1. Family: Fabaceae Lindl.
    1. Afzelia Sm.

      1. This genus is accepted, and its native range is Tropical & S. Africa, Taiwan to Tropical Asia.

    [LOWO]

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

    Vernacular
    tindalo, apa, afzelia, doussie, bolengu, chanfuta, mahogany bean, pod mahogany
    Habit
    Trees
    Ecology
    Tropical lowland rain forest and seasonally dry forest, woodland, bushland and thicket
    Distribution
    7 spp. in Africa (centred in Guineo-Congolian W and WC Africa with 1 sp. each to Sudanian and Zambezian to Somalia-Masai regions); 4 spp. in SE Asia (2 spp. in Indo-China to S China; 2 spp. in Malesia)
    Note
    See taxonomic note under Intsia

    The Detarieae sens. lat. are pantropical in distribution, with c. 58% of the genera confined to Africa (incl. Madagascar), c. 20% to the Neotropics, and c. 12% to tropical Asia. Only Copaifera, Crudia and Cynometra are pantropical (and all possibly non monophyletic) and Afzelia, Guibourtia, Hymenaea, Intsia and Sindora are native to at least two of these regions. The apparent high level of diversity in the African tropics may in part be an artefact of the (relatively) greater taxonomic effort that has been invested in the study of the African taxa. Characteristic of African Detarieae taxonomy has been the splitting off of disparate elements as segregate genera, while this has often not been the case in the Neotropics. Both regions, however, currently contain large paraphyletic assemblages requiring detailed species-level analysis. Eighty-two genera and from (729) – 747 – (765) species are treated here in Detarieae sens. lat. (Fig. 21). Of the 132 (extant) species so far assessed for IUCN red data status, 97 have categories of threat. Of these 73 are assessed as vulnerable, 13 are endangered and 11 are critically endangered.

    The remarkable range and complex patterns of floral modifications found in the Detarieae sens. lat. have proved a considerable challenge to the establishment of widely accepted and clearly circumscribed generic groupings. Based on the work of Léonard (1957) and Cowan & Polhill (1981a & b), ten informal groups of genera were proposed; the Cynometra, Hymenostegia, Hymenaea, Crudia, Detarium and Brownea groups in tribe Detarieae, and the Berlinia, Macrolobium, Amherstia and Brachystegia groups in tribe Amherstieae. Genera with imbricate bracteole aestivation were assigned to Detarieae whilst those with valvate bracteole aestivation were placed in Amherstieae. Polhill (1994) retained these generic groupings with a few additions to accommodate recently described genera, and merged the two tribes into a single broadly defined tribe, Detarieae sens. lat. Breteler (1995) proposed the recognition of two tribes within Detarieae sens. lat., separated according to the relative size and position of the paired bracteoles before anthesis. Essentially, this resulted in the reassignment of Cowan & Polhill’s Amherstia group genera (Amherstia, Tamarindus and Humboldtia) from Amherstieae to Detarieae with the remaining genera forming tribe Macrolobieae. In 1999, Breteler (pers. comm.) proposed a modified Breteler (1995) tribal system in which Macrolobieae was maintained, the circumscription of Detarieae was greatly narrowed and the genera newly excluded from Detarieae were together recognised as Cynometreae sens. strict.

