1. Family: Fabaceae Lindl.
    1. Dalbergiella Baker f.

      1. This genus is accepted, and its native range is Tropical Africa.

    [LOWO]

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

    Habit
    Trees or scandent shrubs
    Ecology
    Tropical rain forest and seasonally dry forest (often riverine), woodland and bushland, often associated with rocky outcrops
    Distribution
    2 spp. in WC Africa (Guineo-Congolian region); 1 sp. in SE Zambezian region
    Note
    Placed by Hu et al. (2000) among a basal millettioid and phaseoloid group of genera

    Relationships among genera of Millettieae have been notoriously difficult to unravel based on traditional morphological evidence and this is exemplified by the alphabetical arrangement of genera in the tribal treatments of Geesink (1981; 1984) and Polhill (1994). Geesink (1981) recognised 44 genera and c. 870 species in tribe Millettieae (as ‘Tephrosieae’) while 43 genera were accounted for in Geesink (1984) and Polhill (1994). The genera recognised, however, varied considerably with only 33 genera in common to both treatments of Geesink, while the list of Polhill (1994) combined elements of Geesink (1981, 1984) with new data accumulated since then. Tephrosia has traditionally comprised some 400 species but this is re-estimated at c. 350 species here.

    The traditional circumscription of the predominantly pantropical and subtropical tribe Millettieae is followed here (Fig. 45), with 45 genera and (904)–909–(914) species being recognised, (i.e. excluding the two genera and 11 species transferred to Brongniartieae, see Table 8), although the concept of what comprises Millettieae sens. strict. is changing rapidly based on evidence from molecular phylogenies. Sequence data for millettioid genera comes from the plastid rbcL gene (Doyle et al., 1997; 2000; Kajita et al., 2001; Hu & Chang, 2003), phytochrome nucleotide genes (Lavin et al., 1998), the plastid trnK-matK region (Hu et al., 2000) and the nuclear ITS region (Hu, 2000; Hu et al., 2002). Molecular data, together with reinterpreted evidence based on chemistry (Evans et al., 1985) and wood anatomy (Gasson et al., 2004), have been the basis for recognising a number of informal suprageneric groupings and for transferring Cyclolobium and Poecilanthe to tribe Brongniartieae (Table 8; Fig. 45).

     The most far-reaching result of the above molecular analyses was that a substantial part of the traditionally circumscribed tribe Phaseoleae is more closely allied to the core-Millettieae than to the Phaseoleae sens. lat. clade (see page 393). Circumscription of a revised tribe Millettieae is not possible at present until genera are more comprehensively sampled; however, a Millettioid sens. strict. group might be expected to include some genera in the basal millettioid and phaseoloid group, Phaseoleae subtribes Diocleinae, Ophrestiinae and in small part the Erythrininae, tribe Abreae and the core-Millettieae (Fig. 45). The basal millettioid and phaseoloid group comprises 17 genera (94 species) that may belong either in the Millettioids sens. strict. or Phaseoleae sens. lat., or to a clade sister to both these groups (e.g., Kajita et al., 2001). The core-Millettieae clade comprises c. 22 genera and c. 777 spp., with some additional generic segregates being necessary within the ‘canavanine group’ (Evans et al., 1985), to accommodate species of Millettia sens. lat. and Fordia sens. lat., which on the basis of molecular and chemical evidence are excluded from Millettia and Fordia sens. strict.

    Relationships between the major groups of genera centred on Lonchocarpus, Derris, Millettia and Tephrosia remain obscure, and still reflect a geographical bias in segregating them, i.e. distributions are limited largely to the New World in the Lonchocarpus group, and the Old World in the other groups. The suggestion that the Andean South American genus Apurimacia might be sister to the largely Old World Tephrosia rather than to Lonchocarpus (e.g., Kajita et al., 2001) is possibly indicative of other Old World–New World sister groups yet to be found. Further molecular evidence will probably result in an overall reduction in the number of genera recognised, particularly in the Tephrosia and Lonchocarpus groups where various small or monotypic ‘one-organ’ genera may be better placed within larger genera. Ptycholobium, Requienia and Paratephrosia, for example, are difficult to distinguish from Tephrosia, but for the emphasis traditionally placed on their atypical pods.

