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

25. Sinosenecio leiboensis C. Jeffrey & Y. L. Chen, Kew Bull. 39: 242. 1984.

雷波蒲儿根 lei bo pu er gen

Herbs, shortly stoloniferous, with leafy stems. Rhizome elongated, ca. 4 mm in diam. Stems solitary, erect, ca. 60 cm tall, ascending and 5-6 mm in diam. at base, villous, with brownish hairs. Radical and lower stem leaves withered by anthesis; median stem leaves 3 or 4; petiole 7-9 cm, basally somewhat expanded, villous, with fulvous multicellular hairs; blade broadly ovate or reniform, 4-5 × 5.5-7.5 cm, papery, abaxially sparsely pilose mainly on veins, adaxially sparsely pilose, palmately 5-veined, base deeply cordate, palmately 5-7-lobed, apex obtuse, mucronulate; lobes broadly triangular, teeth callose-mucronulate, laterally callose-unidenticulate. Upper stem leaves shorter petiolate, smaller. Uppermost leaves shortly petiolate, lanceolate. Capitula 5-9 in terminal corymbs; peduncles 0.5-1 cm, puberulent, basally bracteate. Involucres obconic-campanulate, hemispheric when flattened, 5-6 × 5-6 mm, not calyculate; phyllaries 13-15, green, oblong-elliptic, 5-6 × 2-2.5 mm, herbaceous, abaxially purplish red puberulent, white fimbriate on upper margins and apex, margin scarious, apically acute. Ray florets 13; corolla tube ca. 2 mm, glabrous; lamina yellow, oblong, 9-10 × 2.5-3 mm, 4-veined, apically 3-denticulate, obtuse. Disk florets many; corolla yellow, ca. 3 mm, with ca. 1.8 mm tube and campanulate limb; lobes lanceolate, ca. 1.5 mm, apically acute. Anthers oblong, basally obtuse, ca. 1.5 mm, appendages lanceolate. Ovary cylindric, ca. 1 mm, smooth, glabrous; style branches recurved. Pappus absent. Fl. May-Jun, fr. Jun-Jul. 2n = 48*.

● Valley thickets, wet places; ca. 2000 m. SW Sichuan (Leibo).

Sinosenecio leiboensis is very similar to S. globiger in posture, leaf shape, and the epappose achenes. From the latter, it differs only in the phyllaries purplish puberulent abaxially and in the presence of short stolons.


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