Key to the genera of the Anthemideae

1.

Marginal florets rayed, well-exceeding involucre

2

 

Marginal florets filiform or absent, scarcely exceeding involucre

3

2. (1)

Receptacle paleaceous

Anthemis

 

Receptacle epaleaceous

Tanacetum

3. (1)

Disc floret corollas 5-merous; capitula numerous, usually nodding

Artemisia

 

Disc floret corollas 3- or 4- merous; capitula solitary, erect

4

4. (3)

Capitula sessile

Soliva

 

Capitula scapiform and long-pedicelled

Cotula