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FOC | Family List | FOC Vol. 20-21 | Asteraceae

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.

1 Ray achenes narrowly 2-winged; leaves irregularly dentate or rarely pinnatilobed.   3 G. segetum
+ Ray achenes widely 3-winged; leaves bipinnately divided   (2)
2 (1) Adaxial wings of ray achenes projected into an apical rostrum.   1 G. carinata
+ Wings of ray achenes not projected into rostrum.   2 G. coronaria

Lower Taxa


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