Wajira grahamiana (Wight & Arn.) Thulin & Lavin

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Photo: Ton Rulkens
Pemba Bay, close to Pemba town.

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Synonyms:	Dolichos grahamianus (Wight & Arn.) Niyomdham Dolichos subcarnosus Wight & Arn. Phaseolus grahamianus Wight & Arn. Phaseolus macrorhynchus Harms Phaseolus schimperi Taub. Phaseolus stenocarpus Harms Vigna grahamiana (Wight & Arn.) Verdc. Vigna macrorhyncha (Harms) Milne-Redh. Vigna proboscidella Chiov.
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Description:	Perennial trailing or twining herb, up to 3 m long, from a very thick rootstock. Stem slender, hairless or sparsely pubescent. Leaflets 3, linear-lanceolate to ovate-lanceolate, ovate, oblong or rhombic, 1.5–9 cm long, hairless or very sparsely hairy particularly along the margins; petiole 1–5 cm long; stipules ovate-lanceolate or triangular, 2–3 mm long, persistent. Peduncle 3.5–14 cm long, hairless; rhachis 1.5–12 cm long. Flowers pinkish-mauve, 11–17 mm long; pedicel 2–5 mm long; bracteoles persistent, c. 1.5 mm long, 3-veined. Calyx hairless; tube 2–3 mm long; lobes 2–3 mm long, the lower lobe almost twice as long as lateral lobes, the upper pair united into bifid lip. Standard symmetrical with two central appendages; keel almost symmetrical, with a beak c. 1.5 cm long incurved through almost a full circle. Pod linear, flattened, 8–14 cm long, hairless, raised sutures along the margin; beak straight.
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Derivation of specific name:	grahamiana: named after Robert C. Graham (1786-1845), Scottish physician and botanist.
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Worldwide distribution:	Nigeria, DRC, Burundi, Rwanda, Uganda, Sudan, Ethiopia, Somalia, Kenya, Tanzania, Malawi, Mozambique and Zimbabwe. Also in Saudi Arabia, Sri Lanka and India.
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Spot characters:	Display spot characters for this species
Literature:	Drummond, R.B. (1972). A list of Rhodesian Legumes. Kirkia 8(2) Page 228. As Vigna marcorhyncha Mackinder, B. et al. (2001). Papilionoideae Flora Zambesiaca 3(5) Pages 155 - 156. As Vigna marcorhyncha (Includes a picture). Mapaura, A. & Timberlake, J. (eds) (2004). A checklist of Zimbabwean vascular plants Southern African Botanical Diversity Network Report No. 33 Sabonet, Pretoria and Harare Page 52. As Vigna marcorhyncha Phiri, P.S.M. (2005). A Checklist of Zambian Vascular Plants Southern African Botanical Diversity Network Report No. 32 Page 66. As Vigna macrorhyncha Thulin, M., Lavin, M., Pasquet, R. & Delgado-Salinas, A. (2004). Phylogeny and Biogeography of Wajira (Leguminosae): A Monophyletic Segregate of Vigna Centered in the Horn of Africa Region. Systematic Botany 29(4) Pages 908 - 910.

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Flora of Malawi: Wajira grahamiana
Flora of Mozambique: Wajira grahamiana
Flora of Zambia: Wajira grahamiana
Flora of Zimbabwe: Wajira grahamiana

External websites:

African Plants: A Photo Guide (Senckenberg): Wajira grahamiana
African Plant Database: Wajira grahamiana
BHL (Biodiversity Heritage Library): Wajira grahamiana
EOL (Encyclopedia of Life): Wajira grahamiana
GBIF (Global Biodiversity Information Facility): Wajira grahamiana
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iNaturalist: Wajira grahamiana
IPNI (International Plant Names Index): Wajira grahamiana
JSTOR Plant Science: Wajira grahamiana
Mansfeld World Database of Agricultural and Horticultural Crops: Wajira grahamiana
Plants of the World Online: Wajira grahamiana
Tropicos: Wajira grahamiana
Wikipedia: Wajira grahamiana