Family:
Fabaceae Lindl.
Genus:
Indigofera L.

Indigofera volkensii Taub.

This species is accepted, and its native range is W. Tropical Africa to Eritrea and Tanzania, Arabian Peninsula.

[FSOM]

M. Thulin et al. Flora of Somalia, Vol. 1-4 [updated 2008] https://plants.jstor.org/collection/FLOS

Morphology General Habit
Perennial, up to 40 cm tall
Morphology General Indumentum
Stems, leaf-rhachides and inflorescences ± densely strigose, the hairs often spreading at the tips
Morphology Leaves
Leaf-rhachis up to 30 mm long including a petiole of 1–7 mm
Morphology Leaves Leaflets
Leaflets 2–7, alternate, lanceolate-oblong, the terminal largest, up to 45 x 18 mm, strigose on both sides
Morphology Leaves Stipules
Stipules narrow, hardly scarious, without a glabrescent margin
Morphology Reproductive morphology Inflorescences
Racemes up to 7(–15) cm long including the peduncle
Morphology Reproductive morphology Flowers Calyx
Calyx 3.5–6 mm long, divided almost to the base into setaceous lobes
Morphology Reproductive morphology Flowers Corolla
Standard pubescent outside
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 3.5–5 mm long
Morphology Reproductive morphology Fruits
Pod up to 15 x 2 mm, straight, deflexed, 5–8-seeded.
Distribution
N1–3; C1, 2; S1, 2; Eritrea, Ethiopia, Sudan, Uganda, Kenya, Tanzania
Ecology
Altitude range 0–1800 m.
Vernacular
Geed-xajiin, nagaro (Somali).
Note
I. volkensii is very variable, particularly in number and size of leaflets, indumentum and flower size. It is taken here in a broad sense, including also I. sesquijuga and I. viridiflora which have, up to now, been regarded as distinct species. The related and widespread I. spicata Forssk., with stipules with a broad scarious base and glabrescent at the margin, almost certainly occurs in Somalia but has not yet been recorded.

[ILDIS]

International Legume Database and Information Service

Conservation
Not Threatened
Ecology
Africa: Somalia-Masai bushland and thicket, Somalia-Masai grasslands, Somalia-Masai anthropic landscapes
Morphology General Habit
Annual/Perennial, Not climbing, Herb

[FTEA]

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

Morphology General Habit
Branching herb up to 40 cm. tall from a perennial rootstock; stems, inflorescences, stipules and leaf-rhachides ± densely strigose or pilose, the hairs often spreading at the tips.
Morphology Leaves
Stipules rather scarious at the broad base, tapering to a setaceous tip, up to 8 mm. long; rhachis up to 25 mm. long, including a petiole of 1–5 mm., produced up to 5 mm. beyond lateral leaflets; leaflets 3–7, alternate, lanceolate-oblong, the terminal much larger than the lateral, up to 45 mm. long and 15 mm. wide, strigose on both surfaces.
Morphology Reproductive morphology Inflorescences
Racemes diffusely strigose, up to 7 cm. long, including a peduncle of 1–2.5 cm.; bracts lanceolate, up to 4 mm. long, diffusely strigose, caducous; pedicels ± 1 mm. long, reflexed after flowering.
Morphology Reproductive morphology Flowers Calyx
Calyx strigose, 4–6 mm. long, divided almost to the base into setaceous lobes, the lower much longer than the upper.
Morphology Reproductive morphology Flowers Corolla
Corolla strigose-pubescent outside, very caducous.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 4–5 mm. long.
Morphology Reproductive morphology Fruits
Pod straight, rather tetragonal, up to 15 mm. long, ± 2 mm. wide, 5–8-seeded.
Figures
Fig. 46/1–16, p. 316.
Habitat
Acacia, Commiphora bushland, scattered tree grassland and as a weed in cultivated areas; 200–2200 m.; rainfall 250–1000 mm.
Distribution
SE. Sudan, S. Ethiopia K1 K2 K3 K4 K6 K7 T1 T2 T3 T5 T6 U1

[FTEA]

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

Morphology General Habit
Annual or short-lived perennial procumbent herb.
Morphology General Indumentum
Indumentum of white biramous hairs rather dense and nearly always appressed on stems and leaves, somewhat spreading on inflorescence, calyx and fruit.
Morphology Leaves
Stipules narrowly linear-lanceolate, subfalcate; leaf-rhachis up to 15 mm. long, including a petiole of up to 7 mm.; leaflets 2–4, broadly elliptic, obtuse, the terminal one larger than the lateral and up to 20 mm. long and 15 mm. wide, the hairs on the upper surface more slender than those beneath.
Morphology Reproductive morphology Inflorescences
Raceme up to 9 cm. long including a peduncle up to 3.5 cm. long; flowers numerous; pedicels ± 1 mm. long in fruit.
Morphology Reproductive morphology Flowers Calyx
Calyx pilose, deeply divided, about as long as the 3.5 mm. long stamens.
Morphology Reproductive morphology Fruits
Pod straight, ± 12 mm. long and 2 mm. wide, 6–7-seeded; endocarp with pale spots in 4 longitudinal bands.
Morphology Reproductive morphology Seeds
Seeds cuboid, orange.
Habitat
Semi-desert grassland at edge of riverine forest; 780 m.
Distribution
K2

