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

13. Senecio royleanus Candolle, Prodr. 6: 366. 1838.

珠峰千里光 zhu feng qian li guang

Senecio graciliflorus Candolle var. hookeri C. B. Clarke; S. tanacetoides Kunth & C. D. Bouché.

Herbs, perennial, rhizomatous. Stem solitary, erect, ca. 60 cm tall, ± flexuous in upper part, not branched below synflorescence, fulvous puberulent when young. Basal and lower stem leaves withered and shed by anthesis; median stem leaf petioles 1.5-3 cm, sparsely puberulent, without or with small, entire or toothed auricles; blade adaxially green, ovate-oblong, 10-15 × 6-8 cm, papery, abaxially sparsely puberulent on rather prominent veins, adaxially glabrous or sparsely puberulent, pinnatipartite into a triangular-lanceolate, attenuate terminal lobe and 10-12 ovate-lanceolate or oblong-lanceolate, acuminate-attenuate, mucronulate-serrate lateral lobes. Upper leaves smaller, not auriculate. Uppermost leaves lanceolate or linear-lanceolate, basally cuneate, shortly petiolate or subsessile, margin unequally serrate, apically acuminate or long acuminate. Capitula radiate, numerous, arranged in dense compound terminal and upper axillary corymbs; peduncles 3-5(-10) mm, slender, sparsely to densely puberulent, with 1-3 linear-subulate bracteoles. Involucres narrowly campanulate, 4-5 × 1.5-2.5 mm, calyculate; bracts of calyculus 5 or 6, linear, unequal, 1-3 mm; phyllaries 8, linear, ca. 1 mm wide, herbaceous, sparsely puberulent, margin narrowly scarious, apically obtuse, purplish and puberulent. Ray florets 4 or 5; corolla tube ca. 3.5 mm; lamina yellow, oblong, ca. 4 × 1 mm, 3- or 4-veined, 3-denticulate. Disk florets 8 or 9; corolla yellow, ca. 6 mm, with ca. 3 mm tube and funnelform limb; lobes 5, ovate-triangular, ca. 1 mm, apically acute, papillose. Anthers ca. 1.5 mm, basally obtuse-auriculate, appendages ovate-lanceolate; antheropodia moderately long, basally slightly dilated. Achenes cylindric, ca. 2.5 mm, glabrous. Pappus white, ca. 4.5 mm. Fl. Aug-Sep.

Grassy slopes, by streams; 2900-3600 m. Xizang (Yadong) [Bhutan, Kashmir, Myanmar].


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