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Flora of Taiwan | Family List | Begoniaceae | Begonia

Begonia palmata D. Don, Prodr. Fl. Nepal. 223. 1825.


Begonia palmata

Credit: Ching-I Peng

  • Begonia ferruginea Hayata
  • Begonia laciniata Roxb.
  • Begonia randaiensis Sasaki

    Plant terrestrial or epipetric; evergreen; with long creeping rhizomes from which upright stems arise, monoecious. Stems 35-90 cm long, to 23 mm across, rusty villose. Rhizomes ___ cm long, to 21 mm across, (hair). Stipules caducous, narrowly ovate to ovate, apex acuminate, margins entire, to 28 mm long, 18 mm wide, rusty villous abaxially. Leaves many, basal and cauline, herbaceous, asymmetric, broadly ovate to very broadly ovate, shallowly lobed, divided to 1/3 of leaf length at most, apex acuminate, base cordate, margins irregularly denticulate or serrulate, 7-31 cm long, 6-27 cm wide, very densely scabrous, hirsute or rusty villose on both surface, hirsute at margins; venation palmate; petioles, 6-27 mm long, 8 mm across, densely rusty villous, lobes (number), (shape), apex (shape). Inflorescences arise from stem, 9-24 cm long, densely rusty villous; peduncles (inflorescence axis) 6-16 cm long, to 4 mm across, erect. Bracts caducous, ovate, apex acute, margins ciliate, 7-15 mm long, 4-8 mm wide, densely villous. Flowers of both sexes pinkish, outer tepals densely villous. Staminate flowers: tepals 4, outer two obovate to orbicular, 10-26 mm long, 9-24 mm wide, inner two oblanceolate to narrowly obovate, 9-24 mm long, 5-9 mm wide; androecium actinomorphic; stemans 116-187, golf-club shaped, yellow, filaments free, 0.8-2.4 mm long; anthers narrowly obovoid, 1.9-2.3 mm long, 0.9-1.2 mm across. Pistillate flowers: tepals 5-6(7), oblanceolate to orbicular, unequal, the largest 9-24 mm long, 8-22 mm wide, the smallest 8-21 mm long, 4-9 mm wide; ovary (color) when blooming, inferior, rusty villous; styles 2, yellow, free, forked once, 4.9-5.6 mm long; stigmas in a band and spiraled. Fruits capsular, dehiscence, nodding, trigonous, unequally 3-winged, abaxial wing triangular, elliptic to narrowly oblong, 15-32 mm long, 7-14 mm wide, lateral wings 4-6 mm long, 6-13 mm wide; locules 2, axile placentation, placental branches 2 per locule.

    TAIPEI: Hapen, Nakamura s.n. Aug. 5, 1938 (TAI), Suzuki s.n. Jul. 21, 1938 (TAI).
    HUALIEN: Chinkualiao, Sasaki s.n. Mar. 18, 1918 (TAIF).
    TAICHUNG: Kukuan, Liu s.n. Oct. 1979 (TCF); Pahsienshan, Sasaki 5660 (TAI). NANTOU: Chitou, Chen 218 (HAST), Peng 5301, 10506 (HAST), Chang s.n. Sep. 28, 1978 (PPI), Liu s.n. Dec. 18, 1961 (NTUF), Lai s.n. Dec. 22, 1979 (TCF), Ying 726 (NTUF), Liu 514 (NTUF), Lai 726 (NTUF), Yamamoto s.n. Oct. 24, 1933 (TAI), Chito-Shanlinhsi, Peng 5346 (HAST); Fenghuangshan, Yang 1004 (TAI), Chen 754 (HAST), Kuo 10337 (TAI); Tungpu Hotspring-Tsaihung Waterfall, Peng 6539 (HAST); Hoshe, Peng & Chen 10931 (HAST), Suzuki 324 (TAI), Hoshe Giant Tree, Peng & Chen 10985 (HAST); Huisun Forest Station, Chang 12273 (PPI), Liu 8523 (TCF), Ying 1176 (NTUF); Guandaushi, Chang 6397 (PPI), Lu & Ou s.n. Sep. 18, 1969 (TCF), Meiyuan, Sasao s.n. Apr. 25, 1931 (TCF), Satio s.n. Aug. 30, 1924 (TAI), Yoshihide s.n. Mar. 1929 (TAI), Suzuki s.n. Oct. 12, 1935 (TAI); Shuili, Liu & Kuo 349 (NTUF); Chingshuikou, Liu & Kuo 349 (NTUF), Huang 1920 (NTUF), Huang 1920 (NTUF); Meihsi-Puli, Kudo & Mori 2363 (TAI); Shuishe, Hayata s.n. May 1914 (TAIF), Sasaki s.n. Sep. 12, 1929 (TAI); Tungpushan, Sasaki s.n. Oct. 6, 1909 (TAIF); Yuchin, Shimada s.n. Aug. 4, 1929 (TAIF); Tachuan, Sasaki s.n. Jul. 25, 1932 (TAI); Puli, Mao 2092 (TAI); Tsuifeng, Suzuki s.n. Aug. 28, 1932 (TAI); Sun-Moon Lake, Kuoh 3885 (TAI); Wangyang, Sasaki s.e. s.n.
    CHIAYI: Lungmei-Tsaoshan, Peng 10076 (HAST); Chiehtung-Tungshan, Peng 8872 (HAST); Fenchihu, Feung & Kao 4926 (TAI), Ying 4457 (NTUF); Fenchihu-Tolin, Sasaki s.n. Feb. 1913 (TAIF); Alishan, Hayata & Sasaki s.n. Jan. 1912 (NTUF), Huang & Kao 1773 (TAI); Meishan, Kawakami s.n. Apr. 1909 (TAIF).
    KAOHSIUNG: Tengchih, Chen & Peng 358 (HAST), Chen 543, 733 (HAST), Chung 307, Yang 5678, 6093, 6094, 6101 (PPI), Lu & Ou 6851 (TCF), Huang 6467 (TAI), Yamazai et al. 869 (TAI); Tona Logging Trail, Chen & Peng 377 (HAST); Shanping, Chen 101, 520 (HAST), Huang s.n. Nov. 5, 1986 (PPI), Chune s.n. Jul. 7, 1984 (PPI), Ou 2887 (TCF), Lu & Ou 3324 (TCF), Liu & Ou 2086 (TCF), Chang 2081 (TAI), Hunag 4934 (TAI); Lungchien-Hsinanshan, Yamamoto & Mori 711 (TAI); Liukuei, Chao 727 (TAI); Nanfengshan, Chuang 3379 (TAI); Shanping-Nanfengshan, Chang 2084 (TAI).
    PINGTUNG: Machia, Peng 10614 (HAST); Wutoushan, Yang 6197 (PPI); Lilungshan, Chen & Liu 819 (HAST); Peitawushan, Matuda s.n. Nov. 20, 1918 (TAIF), Kuo 28 (PPI); Entrance to Peitawushan, Chen 645, 693, 733, 754 (HAST); Weiliaoshan, Yamada 27 (TAI).
    TAITUNG: Shenshan, s.c. 535 (NTUF); Shenshan-Chienching, Hosakawa 5222 (TAI); Chinshuiying, Chung & Tsang s.n. Oct. 28, 1951 (TAIF), Kueihu, Mori s.n. Jun. 1921 (TAIF), Hsu 3267 (TAI).
    HUALIEN: Lienhuachih, Chang s.n. Jun. 16, 1982 (PPI), Liao s.n. Oct. 20, 1973 (TCF), Mori s.n. Jul. 8, 1936 (TAI); Sasaki s.n . Aug. 19, 1929 (TAI).

