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

6. Senecio morrisonensis Hayata, J. Coll. Sci. Imp. Univ. Tokyo. 30(1): 155. 1911.

玉山千里光 yu shan qian li guang

Herbs, perennial, rhizomatous. Stem solitary, erect, 30-60 cm tall, not branched below synflorescence or branching from near base, glabrous. Basal and often also lower stem leaves withered by anthesis; stem leaves numerous, subsessile or shortly petiolate; leaf blade broadly lanceolate to oblong-lanceolate, 7-14 × 1.3-3.5 cm, papery, glabrous, base cuneate-attenuate, margin unlobed and rarely serrate or usually coarsely serrate-lobulate or coarsely dentate, or deeply pinnately lobed, with 8-10 oblong, irregularly mucronulate-lobulate lateral lobes, apex acute-acuminate or acuminate-attenuate; upper leaves smaller. Capitula radiate, numerous, arranged in terminal or terminal and upper axillary corymbs; peduncles 1-2 cm; bracteoles 2 or 3, linear, 2-3 mm, sparsely pubescent or subglabrous. Involucres subcylindric, 4.5-6 × 2-4 mm, calyculate; bracts of calyculus 4 or 5, linear, ca. 1.5 mm; phyllaries usually 13, oblong, 0.5-1 mm wide, herbaceous, glabrous, margin narrowly scarious, apically triangular-acuminate, subobtuse, purplish and puberulent. Ray florets 5 or 6; corolla tube ca. 4.5 mm; lamina yellow, 8-9 × ca. 1.5 mm, 4-veined, 3-denticulate. Disk florets 14 or 15; corolla yellow, 6-6.5 mm, with 3.5-4 mm tube and funnelform limb; lobes oblong-lanceolate, ca. 1.5 mm, apically acute, papillose. Anthers ca. 2.5 mm, basally shortly obtuse-auriculate, appendages ovate-lanceolate; antheropodia rather broad, basally gradually dilated. Achenes cylindric, ca. 3 mm, sparsely hirtellous to subglabrous. Fl. Jun-Oct.

● Forests, forest margins, mountain slopes, rocky riverbeds; 1600-3300 m. Taiwan.

1 Leaves pinnatifid to pinnatipartite into narrow often coarsely lobulate lobes.   6a var. morrisonensis
+ Leaves lanceolate, marginally unlobed, serrate, coarsely serrate, or serrate-lobulate.   6b var. dentatus

Lower Taxa


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