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This species is accepted, and its native range is Tanzania to S. Africa.
Begonia sutherlandii

[FZ]

Begoniaceae, F. K. Kupicha. Flora Zambesiaca 4. 1978

Morphology General Habit
Plants perennial, 10–35 cm. tall.
Morphology Stem
Stems glabrous or sparsely hairy, sparingly branched, arising from a large ellipsoid tuber.
Morphology Leaves
Leaves sparsely to fairly densely hairy, petiolate; laminae 2·5–14 cm. long, ovate to lanceolate in outline, the margin often very shallowly lobed, always strongly serrated; petioles 0·7–8 cm. long; stipules 4–10 mm. long, ovate-oblong, fimbriate; bulbils sometimes present in leaf-axils.
Morphology Reproductive morphology Flowers
Flowers in terminal and axillary dichasial cymes with 1–2 dichasia; peduncles 2–6 cm. long; primary dichasial branches 1·3–2·5 cm. long. Female flowers: tepals 5, coloured as in the male; outer ones 6–10 mm. long, elliptic or ovate, inner ones narrower; styles divided to 1/2–2/3 their length, the branches spirally twisted; ovary 4·5–9 × 2–5 mm., oblong, 3-winged; placentae entire. Male flowers: tepals 2 + 2, orange or rarely yellow; outer pair 7–12 × 6–10 mm., suborbicular to ovate or elliptic; inner pair narrower; filaments c. 1·5 mm. long.
Morphology Reproductive morphology Inflorescences Bracts
Bracts 4–12 mm. long, obovate, green, pink or brown, persistent and conspicuous.
sex Male
Male flowers: tepals 2 + 2, orange or rarely yellow; outer pair 7–12 × 6–10 mm., suborbicular to ovate or elliptic; inner pair narrower; filaments c. 1·5 mm. long.
sex Female
Female flowers: tepals 5, coloured as in the male; outer ones 6–10 mm. long, elliptic or ovate, inner ones narrower; styles divided to 1/2–2/3 their length, the branches spirally twisted; ovary 4·5–9 × 2–5 mm., oblong, 3-winged; placentae entire.
Morphology Reproductive morphology Fruits
Capsule 6–28 × 3–7 mm. excluding wings, ellipsoid or cylindrical; wings 6–14 mm. wide, subequal, triangular, the upper edge horizontal or at an acute or obtuse angle to the fruit axis; wing sometimes extending beyond capsule above and below.

[FTEA]

Begoniaceae, Vanessa Plana, Martin J.S. Sands & Henk J. Beentje. Flora of Tropical East Africa. 2006

