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Flora of Taiwan | Family List | Begoniaceae | Begonia

Begonia nantoensis Lai & Chung, J. Expt. Forest Natl. Taiwan Univ. 6(1): 59. 1992; Chen, Fl. Taiwan. 2nd Ed. 3: 851. 1993.

南投秋海棠

Begonia nantoensis

Credit: Ching-I Peng

Plant terrestrial or epipetric; evergreen; with long creeping rhizomes from which upright stems arise, monoecious. Stems (color), ___ cm long, ___ mm across, (hair). Rhizomes ___ cm long, ___ mm across, (hair). Stipules caducous, (shape), apex (shape), margins entire..., ___ mm long, ___ mm wide, (hair). Leaves many, basal and cauline, (color), herbaceous, asymmetric, (shape), undivided, apex (shape), base(shape), margins entire / irregularly denticulate or serrulate / ..., ___ cm long, ___ cm wide, (hair); venation palmate; petioles (color), ___ cm long, ___ mm across, (hair). Inflorescences arise from stem, ___ cm long, (hair); peduncles (inflorescence axis) ___ cm long, ___ mm across, erect / ascending / pendent. Bracts caducous, (shape), apex (shape), margins entire..., ___ mm long, ___ mm wide, (hair). Flowers of both sexes (color), (hair). Staminate flowers: tepals 4, outer two (shape), ___ mm long, ___ mm wide, inner two (shape), ___ mm long, ___ mm wide; androecium actinomorphic / zygomorhpic; stemans (?), (shape), yellow, filaments free, ___ mm long; anthers (shape), ___ mm long, ___ mm across. Pistillate flowers: tepals 5, (shape), unequal, the largest ___ mm long, ___ mm wide, the smallest ___ mm long, ___ mm wide; ovary (color) when blooming, inferior, (hair); styles 2, yellow, free, forked once, ___ mm long; stigmas in a band and spiraled. Fruits capsular, dehiscence, nodding, trigonous, unequally 3-winged, abaxial wing triangular?, ___ mm long, ___ mm wide, lateral wings ___ mm long, ___ mm wide; locules 2, axile placentation, placental branches 2 per locule.

Stolons: absent

Stipules: caducous

Stipules: shape: ovate

Stipules: margin: entire

Stipules: length (mm): 15 mm

Leaves: shape: ovate, broadly ovate

Leaves: apex: acuminate

Leaves: margin: denticulate, serrulate

Leaves: length (cm): 12-18 cm

Leaves: width (cm): 8-14 cm

Leaves: indumentum: densely scabrous

Venation: palmate

Veins: number: 8-10

Petioles: length (cm): 8-25 cm

Petioles: indumentum: glabrous, pilose

Bracts: caducous

Bracts: margin: entire

Peduncles:: erect

Flowers: color: pinkish

Male flower petals: number: four

Outer 2 tepals of male flowers: shape: broadly ovate

Outer 2 tepals of male flowers: length (mm): 16-23 mm

Outer 2 tepals of male flowers: width (mm): 12-18 mm

Inner 2 tepals of male flowers: shape: elliptic

Inner 2 tepals of male flowers: length (mm): 11-14 mm

Inner 2 tepals of male flowers: width (mm): 5-6 mm

Female flower tepals: number: five

The largest tepals of female flowers: shape:: broadly obovate

The largest tepals of female flowers: length (mm): 17-20 mm

The largest tepals of female flowers: width (mm): 14-18 mm

The smallest tepals of female flowers: shape: elliptic

The smallest tepals of female flowers: length (mm): 12 mm

The smallest tepals of female flowers: width (mm): 7 mm

Styles: number: two

Locules number: two

Fruits: typ: capsule

Fruits: wings: 3-winged

Abaxil wing of fruits: shape: narrowly elliptic

Distribution: Nantou

Plant: growth form: terrestrial

Phenology: evergreen

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


 

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