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| Inflorescence a head with 5 ray florets and 12+ disc florets. | Habit - semi-woody sub-shrub. Has upright, unbranched stems. |
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| Phyllaries are in one series, fused and have very prominent glands. Notice the recurved style branches of the disc florets. | The leaves are minutely toothed and have many glands. The oil is fragrant, and the leaves can be used in salads or as a substitute for tarragon. |
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| The leaf margins are ciliate towards the bases. | |