Plant epipetric; deciduous; with tubers from which upright stems arise, monoecious. Tubers subglobose, to 20 mm across. Stems 6-50 cm long, to 8 mm across, glaborus. Stolons to 15 cm long, 4 mm across. Stipules caducous, ovate, apex acuminate, margins serrate, to 16 mm long, 10 mm wide, glabrous. Leaves many, basal and cauline, herbaceous, asymmetric, ovate, shallowly lobed, divided to 1/3 of leaf length at most, apex subacute to acuminate, base cordate, margins irregularly serrate, to 27 cm long, 18 cm wide, remotely minutely scaberulous adaxially, lobes (number), (shape), apex (shape); venation palmate; petioles to 16 cm long, 5.5 mm across, glabrous. Inflorescences arise from stem, 6-30 cm long, glabrous; peduncles (inflorescence axis) to 17 cm long, 4 mm across, erect to pendent. Bracts pinkish, caducous, narrowly ovate to rotund, apex acute, margins serrate, to 13 mm long, 10 mm wide, glabrous. Flowers of both sexes pinkish, glabrouos. Staminate flowers: tepals 2, cordate to orbiculate, 12-22 mm long, 13-20 mm wide; androecium actinomorphic / zygomorhpic; stemans 20-37, golf-club shape, yellow, filaments free, 2-3 mm long; anthers obovoid, 1.2-1.6 mm long, 1.0-1.1 mm across. Pistillate flowers: tepals 2(-3), rotund to orbicular, 12-19 mm long, 11-19 mm wide; ovary pinkish when blooming, inferior, glabrous; styles 3, yellow, free, forked once, 4.6-5.4 mm long; stigmasin a band and spiraled. Fruits capsular, dehiscence, pendent, trigonous, subequally or equally 3-winged, wings nearly triangular, obtuse at apex, to 19 mm long, 20 mm wide; locules 3, axile placentation, placental branches 2 per locule.

TAICHUNG: Chunghsingling-Takeng Peng 9990, 9992 (HAST).
NANTOU: Tongpu-Lele Suzuki s. n. 1935 (TAI).
CHIAYI: Huwei-Chiehtung Peng 8894 (Holotype, HAST; Isotypes, GH, K, MO, NY, TAI, TAIF, US); Lungmei-Tsaoshan Peng 10079 (HAST); Taiping Chen 395 (HAST).
KAOHSIUNG: Chishan-Tainan Chung s. n. 1985 (PPI); Shuanghsi Yang 3464.

Stolons: present

Stipules: caducous

Stipules: shape: ovate

Stipules: apex: acuminate

Stipules: margin: serrate

Stipules: length (mm): 16 mm

Stipules: width (mm): 10 mm

Stipules: indumentum: glabrous

Leaves: shape: ovate, palmately divided

Leaves: apex: acuminate

Leaves: margin: serrate

Leaves: length (cm): 10-27 cm

Leaves: width (cm): 5-18 cm

Leaves: indumentum: scaberulous

Venation: palmate

Veins: number: 5-8

Petioles: length (cm): 5-16 cm

Petioles: diameter (mm): 6 mm

Petioles: indumentum: glabrous

Bracts: caducous

Bracts: shape: ovate, rotund

Bracts: apex: acute

Bracts: margin: serrate

Bracts: length (mm): 13 mm

Bracts: width (mm): 10 mm

Bracts: indumentum: glabrous

Inflorescence: length (cm): 6-30 cm

Peduncles:: erect, pendulous

Peduncles: length (cm): 4-17 cm

Peduncles: diameter (mm): 4 mm

Flowers: color: pinkish

Male flower petals: number: two

Outer 2 tepals of male flowers: shape: orbicular

Outer 2 tepals of male flowers: length (mm): 12-22 mm

Outer 2 tepals of male flowers: width (mm): 13-20 mm

Stamens: number: 20-37

Stamens: shape: golf-club shaped

Anthers: shape: obovoid

Anthers: length (mm): 1.2-1.6 mm

Anthers: diameter (mm): 1-1.1 mm

Filaments: length (mm): 2-3 mm

Female flower tepals: number: three, two

The largest tepals of female flowers: shape:: rotund, orbicular

The largest tepals of female flowers: length (mm): 12-19 mm

The largest tepals of female flowers: width (mm): 11-19 mm

Styles: number: three

Styles: length (mm): 4.6-5.4 mm

Locules number: three

Fruits: typ: capsule

Fruits: wings: 3-winged

Abaxil wing of fruits: shape: triangular

Abaxil wing of fruits: length (mm): 19 mm

Abaxil wing of fruits: width (mm): 20 mm

Seeds: shape: obclavate

Seeds: length (mm): 0.4-0.52 mm

Seeds: diameter (mm): 0.1-0.16 mm

Seed apex: shape: acuminate

Seed micropylar end: abruptly constricted

Chrosome numer 2n=: 36

Elevation (m): 100-1000 m

Distribution: Taichung, Nantou, Chiayi, Tainan, Kaohsiung

Plant: growth form: epipetric

Phenology: deciduous

Stems: habit: tuberosous