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Chinese Plant Names | Family List | Asteraceae | Senecio

Senecio oryzetorum Diels


Description from Flora of China

Herbs, annual. Stems erect, 20-30 cm tall, branching from base or in upper part, sparsely pubescent to subglabrous. Leaves oblanceolate-linear to oblong-linear, 3-8 × 1-2 cm, papery, sparsely pubescent to ± glabrous, lower ones attenuate into a petioloid base, middle and upper ones sessile, basally scarcely auriculate, margin somewhat remotely coarsely dentate or pinnatifid with 6-10 linear to shortly linear-oblong, acute, remotely denticulate or entire, ascending-spreading lateral lobes, apex acute or subacute. Capitula radiate, few to many, terminal, corymbose; peduncles 5-10 mm, slender, subglabrous, with a few linear-lanceolate bracteoles. Involucres narrowly campanulate, 5-6 × 2.5-3 mm, calyculate; bracts of calyculus 3 or 4, linear-subulate, inconspicuous; phyllaries 13-15, linear-lanceolate, 0.3-0.5 mm wide, connate to middle or above, herbaceous, glabrous, margin narrowly hyaline, apically acute. Ray florets 3; corolla tube ca. 2 mm; lamina yellow, minute, 1-1.5 mm, 3-veined, 3-denticulate. Disk florets many; corolla yellow, ca. 3.5 mm, with ca. 2 mm tube and narrowly funnelform limb; lobes ovate-triangular, ca. 0.5 mm, apically subobtuse. Anthers ca. 0.8 mm, basally very shortly obtuse-auriculate, appendages ovate; antheropodia dilated toward base. Style branches ca. 0.3 mm. Achenes cylindric, 2.5-2.8 mm, sparsely minutely pubescent. Pappus white, ca. 3 mm, bristles expanded at base. Fl. May.

● Open wet pastures; 1500-2400 m. NW Yunnan.


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