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

6. Parasenecio hastatus (Linnaeus) H. Koyama in Iwatsuki et al., Fl. Japan. 3b: 52. 1995.

山尖子 shan jian zi

Rhizomes procumbent, with numerous fibrous roots. Stem stiff, erect, 40-150 cm tall, simple, sulcate, glabrous or subglabrous in lower part, densely glandular puberulent in upper part. Lower leaves withered and fallen at anthesis. Median leaf petiole 4-5 cm, narrowly winged, not expanded at base; blade abaxially pale green, adaxially green, triangular-hastate, 7-10 × 13-19 cm, basal lateral lobes sometimes incised-lobulate, abaxially densely pubescent, adaxially glabrous or sparsely puberulent, base hastate or subcordate, margin irregularly finely toothed, apex acute or acuminate. Upper leaves smaller; basal lobes rudimentary, triangular or subrhombic, base truncate or broadly cuneate, apex acuminate. Uppermost bracteal leaves lanceolate to linear. Capitula numerous, pendulous, apically and in upper leaf axils narrowly pyramidal-paniculate; peduncles 4-20 mm, densely glandular puberulent. Involucres cylindric, 9-11 × 5-8 mm; phyllaries 7 or 8, linear or lanceolate, ca. 2 mm wide, apex acute, with 2 subulate bractlets. Florets 8-15(-20); corolla whitish, 9-11 mm, with ca. 4 mm tube narrowly campanulate, limb lobes lanceolate, apically acuminate. Anthers caudate at base. Style branches slender, excurved, apically truncate, papillose. Achenes pale brownish, cylindric, 6-8 mm, glabrous, ribbed. Pappus white, equal to achenes or shorter. Fl. Jul-Aug, fr. Sep-Oct. 2n = 40, 60.

Forest understories, slopes, grasslands, forest margins, roadsides. Gansu, Hebei, Heilongjiang, Jilin, Liaoning, Nei Mongol, Ningxia, Shaanxi, Shanxi [N Japan, Korea, Mongolia, Russia (Far East)].

1 Leaves abaxially and phyllaries outside densely glandular puberulent.   6a var. hastatus
+ Leaves glabrous or veins sparsely puberulent; phyllaries outside glabrous or puberulent only at base.   6b var. glaber

Lower Taxa


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