1. Family: Fabaceae Lindl.
    1. Genus: Crotalaria L.
      1. Crotalaria namuliensis Polhill & T.Harris

        This species is accepted, and its native range is Mozambique.

    [KBu]

    Harris, T., Darbyshire, I. & Polhill, R. Kew Bull (2011) 66: 241. https://doi.org/10.1007/s12225-011-9277-9

    Habit
    Erect, well to sparsely branched annual or short-lived perennial, branching from a single stem, 10 – 50 cm tall Legume sessile, obliquely inserted, shortly cylindrical, 6 – 7 × 3.5 – 4.5 mm, adpressed pubescent
    Stem
    Stems adpressed pubescent, branches with very dense short stiff hairs c. 0.3 mm long
    Stipules
    Stipules absent
    Leaves
    Leaves 3-foliolate; leaflets oblanceolate, 3 – 10 × 1.5 – 4 mm, apex truncate with an acumen, very sparsely fine pubescent above, densely adpressed pubescent beneath with short stiff hairs; petiole 2 – 5.5 mm long
    Inflorescences
    Racemes dense, terminal, 10 – 17 mm long, 3 – 10-flowered without many flowers developing in the axils below; bracts linear, 1 – 2 mm long, abaxially densely pubescent; pedicels 3 – 4.5 mm long, ascending; bracteoles on pedicel, filiform, c. 1 mm long, abaxially densely pubescent
    Calyx
    Calyx 3.5 – 4.5 mm long, adpressed pubescent; upper lobes attenuately triangular, 2 – 2.5 times as long as the tube
    Corolla
    Corolla: standard elliptic, 6 – 7.5 × 5.5 – 6.5 mm, inner face yellow occasionally marked with a red crescent, outer face red, pubescent on upper part of midvein and densely so near apex, base rounded with claw 0.3 – 1 mm long; wings nearly oblong, slightly broadened upwards, c. 2 mm wide, 4.5 – 7 mm long, base asymmetrical with claw 1 – 1.3 mm long; keel angular and slightly twisted at apex, 7 – 9 mm long, base asymmetrically rounded with claw 0.5 – 1 mm long
    Stamens
    Stamens: filaments bearing longer anthers fused for 2 – 2.5 mm, free parts 4 – 4.5 mm long, filaments bearing shorter anthers fused for 1.25 – 1.5 mm, free parts 0.9 – 1.7 mm long
    Ovary
    Ovary c. 2.5 mm long, pubescent outside, glabrous inside, c. 10-ovulate, style geniculate, the distal part c. 4.5 mm long, hairy along both sides
    Seeds
    Seeds ± 10 per legume, c. 1.5 mm long, without an aril.
    Ecology
    Only known from these four collections all from montane grassland above 1800 m on Mt Namuli. Potentially on comparable mountains in northern Mozambique.
    Conservation
    This species is preliminarily assessed as Critically Endangered (CR B1b(iii) + B2ab(iii)) as it is currently only known from one location and the current known Extent of Occurrence is 1.25 km2. There is a potential threat to the extent of grassland habitat as a result of expansion of cattle grazing on the Muretha plateau, Mt Namuli. This assessment may need to be downgraded if collections are made from new localities.
    Note
    Crotalaria namuliensis is easily recognised as a member of sect. Dispermae Wight & Arn. on account of the keel with a twisted beak, the small pods and lack of stipules. C. namuliensis is distinguished from C. argyrolobioides Baker by its smaller flowers (keel 7 – 9 mm vs 9 – 12 mm) and smaller pods (width 3.5 – 4.5 vs 5 – 5.5 mm), and by its more compact inflorescences. When material of this entity was first examined in the Herbarium at Kew, it was almost immediately evident that it represented an interesting new species. It is certainly closely related to C. argyrolobioides, which is quite widely distributed on high ground along the Western Rift from the Marungu Mts to Mt Mulanje. The several specimens from the montane grassland of Namuli represent a uniform facies that is quite distinct from other species in the cluster around C. argyrolobioides. As explained in the account of that species in Polhill (1982: 312 – 313), C. argyrolobioides is rather variable, so that its close and more uniform allies are a little difficult to distinguish precisely. C. argyrolobioides extends down from high ground along rivers into areas of Brachystegia woodland and diversifies considerably. When we came to write up C. namuliensis for this paper it was a little disappointing that the technical characters we offer to define the entity are not quite as convincing as might be desired. However there is no clinal variation or signs of intergradation between the highland populations of C. argyrolobioides on Mulanje and C. namuliensis on Mt Namuli that would suggest ranking at subspecific level or less.

    Images

    Distribution

    Native to:

    Mozambique

    Crotalaria namuliensis Polhill & T.Harris appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Patel, I.H. [7359], Mozambique K000858606 holotype

    First published in Kew Bull. 66: 242 (2011)

    Literature

    Kew Bulletin
    • Darbyshire, I. (2009). Taxonomic notes and novelties in the genus Isoglossa (Acanthaceae) from East Africa. Kew Bull. 64: 401 – 427.CrossRefGoogle Scholar
    • Timberlake, J. R., Dowsett-Lemaire, F., Bayliss, J., Alves, T., Baena, S., Bento, C., Cook, K., Francisco, J., Harris, T., Smith, P. & de Sousa, C. (2009). Mt Namuli, Mozambique: Biodiversity and Conservation. Report Produced under the Darwin Initiative Award 15/036. Royal Botanic Gardens, Kew.Google Scholar
    • Poriazis, D. I. & Balkwill, K. (2008). Developmental variation in a species of Isoglossa (Acanthaceae: Ruellioideae) over a season. Bothalia 38: 131 – 140.Google Scholar
    • Timberlake, J. R., Bayliss, J., Alves, T., Baena, S., Francisco, J., Harris, T. & da Sousa, C. (2007). The Biodiversity and Conservation of Mount Chiperone, Mozambique. Report Produced under the Darwin Initiative Award 15/036. Royal Botanic Gardens, Kew.Google Scholar
    • Strugnell, A. M. (2006). A checklist of the spermatophytes of Mount Mulanje, Malawi. Scripta Bot. Belg. 34.Google Scholar
    • IUCN (2001). IUCN Red List Categories and Criteria: Version 3.1. IUCN Species Survival Commission. IUCN, Gland, Switzerland & Cambridge, UK.Google Scholar
    • Polhill, R. M. & Wiens, D. (1998). Mistletoes of Africa. Royal Botanic Gardens, Kew.Google Scholar
    • Vollesen, K. (1991). A revision of the African genus Sclerochiton (Acanthaceae: Acantheae). Kew Bull. 46: 1 – 50.CrossRefGoogle Scholar
    • Polhill, R. M. (1982). Crotalaria in Africa and Madagascar. A. A. Balkema, Rotterdam.Google Scholar
    • van Steenis, C. G. G. J. (1978). Gregarious flowering in the monocarpic genus Isoglossa (Acanthaceae). Bothalia 12: 553.Google Scholar
    • Tweedie, E. M. (1965). Periodic flowering of some Acanthaceae on Mt Elgon. J. E. Africa Nat. Hist. Soc. Natl. Mus. 25: 92 – 94.Google Scholar
    • Schrire, B. (in press). Indigofera. In: J. R. Timberlake, Flora Zambesiaca Vol. 3 part 4. Royal Botanic Gardens, Kew for Flora Zambesiaca Managing Committee.Google Scholar

    Sources

    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.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

    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 Bulletin
    Kew Bulletin
    http://creativecommons.org/licenses/by-nc-sa/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