Skip to main content
This species is accepted, and its native range is SE. Guinea to SW. Mali.

[KBu]

Fischer, E., Darbyshire, I. & Cheek, M. Kew Bull (2011) 66: 441. https://doi.org/10.1007/s12225-011-9296-6

Conservation
Striga magnibracteata is here assessed as Endangered (EN B2a,b(iii)) using the criteria of IUCN (2001) since it is only known from three sites with an area of occupancy of 12 km² (using 4 km² grid cells). No threats are known to the site in Mali, but the two sites in Guinée fall along the northern part of the Simandou range, the site of a planned open cast iron-ore mine for Beny Steinmetz Group Resources (BSGR) (http://www.mineweb.co.za/mineweb/view/mineweb/en/page72068?oid=86677&sn=Detail accessed 17 August 2009). While neither of the localities concerned are on the deposit itself, they would be at risk from infrastructure associated with the mine, such as access roads and waste dumps. It is possible that Striga magnibracteata is more common than the initial data suggests; it is to be hoped that future survey work will uncover further, unthreatened sites for this species.
Distribution
SE Guinée and SW Mali.
Ecology
Occurring in wooded grassland (savanna) at 390 – 890 m alt. In Guinée, it was recorded from open Lophira lanceolataTiegh., Hymenocardia acida Tul. and Terminalia sp. wooded grassland with scattered tall Hyparrhenia, and in more dense Hyparrhenia thickets. In Mali, it was recorded from Isoberlinia doka Craib & Stapf, Parinaricura tellifolia Benth., Daniellia sp., Lophira lanceolata, Gardenia ternifolia Schum. & Thonn. and Afrormosia sp. wooded grassland with Andropogon gayanus Kunth. These habitats are rather typical of the “Guinean savanna” which extends in a belt all the way from Senegal in the west to Sudan and NW Uganda in the east. It is unusual, though not unique, to find such a localised species within this habitat. An investigation of the specific ecological requirements of Striga magnibracteata, including host specifity, may help to shed light upon why this species is so restricted.
Morphology General Habit
Annual herb, 30 – 55 cm tall; stems, leaves and bracts densely pubescent with curved hairs bearing a broad shield-like base and interspersed slender multicellular hairs with a minute gland-tip
Morphology Leaves
Leaves opposite to alternate, sessile, upper leaves 30 – 45 × 9 – 17 mm, lower leaves 30 – 35 × 8 – 15 mm, with midrib and two lateral veins
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 4, didynamous, inserted in upper tube just below throat; filaments of longer pair of stamens 1 – 1.5 mm long; anthers 0.5 – 0.65 mm long
Morphology Reproductive morphology Flowers Calyx
Calyx 10-ribbed, 8 – 9 mm long; teeth linear, acute, 2 – 3 mm long
Morphology Reproductive morphology Flowers Corolla
Corolla white to pale pink, 13 – 14.5 mm long; tube 8 – 11 mm long, narrow, bent and expanded towards apex; upper lip shallowly bilobed, ± 2 mm long, slightly recurved; lower lip tripartite, spreading, lobes 2.5 – 3 × 1 – 1.5 mm
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary 3 – 4 mm long; style up to 6 mm long
Morphology Reproductive morphology Fruits
Capsule ovate, up to 4 – 5 × 3 mm, shorter than calyx.
Morphology Reproductive morphology Inflorescences
Inflorescence a dense, quadrangular spike with imbricate and opposite to subopposite flowers; bracts large and conspicuous, lower bracts 22 – 27 × 6 – 8 mm, upper bracts 15 – 17 × 3 – 5 mm; bracteoles 8 – 9 mm long, as long or slightly longer than calyx
Morphology Stem
Stems erect, quadrangular, simple or sparsely branched

Native to:

Guinea, Mali

Striga magnibracteata Eb.Fisch. & I.Darbysh. appears in other Kew resources:

First published in Kew Bull. 66: 443 (2011 publ. 2012)

Accepted by

  • Govaerts, R., Nic Lughadha, E., Black, N., Turner, R. & Paton, A. (2021). The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. https://doi.org/10.1038/s41597-021-00997-6 Scientific Data 8: 215.

Literature

Kew Bulletin

  • Bennett, J. R. & Mathews, S. (2006). Phylogeny of the parasitic plant family Orobanchaceae inferred from phytochrome A. Amer. J. Bot. 93: 1039 – 1051.CrossRefGoogle Scholar
  • Bremer, B., Bremer, K., Chase, M. W., Fay, M. F., Reveal, J. L., Soltis, D. E., Soltis, P. S., Stevens, P. F., Anderberg, A. A., Moore, M. J., Olmstead, R. G., Rudall, P. J., Sytsma, K. J., Tank, D. C., Wurdack, K., Xiang, J. Q. Y. & Zmarzty, S. (2009). An update on the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III. Bot. J. Linn. Soc. 161: 105 – 121.CrossRefGoogle Scholar
  • Ghazanfar, S. A., Hepper, F. N. & Philcox, D. (2008). Scrophulariaceae. In: H. J. Beentje & S. A. Ghazanfar (eds), Flora of Tropical East Africa. Royal Botanic Gardens, Kew.
  • IUCN (2001). IUCN Red List Categories and Criteria. Version 3.1. IUCN Species Survival Commission, IUCN, Gland, Switzerland and Cambridge, UK.
  • Lisowski, S. (2009). Flore (Angiospermes) de la Republique de Guinee. Premiere partie (texte). Scripta Bot. Belg. 41.
  • Mohamed, K. I., Musselman, L. J. & Riches, C. R. (2001). The genus Striga (Scrophulariaceae) in Africa. Ann. Missouri Bot. Gard. 88: 60 – 103.CrossRefGoogle Scholar
  • Neumann, U., Paré, J., Raynal-Roques, A., Sallé, G. & Weber, H. (1996). Characteristic trichomes observed in some African parasitic Scrophulariaceae. In: M. T. Moreno & J. I. Cubero (eds), Advances in Parasitic Plant Research: 264 – 272. Junta de Andalucía, Córdoba.
  • Raynal-Roques, A. (1987). The genus Striga (Scrophulariaceae) in western and central Africa — a survey. In: H. C. Weber & W. Forstreuter (eds), Proceedings of the Fourth International Symposium on Parasitic Flowering Plants: 675 – 689. ISPPEP, Marburg.

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. 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 2021. 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