The Jepson Manual: Higher Plants of California
THIS PAGE IS NO LONGER UPDATED
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
Up-to-date information about California vascular plants is available from the
Jepson eFlora
.
Names are linked to treatments from the Manual
Key to TANACETUM
N.B.: couplets are linked, e.g., 1. is linked to 1'.
1.
Stems decumbent, not ribbed
T. camphoratum
1'
Stems erect, ribbed
2.
Heads generally < 20, radiate; ligules short, white; 1° leaflets generally < 5, ovate, with irregular rounded divisions
T. parthenium
2'
Heads generally > 20, disciform; 1° leaflets generally > 5, lanceolate, sharply toothed
T. vulgare
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