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Dinghushan | Family List | Compositae

Inula Linn.

旋覆花属

Description from Flora of China

Corvisartia Mérat.

Perennials or annuals. Stems not winged, sometimes with decurrent leaves, with or more frequently without resin canals. Leaves basal and cauline, alternate, simple, usually sessile, sometimes in a basal rosette, margins usually serrate to dentate, sometimes entire. Capitula heterogamous radiate to miniradiate, heterogamous disciform, or homogamous discoid, borne singly or in open, corymbiform arrays. Involucres hemispheric or campanulate, [5-]10-40 mm in diam.; phyllaries persistent, in 4-7+ series. Receptacles flat or convex, smooth or alveolate, epaleate. Ray florets (15-)50-150+, female, fertile; corolla yellow to orange, lamina 10-30+ mm. Disk florets bisexual, mostly (50-)100-250+; corolla yellow, lobes 5; epidermis with straight cell walls, without needlelike crystals. Anthers ecalcarate, with branched tails; endothecial tissue radial; cells of antheropodium generally longer than wide. Pollen spines with a cavity. Style branches with acute sweeping hairs, not reaching furcation. Achenes ellipsoid or cylindric, ribbed; epidermis with elongated crystals. Pappus persistent, of basally connate, barbellate bristles or setiform scales usually in 1 series. x = 8, 9, 10.

Inula taiwanensis S. S. Ying (Mem. Coll. Agric. Natl. Taiwan Univ. 29(1): 78. 1989) could not be treated here because no material was seen by the present authors.

About 100 species: Africa, Asia, Europe; 14 species (two endemic) in China.

Lower Taxon


 

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