Type
Type: specimen cultivated in UK, York, June 1867, Backhouse s.n. (not found).
Morphology General Habit
Perennial herb 10–50 cm high, epiphytic or terrestrial; tuber depressed-ellipsoid, to 6 cm in diameter, red or orange inside; stem often red, sparsely branched, fleshy, glabrous or sparsely hairy. Stipules pink, asymmetrically ovate-oblong, 3–15 mm long, irregularly ciliate-dentate or fimbriate, acute to acuminate.
Morphology Leaves
Leaves green above, the margin and veins red, reddish beneath, ovate to lanceolate in outline, asymmetric, 2.5–20 cm long, 1.5–14.5 cm wide, one side 1.5–2 times wider than the other and with a basal lobe often 1/4 to 1/6 of the total lamina length, base cordate and very unequal, margin often shallowly lobed, always serrate, apex attenuate, sparsely to densely hairy; venation palmate-pinnate; bulbils sometimes present in leaf-axils; petiole red, 1–10 cm long, with or without a ring of hairs at the junction with the lamina.
Morphology Reproductive morphology Flowers
Flowers in axillary bisexual cymes with 1–2 dichasia; peduncle red, 2–6 cm long; bracts persistent and conspicuous, green or pink, obovate, 2.5–12 mm long, acute; pedicels 7–40 mm long. Male flowers: tepals 4, orange or rarely yellow, the outer suborbicular, ovate or elliptic, 7–18 × 6–15 mm, the inner elliptic to spatulate, 6–15 × 4.5–8(–11) mm; stamens 40–60, filaments 0.5–3 mm long; anthers oblong, 0.7–1.8 mm long. Female flowers: tepals 5, orange or yellow, the outer elliptic or ovate, 6–17 mm long, 5–11 mm wide, the innermost elliptic, to 14.5 × 6.2 mm; ovary ellipsoid, 4.5–9 × 2–5 mm, 3-locular, 3-winged; placentation axile, placentas undivided; styles three, caducous, divided about halfway, the branches twisted, with a continuous undulating stigmatic band.
Morphology Reproductive morphology Fruits
Fruit an ellipsoid or cylindrical capsule, 6–28 mm long, 3–7 mm in diameter excluding the wings; wings subequal, triangular, 6–14 mm wide, sometimes extending distally beyond the capsule; dehiscence along the junction with the wing.
Figures
Fig. 3, p. 16.
Ecology
On tree-trunks or horizontal branches, on wet rock, occasionally terrestrial in moist forest or near streams or waterfalls; 950–2200(–2800) m.
Conservation
Least concern (LC); widespread but uncommon in Flora area.
Note
Irmscher described a considerable number of sub-specific taxa, exhibiting only minor differences. Two subspecies upheld in F.Z. are a good example: subsp. sutherlandii: leaves narrowly ovate, 2.5–7 cm long, the margin coarsely serrate; petiole 0.7–2.5 cm long; and subsp. latior (Irmsch.) Kupicha: leaves oblong, 5–14 cm long, broadest at the middle, the margin finely serrate; petiole 1–8 cm long. There are numerous intermediates, for example with large leaves and coarsely dentate margins, or with small leaves with rather long petioles. Accordingly, for this Flora, a broader approach is taken and B. sutherlandii is seen as a single variable taxon. The type was said by Irmscher to be from South Africa, Natal, without further locality, Dec. 1861, Sutherland s.n. (K, holo.); but the protologue clearly says that the description has been drawn up from a specimen cultivated in UK, York, June 1867, Backhouse s.n. (not found).
Distribution
Range: Congo-Kinshasa, Zambia, Malawi, Mozambique, Zimbabwe, South Africa Flora districts: T4 T6 T7 T8

Native to:

Cape Provinces, Free State, KwaZulu-Natal, Lesotho, Malawi, Mozambique, Northern Provinces, Swaziland, Tanzania, Zambia, Zaïre, Zimbabwe

Begonia sutherlandii Hook.f. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Hepper, F.N. [5387], Tanzania 34362.000
Wilms, F. [1268], South Africa K000242730
Jan 1, 1961 Button [8], South Africa Begonia buttonii K000407086 holotype
Nov 1, 1957 Marais, W. [31] Begonia flava K000242755
Jan 1, 1975 Richards, H.M. [3699], Zimbabwe Begonia sutherlandii subsp. latior K000242753 holotype
Jan 1, 1975 Richards, H.M. [3699], Zimbabwe Begonia sutherlandii subsp. latior K000242754
Jan 1, 1960 Wood, J.M. [1081], South Africa Begonia dissecta K000242729 holotype

First published in Bot. Mag. 94: t. 5689 (1868)

Accepted by

  • Govaerts, R. (1996). World Checklist of Seed Plants 2(1, 2): 1-492. MIM, Deurne.

Literature

Flora of Tropical East Africa

  • Bot. Mag. 94: t. 5689 (1868)
  • Cribb & Leedal, Mountain Fl. S Tanzania: 55, pl. 8b (1982).
  • E.J. 81: 162 (1961)
  • F.C.B., Begoniaceae: 50 (1969)
  • F.Z. 4: 503 (1978)

Art and Illustrations in Digifolia
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Flora Zambesiaca
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Flora of Tropical East Africa
Flora of Tropical East Africa
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Herbarium Catalogue Specimens
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Kew Backbone Distributions
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© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

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