    The first comprehensive studies of phylogenetic relationships in tribe Detarieae sens. lat., were the analyses of Bruneau et al. (2000; 2001), based on nucleotide sequence data from the chloroplast trnL intron. They found that tribes Detarieae and Macrolobieae formed a well supported monophyletic group, which included all genera placed previously in Detarieae sens. lat., except Umtiza. Bruneau et al. (2000) examined 71 genera, with the African taxa most widely sampled. The key results of the analysis were that none of the generic groupings proposed by Cowan and Polhill (1981a & b) and Polhill (1994) were supported as strictly monophyletic, and the majority of the members of tribe Macrolobieae (although not Macrolobium) were placed as a monophyletic group derived within Detarieae sens. lat. These analyses also repeatedly recognised a second group of related genera made up entirely of resin-producing taxa, with the exception of some species of Guibourtia. The resins can be seen as translucent gland dots in the leaflets and (sometimes) other organs. Within the resin producing taxa, the genus Prioria and several members of Cowan & Polhill’s Crudia group were consistently placed together (see taxonomic notes under individual genera in main text). Another subclade within the resin-producing Detarieae comprising six members of Polhill’s Detarium group was repeatedly recognised (Bruneau et al., 2000; 2001; Fougère-Danezan et al., 2003). In addition, in the trnL intron analysis, the five sampled members of Cowan and Polhill’s Brownea group were consistently placed together with Macrolobium, although this grouping was not upheld in a more recent molecular and combined molecular-morphological analysis (Herendeen et al., 2003a). Within the exclusively African Macrolobieae of Bruneau et al. (2001), a well supported subclade of six genera was recognised by Gervais & Bruneau (2002) and as the ‘babjit’ clade sensu Wieringa & Gervais (2003). Bruneau et al. (2000; 2001) confirmed the view of Polhill (1994) that the two tribes Detarieae and Macrolobieae (sensu Breteler, 1995) are best considered a single entity. Evidence from ontogenetic studies by Tucker (2000, 2001, 2002a) challenged the validity of bracteole aestivation as a criterion for subdividing Detarieae sens. lat. and identified a set of character states associated with two modes of floral development (Circular and Omega) whose distribution amongst detarioid genera does not support Polhill’s groups.

    The analyses of Herendeen et al. (2003a) united a morphological dataset with the chloroplast trnL intron dataset of Bruneau et al. (2001). The combined analysis provided mixed results within Detarieae sens. lat. compared with the molecular dataset alone. Near the base of the clade, and within some subclades, greater resolution was provided but as several groups were not well supported, it would be premature to emphasise the details of this greater resolution. Elsewhere the addition of morphological characters produced weaker resolution and a less robust phylogeny due either to conflicting phylogenetic signal or increased homoplasy in the morphological data or both. The order of taxa followed here (Fig. 21) represents a synthesis of the present understanding of putative relationships within this (perhaps most morphologically diverse) tribe in the Leguminosae. Unsampled genera in the combined analysis are inserted into this order where morphological evidence appears to suggest close relationships.

    Whilst significant progress has been made since Polhill (1994), further studies (particularly including the non-African members of the larger and less well understood genera) are needed before a new comprehensive classification of the Detarieae sens. lat., based on a synthesis of all available data, can be established.

    [FZ]

    Leguminosae, R.K. Brummitt, A.C. Chikuni, J.M. Lock & R.M. Polhill. Flora Zambesiaca 3:2. 2007

    Habit
    Trees, evergreen or deciduous, unarmed.
    Leaves
    Leaves paripinnate; leaflets opposite or subopposite, without gland dots, but sometimes with a dot-like gland near the base of the leaflet; petiolules twisted; stipules intrapetiolar, upper parts early caducous.
    Flowers
    Flowers in racemes or panicles, spirally arranged on the inflorescence axis; bracts small, caducous; bracteoles 2, small, caducous.
    Hypanthium
    Hypanthium present, generally elongate.
    Calyx
    Sepals 4, subequal, differentiated into 2 outer and 2 inner, imbricate.
    Corolla
    Corolla of a single large petal, with up to 4 represented as minute rudiments.
    Androecium
    Fertile stamens 7–9, filaments long; anthers dorsifixed, dehiscing by longitudinal slits; 2 staminodes often present.
    Pistil
    Ovary stipitate; ovules usually 10–15; style elongate, filiform; stigma terminal, small.
    Fruits
    Pods oblong or reniform, compressed, with thick woody valves, tardily dehiscent.
    Seeds
    Seeds up to 10, without areole, lying in compartments in a white pithy endocarp, with a yellow or red fleshy aril partially enveloping the seed.
    [FTEA]