    [FTEA]

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

    Habit
    Trees or scandent shrubs
    Leaves
    Leaves alternate, imparipinnate; stipules subulate; stipels absent; leaflets mostly subopposite, unequal-sided at base
    Inflorescences
    Inflorescences in axils of current or fallen leaves, sometimes precocious, contracted subracemose panicles; bracts narrow; bracteoles small
    Calyx
    Calyx with 2 broad upper lobes joined nearly to tips and 3 smaller triangular or deltoid lower lobes
    Corolla
    Corolla cream or yellowish with standard at least marked purplish or reddish; standard with well-developed claw supporting a broad blade emarginate at both ends, longer than other petals; wings free; keel-petals little shorter than wings, only slightly curved, shortly adherent on lower side
    Stamens
    Vexillary stamen free; anthers dorsifixed, with a broadened connective, the thecae thus turned forwards with longitudinal slits down the face
    Pistil
    Ovary subsessile, with no more than about 8 ovules; style curved at base and tapering to a small stigma
    Fruits
    Fruit subsessile, indehiscent, flattened and thin, ± oblong, laxly venose, 1(–2)-seeded
    Seeds
    Seeds reniform, smooth; hilum and rim-aril small.
    [FZ]

    Flora Zambesiaca Leguminosae subfamily Papillionoideae by J.M. Lock*

    Habit
    Trees or (not in the Flora area) lianes. Trees or (not in the Flora area) lianes.
    Leaves
    Leaves imparipinnate; leaflets opposite, subopposite or occasionally alternate, without stipels. Leaves imparipinnate; leaflets opposite, subopposite or occasionally alternate, without stipels.
    Inflorescences
    Inflorescence a contracted racemose panicle, with flowers in clusters along the axes (pseudoracemes). Inflorescence a contracted racemose panicle, with flowers in clusters along the axes (pseudoracemes).
    Calyx
    Calyx campanulate, 5-dentate, upper teeth broader than the others. Calyx campanulate, 5-dentate, upper teeth broader than the others.
    Corolla
    Standard suborbicular, dorsally keeled towards the base; wings oblong; keel petals shorter than the wings. Standard suborbicular, dorsally keeled towards the base; wings oblong; keel petals shorter than the wings.
    Stamens
    Stamens 10, 9 connate in a dorsally slit sheath, the upper one free; anthers dorsifixed, with a subcircular connective. Stamens 10, 9 connate in a dorsally slit sheath, the upper one free; anthers dorsifixed, with a subcircular connective.
    Ovary
    Ovary few-ovulate, sessile. Ovary few-ovulate, sessile.
    Fruits
    Pod 1-seeded. Pod 1-seeded.
    Seeds
    Seed compressed; radicle inflexed. Seed compressed; radicle inflexed.
    [LOWO]
    Use
    Used as timber, medicine, ornamentals

    Images

    Distribution

    Native to:

    Angola, Benin, Cabinda, Cameroon, Central African Repu, Equatorial Guinea, Gabon, Ghana, Guinea, Ivory Coast, Liberia, Malawi, Mozambique, Nigeria, Sierra Leone, Tanzania, Togo, Zambia, Zaïre, Zimbabwe

    Dalbergiella Baker f. appears in other Kew resources:

    First published in J. Bot. 66(Suppl. 1): 127 (1928)

    Accepted by

    • Govaerts, R. (2000). World Checklist of Seed Plants Database in ACCESS D: 1-30141.

    Literature

    Flora of West Tropical Africa
    • in J. Bot. 66, suppl. 1: 128, t. A.–J. (1928).
    Flora Zambesiaca
    • Baker f., Legum. Trop. Africa: 534 (1929).
    • Legum. Trop. Africa: 534 (1929).
    • in J. Bot. 66: 127 (1928)
    Flora of Tropical East Africa
    • L.T.A.: 534 (1929)
    • in J.B. 66, Suppl. Polypet.: 127 (1928)

    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

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2018. 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 2018. 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