    Stolons: absent

    Stipules: caducous

    Stipules: shape: ovate, narrowly ovate

    Stipules: apex: acuminate

    Stipules: margin: entire

    Stipules: length (mm): 28 mm

    Stipules: width (mm): 18 mm

    Stipules: indumentum: villous

    Leaves: shape: broadly ovate, palmately divided

    Leaves: margin: denticulate, serrulate

    Leaves: length (cm): 7-31 cm

    Leaves: width (cm): 6-27 cm

    Leaves: indumentum: villous, densely scabrous

    Venation: palmate

    Veins: number: 7-9

    Petioles: length (cm): 6-27 cm

    Petioles: diameter (mm): 8 mm

    Bracts: caducous

    Bracts: shape: ovate

    Bracts: apex: acute

    Bracts: margin: ciliate

    Bracts: length (mm): 7-15 mm

    Bracts: width (mm): 4-8 mm

    Bracts: indumentum: rusty villose

    Inflorescence: length (cm): 9-24 cm

    Peduncles:: erect

    Peduncles: length (cm): 6-16 cm

    Peduncles: diameter (mm): 4 mm

    Flowers: color: white, pinkish, purplish

    Male flower petals: number: four

    Outer 2 tepals of male flowers: shape: ovate, orbicular

    Outer 2 tepals of male flowers: length (mm): 10-26 mm

    Outer 2 tepals of male flowers: width (mm): 9-24 mm

    Inner 2 tepals of male flowers: shape: oblanceolate, narrowly obovate

    Inner 2 tepals of male flowers: length (mm): 9-24 mm

    Inner 2 tepals of male flowers: width (mm): 5-9 mm

    Stamens: number: 116-187

    Stamens: shape: golf-club shaped

    Anthers: shape: narrowly obovoid

    Anthers: length (mm): 1.9-2.3 mm

    Anthers: diameter (mm): 0.9-1.2 mm

    Filaments: shorter than anthers, equal to anthers

    Filaments: length (mm): 0.8-2.4 mm

    Female flower tepals: number: five, six

    Female flower tepals: equality of size: unequal

    The largest tepals of female flowers: shape:: orbicular

    The largest tepals of female flowers: length (mm): 9-24 mm

    The largest tepals of female flowers: width (mm): 8-22 mm

    The smallest tepals of female flowers: shape: oblanceolate

    The smallest tepals of female flowers: length (mm): 8-21 mm

    The smallest tepals of female flowers: width (mm): 4-9 mm

    Styles: number: two

    Styles: length (mm): 4.9-5.6 mm

    Locules number: two

    Fruits: typ: capsule

    Fruits: wings: 3-winged

    Abaxil wing of fruits: length (mm): 15-32 mm

    Abaxil wing of fruits: width (mm): 7-14 mm

    Lateral wings of fruits: length (mm): 4-6 mm

    Lateral wings of fruits: width (mm): 6-13 mm

    Seeds: shape: broadly ellipsoid

    Seeds: length (mm): 0.31-0.35 mm

    Seeds: diameter (mm): 0.19-0.22 mm

    Seed apex: shape: rotund

    Seed micropylar end: constricted

    Chrosome numer 2n=: 22

    Elevation (m): 600-2100 m

    Distribution: Taipei, Ilan, Taichung, Nantou, Chiayi, Kaohsiung, Pingtung, Taitung, Hualien

    Plant: growth form: terrestrial, epipetric

    Phenology: evergreen

    Stems: habit: with long ascentant rhizomes from which upright stems arise


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