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

36. Sinosenecio changii (B. Nordenstam) B. Nordenstam, Compositae Newslett. 49: 4. 2011.

莲座狗舌草 lian zuo gou she cao

Tephroseris changii B. Nordenstam, Opera Bot. 44: 44. 1978; Senecio rosulifer C. C. Chang, Bull. Fan Mem. Inst. Biol., Bot. 6: 58. 1935 ["rosuliferus"], not H. Léveillé & Vaniot (1910).

Herbs, subscapigerous. Rhizomes ca. 10 mm in diam., clad in persistent brown petiole bases. Stems solitary, rarely 2 or 3, erect, scapiform, to 40 cm tall, simple, floccose-tomentose, fulvous pubescent especially in lower part. Radical leaves several, rosulate, present at anthesis; petiole 2.5-4 cm, rather broad, floccose-tomentose and fulvous hirtellous, basally expanded; blade ovate-oblong, 2.5-9 × 2-6 cm, papery, abaxially densely floccose-tomentose, adaxially thinly floccose-tomentose and densely adpressed hirtellous, pinnately veined, lateral veins 10-14, veins prominent, base cordate, margin irregularly shallowly repand-dentate, teeth mucronulate, apex rounded, apiculate. Stem leaves usually 1, on lower part of stem, similar to basal ones but smaller. Capitula 1.8-2 cm in diam., 6-15, arranged in simple to compound subumbelliform terminal corymbs; peduncles 1-4.5 cm, densely arachnoid, usually bracteate at base, not bracteolate or with 1 or more linear bracteoles in upper part; bracts 5-10 mm, densely tomentose. Involucres broadly campanulate to hemispheric, ca. 5 × 5 mm, not calyculate; phyllaries ca. 13, linear-lanceolate, 4-5 × 1-1.5 mm, sparsely arachnoid, margin broadly scarious, apically acute or acuminate, purplish and puberulent. Ray florets ca. 18; corolla tube ca. 2.5 mm, glabrous; lamina yellow, oblong, ca. 9 × 2-2.9 mm, 4-veined, apically 3-denticulate, obtuse. Disk florets numerous; corolla yellow, ca. 4 mm, with 1.5-2 mm tube and campanulate limb; lobes ovate-lanceolate, ca. 1 mm, apically acute, papillose. Anthers ca. 1.3 mm, basally obtuse, appendages lanceolate. Style branches recurved, 0.6-0.7 mm. Achenes cylindric, ca. 1.5 mm, smooth, glabrous. Pappus white, ca. 3 mm. Fl. May-Jul, fr. Jun-Aug. 2n = 48*.

● Roadsides, forest margins; 1800-2700 m. Chongqing (Nanchuan).

Sinosenecio changii was recently provisionally transferred from Tephroseris to Sinosenecio on the basis of molecular and morphological evidence. The pinnately veined leaves and numerous ray florets are somewhat unusual in the genus, and the systematic position of this taxon will be further investigated.


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