3. Senecio cannabifolius Lessing, Linnaea. 6: 242. 1831.
麻叶千里光 ma ye qian li guang
Herbs, perennial, rhizomatous. Stem solitary, erect, 1-2 m tall. Radical and lower stem leaves withered by anthesis. Median stem leaf petioles short, base auriculate; auricles circular or semicircular, small; blade abaxially pale green, adaxially dark green, oblong-lanceolate, 11-30 × 4-15 cm, margin undivided or pinnately divided into 5-7 lobes, papery, abaxially crisped-puberulent, adaxially glabrous, base cuneate, margin serrate, apex acuminate; terminal lobe large, oblong-lanceolate, apex acute-acuminate; upper leaves 3-partite or undivided, gradually smaller upward. Capitula radiate, numerous, arranged in broad terminal compound corymbs; peduncles 10-20 mm, slender; bracteoles 2 or 3, linear, 2-3 mm, sparsely puberulent. Involucres cylindric, 5-6 × 2-3 mm, calyculate; bracts of calyculus 3 or 4, linear; phyllaries 8-10, oblong-lanceolate, ca. 5 × 1.5 mm, herbaceous, sparsely puberulent or subglabrous, margin broadly scarious, apically acute and puberulent. Ray florets 8-10; corolla tube ca. 3 mm; lamina yellow, ca. 10 × 2.5 mm, 4-veined, 3-denticulate. Disk florets ca. 21; corolla yellow, ca. 8 mm, with ca. 4 mm tube and funnelform limb; lobes ovate-lanceolate, ca. 1.5 mm, apically acute, papillose. Anthers 2-3 mm, basally shortly, rather obtusely, sagittate; appendages ovate-lanceolate; antheropodia rather long and narrow, basally dilated. Style branches ca. 1.5 mm. Achenes cylindric, 3.5-4 mm, glabrous. Pappus straw-colored, ca. 6 mm. Fl. Jul. 2n = 40.
Meadows, forests. Hebei, Heilongjiang, Jilin, Nei Mongol [Japan, Korea, Mongolia, Russia (Far East, E Siberia); Aleutian archipelago].