[ILDIS]

International Legume Database and Information Service

Conservation
Not Threatened
Ecology
Africa: Somalia-Masai grasslands
Morphology General Habit
Annual/Perennial, Not climbing, Herb

Native to:

Benin, Burundi, Cameroon, Central African Repu, Djibouti, Eritrea, Ethiopia, Ivory Coast, Kenya, Mali, Oman, Saudi Arabia, Somalia, Sudan, Tanzania, Uganda, Yemen

Indigofera volkensii Taub. appears in other Kew resources:

Date Reference Identified As Barcode Type Status Has image?
Volkens, G. [1738], Tanzania K000392955 isotype Yes
James [s.n.], Somalia Indigofera phillipsiae K000392793 Unknown type material Yes
Schweinfurth, G. [247] Indigofera insularis K000392794 isotype Yes

First published in H.G.A.Engler (ed.), Pflanzenw. Ost-Afrikas, C: 210 (1895)

Accepted by

  • Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015). The Plants of Sudan and South Sudan: 1-400. Kew publishing, Royal Botanic Gardens, Kew.
  • Fischer, E., Rembold, K., Althof, A. & Obholzer, J. (2010). Annotated checklist of the vascular plants of Kakamega forest, Western province, Kenya Journal of East African Natural History 99: 129-226.
  • Ghazanfar, S.A. (2007). Flora of the Sultanate of Oman. volume 2. Crassulaceae - Apiaceae Scripta Botanica Belgica 36: 1-220.
  • Hedberg, I. & Edwards, S. (eds.) (1989 publ. 1990). Flora of Ethiopia and Eritrea 3: 1-659. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
  • Lock, J.M. (1989). Legumes of Africa a check-list: 1-619. Royal Botanic Gardens, Kew.
  • Mosti, S., Raffaelli, M. & Tardelli, M. (2012). Contributions to the flora of central-southern Dhofar (Sultanate of Oman) Webbia; Raccolta de Scritti Botanici 67: 65-91.
  • Patzelt, A. & al. (2020). Studies in the flora of Arabia: XXXIV. Sixty new records from the Sultanate of Oman Edinburgh Journal of Botany 77: 413-437.
  • Thulin, M. (ed.) (1993). Flora of Somalia 1: 1-493. The Royal Botanic Gardens, Kew.

Literature

Kew Backbone Distributions

  • Audru, J., Cesar, J. & Lebrun, J.-P. (1994). Les Plantes Vasculaires de la République de Djibouti. Flore Illustrée 1: 1-336. CIRAD, Départerment d'Elevage et de Médecine vétérinaire, Djibouti.
  • Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015). The Plants of Sudan and South Sudan: 1-400. Kew publishing, Royal Botanic Gardens, Kew.
  • Fischer, E., Rembold, K., Althof, A. & Obholzer, J. (2010). Annotated checklist of the vascular plants of Kakamega forest, Western province, Kenya Journal of East African Natural History 99: 129-226.
  • Ghazanfar, S.A. (2007). Flora of the Sultanate of Oman. volume 2. Crassulaceae - Apiaceae Scripta Botanica Belgica 36: 1-220.
  • Mosti, S., Raffaelli, M. & Tardelli, M. (2012). Contributions to the flora of central-southern Dhofar (Sultanate of Oman) Webbia; Raccolta de Scritti Botanici 67: 65-91.

Flora of Somalia

  • Flora Somalia, Vol 1, (1993) Author: by M. Thulin [updated by M. Thulin 2008]

Flora of Tropical East Africa

  • Gillett in Kew Bulletin, Add. Ser. 1: 118 (1958).
  • J.P.M. Brenan, Check-lists of the Forest Trees and Shrubs of the British Empire no. 5, part II, Tanganyika Territory p. 428 (1949).
  • Taub. in Die Pflanzenwelt Ost-Afrikas und der Nachbargebiete, Theile C: 210 (1895).

International Legume Database and Information Service

  • Gillett, J. B. et al. (1971). Papilionoideae. In: Fl. Trop. E. Africa, Milne-Redhead & Polhill

  • Flora of Somalia

    Flora of Somalia
    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

  • Herbarium Catalogue Specimens

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

  • International Legume Database and Information Service

    International Legume Database and Information Service (ILDIS) V10.39 Nov 2011
    http://creativecommons.org/licenses/by/3.0

  • Kew Backbone Distributions

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. 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 2022. 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