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7. Achillea Linnaeus, Sp. Pl. 896. 1753; Gen. Pl. ed.. 5. 362. 1754; DC., Prodr. 6: 24. 1837; Hub.-Mor. in P.H.Davis, Fl. Turk. 5: 224. 1975; I.Richardson in Tutin et al., Fl. Europ. 4: 159. 1976; Hub.-Mor. in Rech. f., Fl. Iran. Comp. IV. 158: 49. 1986; K.Bremer & Humphries in Bull. Nat. Hist. Mus. Lond. (Bot.) 23(2): 128.1993; K.Bremer, Asteraceae: 462. 1994; Grierson & Springate in Grierson, D.G.Long & Springate, Fl. Bhutan 2(3): 1566. 2001.
Ptarmica DC., Prodr. 6: 29. 1837; Arthrolepis Boiss., Diagn. Pl. Or. Nov. Ser. 1, 11: 14. 1849.
Perennial, often pilose herbs, usually with thick woody rootstock. Leaves alternate, undivided-serrulate or 3-4-pinnatipartite or pinnatisect. Capitula small to mediocre, heterogamous, radiate or not, long-peduncled to sometimes sessile, borne in terminal corymbs or solitary at the apices. Involucre oblong-cylindrical to depressed subglobose or hemispherical, phyllaries without or with narrow to broadly hyaline margins. Receptacle ± flat or convex, with lanceolate or oblong, scarious paleae. Ray-florets female, with 3-dentate, white or yellow ligules. Disc-florets bisexual, with ± compressed, regularly 5-dentate corolla tube. Cypselas oblong to obovoid, compressed, glabrous, wingless, bald, apically enveloped by pouched bases of corolla tube.
A genus of 115 species, distributed in Eurasia and Mediterranean region. Represented by 5 species in Pakistan.
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| 1 |
Ligules white or pale-white. |
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(4) |
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Ligules bright yellow to golden yellow. |
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(2) |
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| 2 (1) |
Leaves with ultimate segments orbicular to broadly cuneate, denticulate on margins, imbricate. Plants not more than 35 cm tall. |
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1 Achillea wilhelmsii |
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Leaves with ultimate segments linear to setaceous and acute or oblong-lanceolate and ± obtuse. Plants usually more than 50 cm tall. |
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(3) |
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| 3 (2) |
Leaves usually densely pilose, with linear, cute-acuminate ultimate segments. Rachis up to 1 mm wide. |
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2 Achillea biebersteinii |
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Leaves usually densely appressed hairy, with oblong-lanceolate, subacute ultimate segments. Rachis more than 1.5 mm wide. |
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3 Achillea filipendulina |
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| 4 (1) |
Leaf rachis 1.5-2 mm wide. Ultimate leaf segments narrowly linear-oblong to lanceolate, mucronate. Ligules 1.5-2 mm long, white. |
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4 Achillea millefolium |
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Leaf rachis less than 1 mm wide. Ultimate leaf segments setaceous, acuminate. Ligules less than 1.5 mm long, pale-white. |
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5 Achillea setacea |
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Lower Taxa
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