Mildbraediodendron Harms

First published in G.W.J.Mildbraed (ed.), Wiss. Erg. Deut. Zentr.-Afr. Exped., Bot. 2: 241 (1911)
This genus is accepted
The native range of this genus is Ghana to Uganda.

Descriptions

Legumes of the World. Edited by G. Lewis, B. Schrire, B. MacKinder & M. Lock. Royal Botanic Gardens, Kew. (2005)

Note

The Swartzieae sens. lat., comprising 17 genera and c. 258 species (Fig. 28), is largely Neotropical and distributed from Mexico to Argentina, and the Caribbean, with Bobgunnia, Cordyla, Mildbraediodendron and Baphiopsis restricted to tropical Africa and Madagascar. Cowan (1981a) included 11 genera in the Swartzieae, then later (Polhill, 1994) transferred four genera from the Sophoreae (Amburana, Ateleia, Cyathostegia and Holocalyx). Bobgunnia (Kirkbride & Wiersema, 1997) and Trischidium (Ireland, submitted) were added subsequently.

The flowers of Swartzieae genera are unusual and varied, and do not totally conform to the typical ‘papilionoid’ structure, resulting in much debate over the systematic placement of the tribe. Disparities with the rest of the family, of some but not all Swartzieae taxa, include a closed calyx in bud, non-papilionaceous corollas (often with a single petal, or these lacking altogether due to complete loss of some petal primordia) and polystemony (often numerous stamens resulting from an innovative developmental feature, the ring meristem) (Tucker, 2003). Although now generally accepted to be papilionoid, the tribe has frequently been shifted between the Papilionoideae and the Caesalpinioideae, and is even recognised by some as a fourth subfamily (De Candolle, 1825; Bartling, 1830; Endlicher, 1840; Corner, 1951).

Research based on pollen (Ferguson & Schrire, 1994), macromorphology (Herendeen, 1995), wood anatomy (Gasson, 1996) and DNA sequences (Doyle et al., 1996; Ireland et al., 2000; Pennington et al., 2001) has shown the Swartzieae to be polyphyletic, with many members of the tribe more closely related to genera in the Sophoreae, Dipterygeae and Dalbergieae than they are to each other (Fig. 28). In a phylogenetic analysis of DNA sequence data (Ireland et al., 2000; Pennington et al., 2001), Swartzia emerges in a monophyletic group with Bobgunnia, Bocoa, Trischidium, Cyathostegia and Ateleia. This group of genera, with the addition of Candolleodendron, are likely to constitute a redefined Swartzieae sens. strict., with the remaining swartzioid genera being moved to other tribes (Fig. 28). Wojciechowski et al. (2004) find moderate support for including Swartzieae sens. strict. in a monophyletic clade together with basally branching genera lacking the 50kb inversion in Sophoreae, and Dipterygeae.

 The reclassification of Swartzieae sens. strict., and realignment of the remaining swartzioid genera in other tribes, needs to be corroborated by further evidence. For the present, Swartzieae sens. lat. is retained in a basally branching position within the Papilionoideae following Polhill (1981a).

[Author’s postscript: Mansano et al. (2004a) recently undertook a molecular-morphological analysis of the Lecointea clade of Herendeen (1995) and found strong support for the inclusion of Harleyodendron and Exostyles within this clade, rather than in the Vataireoid clade as reported here]

" Closely related to Cordyla and Aldina (Pennington et al., 2001)
Habit
Tree
Ecology
Tropical rain forest and seasonally dry forest
Distribution
WC Africa (Guineo-Congolian and Lake Victoria regions)
[LOWO]

Leguminosae, J. B. Gillett, R. M. Polhill & B. Verdcourt. Flora of Tropical East Africa. 1971

Morphology General Habit
Unarmed tree
Morphology Leaves
Leaves alternate, imparipinnate; stipules small, soon falling off; leaflets petiolulate, all alternate, or in one and the same leaf the upper opposite and the lower alternate, with numerous pellucid dots
Morphology Reproductive morphology Flowers
Flowers hermaphrodite or ♂, in lateral racemes which are simple or occasionally forked below; each flower subtended by linear quickly falling bracteoles
Morphology Reproductive morphology Flowers Calyx
Calyx subglobose and entire before dehiscence, splitting into 3 (or 2, fide Harms) lobes on opening
Morphology Reproductive morphology Flowers Corolla
Petals 0
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 12–18, arranged in a single row round the well-marked margin of the conspicuous flattened disc; filaments slightly connate at base; anthers dorsifixed, dehiscing by longitudinal slits; connective not glandular
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary long-stipitate, several-ovuled, tapering into a subulate style; stigma very small
Morphology Reproductive morphology Fruits
Fruits green, stipitate, spherical, apparently not or scarcely oblique, indehiscent, with 1–3 seeds embedded in pulp
Morphology Reproductive morphology Seeds
Seeds large, apparently not areolate, not arillate, without endosperm; radicle of embryo straight.
[FTEA]

Uses

Use
Mildbraediodendron excelsum Harms (muyati) is used for timber and as wildlife-food (especially elephants)
[LOWO]

Sources

  • Flora of Tropical East Africa

    • Flora of Tropical East Africa
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Herbarium Catalogue Specimens

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
  • Legumes of the World Online

    • http://creativecommons.org/licenses/by-nc-sa/3.0