掌裂合耳菊 zhang lie he er ju

Herbs, rhizomatous. Rhizomes robust, woody, 8-10 mm in diam. Stem solitary, erect, striate, 35-40 cm tall, flexuous, simple, glabrous. Leaves long petiolate, basal leaves withered at anthesis. Median leaf petiole 3.5-4 cm, basally not expanded; blade abaxially pale green, adaxially green, ovate-triangular, 4-8 × 2.5-6.5 cm, abaxially glabrous, adaxially shortly pubescent on veins, palmately veined, veins prominent abaxially, base cordate, margin deeply palmately 5-sect; terminal lobe broader, oblong-lanceolate, 2.5-3 cm wide, coarsely dentate or lobed, apex acuminate, lateral lobes narrow, 2- or 3-denticulate. Upper leaves similar to median leaves, smaller; uppermost leaves shortly petiolate or subsessile, lanceolate, 3-lobed or entire. Capitula discoid, numerous, arranged in terminal and upper leaf axils, corymbose-paniculate; peduncles 4-5 mm, sparsely puberulent, with 1 or 2 scalelike bracteoles. Involucres cylindric, 4-5 × 1.5-2 mm, calyculate; bracts of calyculus 1 or 2, scalelike; phyllaries 3, broadly oblong, ca. 2 mm wide, subleathery, glabrous, margin broadly scarious, apically obtuse and ciliate. Florets 3, distinctly exceeding phyllaries, corolla yellow, 6-7 mm, with ca. 3 mm tube and funnelform limb; lobes ovate-lanceolate, apically acute, puberulent. Anthers linear, 2.5-3 mm, basally long caudate; antheropodia slightly dilated at base. Style branches excurved, apically obtuse, fringed with papillae. Achenes 3-3.5 mm, glabrous, ribbed. Pappus reddish, 6-7 mm. Fl. May.

● Guizhou (Guiyang).