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

27. Sinosenecio phalacrocarpus (Hance) B. Nordenstam, Opera Bot. 44: 50. 1978.

秃果蒲儿根 tu guo pu er gen

Senecio phalacrocarpus Hance, J. Bot. 19: 151. 1881.

Herbs, rhizomatous, with leafy stems; upper parts arachnoid-tomentose. Stems solitary, erect, ca. 30 cm or taller, robust, hollow, 5-6 mm in diam. at base, not branched below synflorescence. Radical leaves long petiolate, withered by anthesis; median stem leaf petiole 5-7 cm, basally slightly expanded, thinly arachnoid; blade adaxially green, reniform, ca. 6 × 8-9 cm, abaxially thinly arachnoid-tomentose, adaxially sparsely pubescent, palmately 5-veined, margin irregularly sublobed or coarsely dentate, with apically mucronulate deltoid teeth. Upper leaves smaller, shallowly cordate, shortly petiolate. Capitula 5 to many, arranged in terminal and axillary subumbelliform corymbs, ca. 2.5 cm in diam.; peduncles 0.5-2.5 cm, distally slightly dilated, basally not bracteate, sparsely arachnoid-tomentose, glabrescent, not bracteolate. Involucres hemispheric when flattened, ciliate; phyllaries ca. 10, green, lanceolate, herbaceous, sparsely arachnoid or glabrescent, 3-veined, margin scarious, apically ciliate, acute or acuminate. Ray florets ca. 13; corolla tube 2-2.5 mm, glabrous; lamina yellow, oblong, ca. 13 × 3 mm, 4-veined, apically 3-denticulate. Disk florets many; corolla yellow, ca. 4.5 mm, with 1.5-1.7 mm tube and campanulate limb; lobes lanceolate, apically acute. Anthers ca. 1.5 mm, basally obtuse, appendages lanceolate. Style branches ca. 0.8 mm. Achenes cylindric, ca. 1.5 mm, sparsely minutely glandular puberulent. Pappus absent. Fl. Jun.

● Sides of rocks, forest margins. Guangdong (Bei Jiang).

Sinosenecio phalacrocarpus is very likely related to S. globiger but differs by the leaf blade abaxially arachnoid-tomentose and the achenes glandular puberulent.


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