1. Family: Fabaceae Lindl.
    1. Robynsiophyton R.Wilczek

      1. This genus is accepted, and is native to Africa..

    [FZ]

    Leguminosae, various authors. Flora Zambesiaca 3:7. 2003

    Habit
    Annual or short-lived perennial.
    Leaves
    Leaves mostly digitately 3-foliolate, some upper ones 1-foliolate; stipules paired, narrow.
    Flowers
    Flowers small, few in terminal and axillary heads; bracteoles absent.
    Calyx
    Calyx subequally lobed, the upper lobes narrow.
    Corolla
    Standard yellow, not exceeding the calyx, narrow; keel ± as long as the wings, narrow, obtuse.
    Stamens
    Stamens 9, all joined in a sheath open on the upper side, 4 sterile, the others with small rounded dorsifixed anthers.
    Style
    Style straight.
    Fruits
    Pod membranous, sessile, flattened oblong-ovate, narrowed to a straight stylar beak, dehiscent, rather few-seeded.
    Seeds
    Seeds oblique-cordiform, small.
    [LOWO]

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

    Habit
    Herb
    Ecology
    Seasonally dry tropical grassland and deciduous woodland
    Distribution
    SC Africa (Angola, Zambia and Congo [Kinshasa])
    Note
    Closely related to Rothia but the flower has nine stamens of which only five are fertile

    The current state of knowledge of the Crotalarieae was reviewed by Van Wyk (1991a) and by Van Wyk & Schutte (1995a). The most conspicuous recent change has been the exclusion of the Argyrolobium group (six genera, i.e. Argyrolobium, Dichilus, Melolobium, Polhillia, Anarthrophyllum and Sellocharis), which belong in tribe Genisteae rather than in Crotalarieae, where they were previously placed (Polhill, 1981q: 399 –402). New insights into relationships within the tribe have come mainly from chemosystematic studies of alkaloids (summarised in Van Wyk & Verdoorn, 1990) and several recent generic monographs (see below).

    The Crotalarieae forms part of a monophyletic clade, the ‘core genistoids’ (Fig. 36) which also includes Genisteae, Podalyrieae, Thermopsideae, Brongniartieae, Euchresteae and Sophoreae sens. strict. (Crisp et al., 2000; Pennington et al., 2000a; Kajita et al., 2001). Crotalarieae appears to be sister to the Genisteae and both are sister to the Podalyrieae (Crisp et al., 2000; Wojciechowski et al., 2004). This clade is in turn sister to the Thermopsideae and Sophoreae sens. strict. (including Euchresteae).

    The Crotalarieae shares with the Podalyrieae the absence of a-pyridone alkaloids such as cytisine and anagyrine that are a typical feature of all other ‘core genistoid’ tribes. Despite a lack of defining characters, the monophyly of the tribe as circumscribed here is well supported by molecular evidence (Crisp et al., 2000; Wink & Mohamed, 2003) and by cladistic analyses of morphological, cytological and chemical characters (Van Wyk & Schutte, 1995a). The latter study suggested an early diversification of the genera with uniform anthers and lupanine-type esters of quinolizidine alkaloids (Pearsonia, Rothia and Robynsiophyton) followed by the poorly known Spartidium and then the so-called ‘Cape group of genera’ (Polhill, 1981q: 399–402), which now includes Lotononis and Crotalaria. Relationships between the seven genera of the ‘Cape group’ remains unresolved despite several recent molecular studies because sampling is still relatively poor. However, a basally branching position in the tribe of the ‘Cape group’, notably Lebeckia and Wiborgia — as considered by Polhill (1976, 1981q) — is now accepted here. The exclusion of the Argyrolobium group, based on morphological and chemical characters, is also strongly supported by DNA sequence data. Due to reticulate and overlapping patterns of character state distribution in the Crotalarieae sens. strict., generic delimitations are intricate and subject to misinterpretation. Several of the large and diverse genera appear to be either monophyletic or paraphyletic depending on the choice of characters. As currently circumscribed the tribe includes 11 genera and c. 1204 species (Fig. 37).

    Images

    Distribution

    Native to:

    Angola, Congo, Zambia, Zaïre

    Robynsiophyton R.Wilczek appears in other Kew resources:

    First published in Bull. Jard. Bot. État Bruxelles 23: 126 (1953)

    Literature

    Flora Zambesiaca
    • Polhill in Bot. Syst. 1: 326 (1976).
    • in Bull. Jard. Bot. État 23: 128, t. 1 (1953)
    • in F.C.B. 4: 286, t. 17 (1953).

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    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