Barthea barthei (Hance ex Benth.) Krasser

Shrubs 70-150(-300) cm tall. Stems terete; bark grayish white; branches numerous, nearly 4-sided, puberulous and glandular furfuraceous. Petiole 0.5-1.5 cm, densely furfuraceous or glabrous; leaf blade elliptic, suborbicular, ovate, or ovate-lanceolate, (3.5-)6-11(-15) × (1.8-)2.5-5.5 cm, stiffly papery to subleathery, abaxially densely furfuraceous, adaxially glabrous, secondary veins 2 on each side of midvein, base obtuse to broadly obtuse, margin entire or serrulate, apex acuminate. Inflorescences cymes, (1-)3-flowered but usually only 1 fertile; peduncle ca. 7 mm, 4-sided, furfuraceous. Hypanthium ca. 0.6 or 1.4 cm, 4-sided, very narrowly winged on ribs, densely furfuraceous. Calyx lobes shortly triangular or linear-lanceolate, ca. 3 or 1.5-1.7 mm. Petals white, pink, or purple, oblong-ellitic to obovate, 1.1-1.8 × 1-1.6 cm, apically oblique. Filaments of longer stamen ca. 8 mm; anthers ca. 1 cm, spur ca. 2 mm and curved, basal 2 setae ca. 3.5 mm. Filaments of shorter stamen ca. 6 mm; anthers ca. 3 mm, spur inconspicuous, basal setae ca. 2.5 mm. Ovary 4-sided, glabrous. Capsule oblong, ca. 1 or 1.8 × 0.6 or 1.1 cm, 4-sided, furfuraceous, wings 1-2 mm wide on ribs. Fl. Jan-May or Oct-Dec, fr. Oct-Dec or May.

Fujian, Guangdong, Guangxi, Hunan, Taiwan.

● Mixed forests, forested mountain slopes, open thickets, wooded ravines, along streams; 400-2500(-2800) m.