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

58. Senecio subdentatus Ledebour, Fl. Altaic. 4: 110. 1833.

近全缘千里光 jin quan yuan qian li guang

Senecio coronopifolius N. L. Burman var. subdentatus (Ledebour) Boissier.

Herbs, annual. Stems erect, 5-25 cm tall, slender, branched from base or middle, branches ascending, glabrous. Leaves sessile; blade oblong or broadly linear, 2.5-6.5 × 0.2-1 cm, glabrous, upper leaves dilated and subamplexicaul at base, margin pinnately few dentate or lobulate or subentire, apex obtuse. Uppermost leaves small, linear, bractlike. Capitula radiate, few to many, terminal, laxly corymbose; peduncles 1.5-4 cm, slender, glabrous or sparsely shortly pilose; bracteoles linear-subulate. Involucres cylindric, ca. 6 × 2-4 mm, calyculate; bracts of calyculus 2-5, linear-subulate; phyllaries ca. 13, oblong-lanceolate, ca. 1 mm wide, herbaceous, with membranous margin, glabrous, apically acute and shortly puberulent. Ray florets 7 or 8; corolla tube ca. 2.5 mm; lamina yellow, oblong, ca. 6 × 2 mm, 5-veined, apically obtuse, 3-denticulate. Disk florets many; corolla yellow, 4.5-5 mm, with ca. 2 mm tube and funnelform limb; lobes oblong, ca. 0.7 mm, apically acute. Anthers ca. 1.7 mm, basally obtuse-auriculate, appendages ovate-lanceolate; antheropodia rather stout, basally markedly dilated. Style branches ca. 0.6 mm. Achenes cylindric, ca. 3.5 mm, densely pubescent. Pappus white, 5-6 mm. Fl. May-Jun.

Gravelly places; 400-700 m. Xinjiang [Kazakhstan, Kyrgyzstan, Mongolia, Russia (SC Siberia), Tajikistan, Turkmenistan, Uzbekistan; SW Asia (S Caucasus)].


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