After Achilles, who is said to have used this herb to staunch the wounds of Telephus.
Synonymy: Not Applicable
Common name: None
Perennial herbs with rhizomes; leaves basal and cauline, alternate, numerous, pinnatifid to bipinnatisect.
Capitula numerous in terminal corymbs, pedicellate, radiate, heterogamous; involucres campanulate; bracts herbaceous with scarious margins, imbricate in about 3 unequal series; receptacle convex with oblong membranous scales; ray florets uniseriate, female, with short ovate to orbicular ligules; ray achenes more or less flattened, smooth; pappus absent; disk florets tubular, 5-merous, bisexual, fertile; corollas funnel-shaped; anthers shortly tailed at the base with ovate apical appendages; style branches broadly linear, truncate, with papillose apices.
Disk achenes similar to ray achenes.
About 85 species in Europe and Asia.
Key to Species:
Not yet available