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34. Carduus Linnaeus, Sp. Pl. 2: 820. 1753.
飞廉属 fei lian shu
Authors: Zhu Shi & Werner Greuter
Herbs, biennial or perennial. Stems with spiny wings. Leaves subentire or pinnately divided, spiny. Capitula solitary to clustered. Involucre cylindric to depressed-globose. Phyllaries imbricate. Florets bisexual. Corolla purple to red or rarely white. Stamen filaments densely pubescent; anther with short, basal appendages entire to somewhat lacerate. Style branches short. Achene narrowly obovoid, laterally compressed, often with 10-15 slender longitudinal striae but otherwise smooth; elaiosome crowned by an inconspicuous disk. Pappus 4 or 5 rows of scabrid bristles, outer ones shorter than inner.
About 95 species: tropical Africa, Asia, Europe; three species in China.
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| 1 |
Capitula solitary, ± nodding; involucre 4-7 cm in diam.; outer and middle phyllaries 4-5 mm wide, distal portion narrowed at base. |
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1 C. nutans |
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Capitula clustered by 3-5 or sometimes solitary, erect; involucre 1.5-2(-2.5) cm in diam.; phyllaries to 2 mm wide, distal portion not narrowed at base |
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(2) |
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| 2 (1) |
Plants dark green; leaves abaxially sometimes gray and thinly cobwebby; leaf and wing spines weak, to 3 mm. |
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2 C. crispus |
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Plants light green or bluish green; leaves concolorous and hardly cobwebby; major leaf and wing spines pungent, 3-6 mm. |
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3 C. acanthoides |
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Lower Taxa
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