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

    Habit
    Unarmed evergreen or sometimes deciduous trees
    Leaves
    Leaves simply and normally paripinnate; stipules with their basal parts connate into a persistent intrapetiolar scale, and with their upper parts free and caducous; petiolules twisted; leaflets opposite or subopposite, without translucent gland-dots, but normally with a small dot-like gland at proximal side of leaflet base either on lower surface in angle between margin and midrib or on margin itself
    Inflorescences
    Inflorescences simply racemose, or of racemes grouped into panicles; flowers spirally arranged along the inflorescence-axes; pedicels jointed at base; bracteoles large, well-developed, concavo-convex, almost completely concealing the young flower-buds, one bracteole overlapping the other by its margins; both bracteoles caducous before the flower opens
    Hypanthium
    Hypanthium ± elongate
    Calyx
    Sepals 4, imbricate, unequal (2 outer, 2 inner)
    Corolla
    Petal 1, large, clawed, the others rudimentary or absent
    Stamens
    Stamens normally 7 fertile and 2 staminodes
    Pistil
    Ovary stipitate, the stipe adnate to the hypanthium; style long; stigma small, ± capitate; ovules many
    Fruits
    Pods dehiscing into 2 thickly woody valves
    Seeds
    Seeds embedded in white pith, large, thick, hard, furnished with a basal brightly coloured aril.
    [LOWO]
    Use
    Various species used as important commercial timbers (afzelia, doussie, pod mahogany, mahogany bean, chanfuta, bolengu, apa, tindalo ) for heavy construction, joinery, frames, staircases, flooring, furniture, implements, boat building and turnery; also used for dyes, charcoal, medicine, cattle fodder, edible seed arils (although the seed of some species are poisonous); the seeds are also used in necklaces, curios and as charms; a number of species are vulnerable or endangered

    Images

    Distribution

    Native to:

    Angola, Benin, Borneo, Botswana, Burkina, Cabinda, Cambodia, Cameroon, Cape Provinces, Caprivi Strip, Central African Repu, Chad, Congo, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, India, Ivory Coast, Jawa, Kenya, KwaZulu-Natal, Laos, Liberia, Malawi, Mali, Mozambique, Myanmar, Namibia, Niger, Nigeria, Northern Provinces, Philippines, Senegal, Sierra Leone, Somalia, Sudan, Sumatera, Swaziland, Tanzania, Thailand, Togo, Uganda, Vietnam, Zambia, Zaïre, Zimbabwe

    Introduced into:

    China South-Central, China Southeast, Hainan

    Afzelia Sm. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    McKey, D.B. [224], Cameroon 38011.000
    Tchiengue, B. [2133], Cameroon 76105.000

    First published in Trans. Linn. Soc. 4: 221 (1798)

    Accepted by

    • Govaerts, R. (1995). World Checklist of Seed Plants 1(1, 2): 1-483, 529. MIM, Deurne.

    Literature

    Flora of West Tropical Africa
    • Léonard in Reinwardtia 1: 61–66 (1950).
    • —F.T.A. 2: 301
    Flora Zambesiaca
    • in Mém. Acad. Roy. Sci. Belg. 30(2): 106 (1957).
    • Léonard in Reinwardtia 1: 61–66 (1950)
    • in Trans. Linn. Soc. 4: 221 (1798) nom. conserv.
    Flora of Tropical East Africa
    • in Mém. 8°, Classe Sci., Acad. Roy. Belg. 30(2): 106 (1957)
    • J. Léon, in Reinwardtia 1: 61–66 (1950)
    • in Trans. Linn. Soc. 4: 221 (1798), nom. conserv.

    Sources

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

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

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © 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 2019. 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

    Legumes of the World Online
    http://creativecommons.org/licenses/by-nc-sa/3.0