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171. Matricaria Linnaeus, Sp. Pl. 2: 890. 1753.
母菊属 mu ju shu
Authors: Zhu Shi, Christopher J. Humphries & Michael G. Gilbert
Akylopsis Lehmann; Chamomilla Gray; Lepidanthus Nuttall (1841), not Nees (1830), nor Nuttall (1835); Lepidotheca Nuttall.
Herbs, annual, usually fragrant; indumentum absent or of simple, basifixed hairs. Leaves 1- or 2-pinnatisect. Synflorescences cymose, usually ± flat-topped, sometimes reduced to solitary capitulum. Capitula heterogamous or homogamous, radiate or discoid. Involucres coryliform; phyllaries in 2 or 3 rows. Receptacle conical to subulate, epaleate. Marginal florets when present in 1 row, female, fertile; lamina white. Disk florets yellow or pale green, bisexual; corolla tubular, apex 4- or 5-lobed. Anther bases obtuse; apical appendage triangular. Style branches linear, apex truncate. Achenes small, terete, slightly dorsiventrally compressed, adaxially with 3-5 thin ribs. Corona small or absent or sometimes represented by an adaxial auricle particularly in ray achenes.
About seven species: N Africa, SW and temperate Asia, Europe, North America; two species in China.
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Capitula heterogamous, with both marginal ray florets and central disk florets; ray florets white, disk florets yellow; achenes with 5 thin adaxial ribs; corona absent. |
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1 M. chamomilla |
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Capitula homogamous, florets all bisexual, tubular, pale yellow-green; achenes with 2 or 3 thin adaxial ribs; corona present, white. |
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2 M. discoidea |
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Lower Taxa
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