单头蒲儿根 dan tou pu er gen

Gerbera hederifolia Dümmer, Gard. Chron., ser. 3, 52: 482. 1912 ["hederaefolia"]; Cremanthodium hederifolium (Dümmer) C. C. Chang; Senecio goodianus Handel-Mazzetti.

Herbs, scapigerous. Rhizomes short, stout, 5-6 mm in diam., clad in persistent brown petiole bases. Stems solitary, erect, scapiform, 13-30 cm tall, densely fulvous tomentose, glabrescent to ± glabrous, simple. Leaves radical, long petiolate; petiole stout, 3-7 cm, densely fulvous tomentose; blade adaxially green, broadly ovate or ovate-cordate, 3-7 × 2.7-5.5 cm, thickly papery, abaxially densely fulvous tomentose, adaxially ± glabrous, palmately 5-7-veined, veins inconspicuous, margin entire, repand, or dentate with deltoid teeth, apex rounded. Capitula solitary, terminal, 4-5 cm in diam., scape with few linear-lanceolate bracteoles in upper part. Involucres cylindric, obconic-campanulate when flattened, 8-10 × 5-8 mm, not calyculate; phyllaries ca. 15, ovate-oblong or linear-oblong, 8-10 × 2.5-3 mm, densely white tomentose, glabrescent to ± glabrous, margin broadly scarious, apically acute, purplish and fimbriate-ciliate. Ray florets 10-13; corolla tube 3-3.5 mm; lamina yellow, oblong or oblanceolate-oblong, 5-9-veined, apically 3-denticulate, obtuse to rounded. Disk florets numerous; corolla yellow, ca. 7.5 mm, with ca. 3.5 mm tube and campanulate limb; lobes ovate-oblong, ca. 2 mm, apically acute. Anthers oblong, ca. 2.8 mm, basally obtuse to rounded, appendages ovate-lanceolate. Style branches ca. 0.8 mm, truncate, papillose. Achenes cylindric, 4-5 mm, smooth, glabrous, ribbed. Pappus white, ca. 7 mm. Fl. Apr-May, fr. May-Jun. 2n = 60*.

● Woods on slopes, limestone cliffs; 500-2000 m. NE Chongqing, SE Gansu, W Hubei, SW Shaanxi, NE Sichuan.

Sinosenecio hederifolius is similar in leaf shape to Gerbera but completely different in floral structure.