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172. Glebionis Cassini in F. Cuvier, Dict. Sci. Nat. 41: 41. 1826.
茼蒿属 tong hao shu
Authors: Zhu Shi, Christopher J. Humphries & Michael G. Gilbert
Ismelia Cassini; Xantophtalmum Schultz Bipontinus.
Herbs, annual; indumentum absent or of simple, basifixed hairs. Leaves alternate, pinnatifid or margin dentate. Synflorescences cymose, lax ± flat-topped or reduced to solitary terminal capitulum. Capitula pedunculate, heterogamous, radiate. Involucre cup-shaped; phyllaries in 4 rows, rigidly herbaceous. Receptacle convex, epaleate. Marginal florets in 1 row, female, fertile; lamina yellow or yellow and white. Disk florets yellow, bisexual; corolla tubular, apex 5-lobed. Anther bases obtuse; apical appendage ovate-elliptic. Style branches linear, apex truncate. Ray achenes 3-angled, laterally winged, adaxially narrowly winged or ribbed; corona absent. Disk achenes prismatic with a narrow adaxial wing or terete; corona absent.
Three species: Mediterranean region, introduced elsewhere as weeds or cultivated as an ornamental or as vegetables; three species (all introduced) in China.
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| 1 |
Ray achenes narrowly 2-winged; leaves irregularly dentate or rarely pinnatilobed. |
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3 G. segetum |
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Ray achenes widely 3-winged; leaves bipinnately divided |
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(2) |
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| 2 (1) |
Adaxial wings of ray achenes projected into an apical rostrum. |
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1 G. carinata |
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Wings of ray achenes not projected into rostrum. |
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2 G. coronaria |
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Lower Taxa
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