Begonia rieckei Warb.

국표에 없다

• Bot. Jahrb. Syst. 13: 387. (1891) 

• This name is reported by Begoniaceae as an accepted name in the genus Begonia (family Begoniaceae).

  The record derives from WCSP (data supplied on 2024-06-04) which reports it as an accepted name (record 362846)

Diagnostic Description

Begonia rieckei is a common species in eastern Malesia and is morphologically highly variable. Several species have been described in the Begonia rieckei complex, but the distinguishing characters are often minor and therefore we advocate a wider concept (see Hughes, 2008).

• Provided by: [B].The Begonia TEN / Begonia Resource Centre (Royal Botanic Garden Edinburgh)
• 1

Morphology

Perennial, monoecious herb, erect, up to c.1 m tall; stems glabrous except for microscopic glandular hairs. Stem branched, internodes 2–15 cm long, swollen at the nodes, green or red or brownish red with white spots. Leaves basifixed, alternate; stipules caducous, 2.5–3 × 1.2–1.8 cm, elliptic, boat-shaped, thick, midrib abaxially prominent, glabrous, apex acute, margin entire, reddish to reddish-greenish; petioles 8–23 cm long, adaxially shallowly channelled, concolorous with the stem, glabrous, except for the microscopic glandular hairs; lamina basifixed, 10–26.5 × 7–14 cm, asymmetrical, broadly ovate to broadly elliptic, margin entire to dentate to scalloped and denticulate between the larger teeth, base cordate and lobes sometimes overlapping, apex acute to acuminate, adaxial surface green or reddishgreenish, with white spots between the veins in juvenile stage, glabrous, smooth velvety or glossy, abaxially pale green or maroon red, sparsely hairy on the veins, veins reddish green; venation palmate-pinnate, primary veins 7–8, actinodromous, secondary veins craspedodromous. Inflorescences: bisexual; compressed cymose with up to 12 female flowers and 25 male flowers in a mixed inflorescence, peduncles c.1(–10) mm long, greenreddish, glabrous, bracts broadly elliptic to suborbicular, 2–2.5 × 1.8–2.4 cm, thick, pale green or reddish-greenish, glabrous. Male flowers: pedicels 11–15 mm long, white or white tinged with pink, glabrous; tepals 2, white or white tinged with pink, 5–12 × 2–12 mm, elliptic to suborbicular, apex rounded, outer surface glabrous; androecium yellow, symmetrical, on a c.1 mm long column; stamens c.60, free filaments 0.5–1 mm long, fused at the base, anthers up to c.0.5–1.5 mm long, narrowly obovate, dehiscing through unilaterally positioned slits that are c.1/2 as long as the anthers. Female flowers: pedicels c.6 mm long, green-reddish, glabrous; tepals 5, white or white tinged with pink, subequal, 6–12 × 2–7 mm, ovate to elliptic, abaxially glabrous; ovary (excluding wings) 6–12 × 6–12 mm, ellipsoid, ovoid or globoid, glabrous, red or greenish or white, locules 3, placentation axile, placentae bilamellate, wingless or with 3 poorly developed wings, very narrow, green, widest point up to 1 mm (apically to subapically); style c.3 mm long, basally fused, 3-branched, each stylodium bifurcate in the stigmatic region, stigmatic surface a spirally twisted papillose band, orange. Fruits: peduncles 5–15 mm long; pedicels 12–25 mm long; seed-bearing part ellipsoid, ovoid, or globoid, 15–20 × 10–15 mm (excluding the wings), glabrous, fleshy, indehiscent, wing shape as for ovary, up to 2 mm at the widest point (apically to subapically). Seeds barrel-shaped, c.0.3 mm long.

• Provided by: [B].The Begonia TEN / Begonia Resource Centre (Royal Botanic Garden Edinburgh)
• 1

Habitat

Primary to secondary lowland to upland forest, in half to full shade, at 10–1500 m elevation.

• Provided by: [B].The Begonia TEN / Begonia Resource Centre (Royal Botanic Garden Edinburgh)
• 1

Distribution

Widespread in east Malesia (Sulawesi, Philippines, Moluccas, New Guinea, Pacific Islands). In Sulawesi from North, Gorontalo and Central Provinces.

• Provided by: [B].The Begonia TEN / Begonia Resource Centre (Royal Botanic Garden Edinburgh)
• 1

Threats

Proposed IUCN conservation category. Least Concern (LC). Begonia rieckei has a wide distribution in central and eastern Malesia (EOO, 5,791,908 km2 ) and occurs in various habitats including primary to strongly disturbed lowland to upland forests, and even oil palm plantations. Some of the populations are found in protected areas in Central Sulawesi Province, such as Pangi Binangga Forest Reserve and Lore Lindu National Park. Consequently, we assess this species as Least Concern (IUCN Standards and Petitions Subcommittee, 2019).

Begonia rieckei Warb. (worldfloraonline.org)

 

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https://youtu.be/uHj8iBxVz5w?t=425