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This species is accepted, and its native range is Ghana to SW. Ethiopia and Tanzania, Angola.
A specimen from Kew's Herbarium

[KBu]

Darbyshire, I., Tripp, E.A. & Chase, F.M. (2019). A taxonomic revision of Acanthaceae tribe Barlerieae in Angola and Namibia. Part 1. Kew Bulletin 74: 5. https://doi.org/10.1007/s12225-018-9791-0

Conservation
This species is widespread in the Guineo-Congolian forests with an EOO of over 3.9 million km2 and can be locally common including in disturbed habitat; it was assessed as of Least Concern (LC) by Darbyshire (2010b). In Angola, it is at the southwestern edge of its range and is restricted to the Maiombe forests of Cabinda and the forests of the north-flowing rivers (Congo tributaries) of Lunda Norte. It was recorded as very frequent by Monteiro & Murta at Buco Zau in Cabinda in 1960. However, forest extent has declined in this region over recent decades, with extensive mining activity being clearly visible on Google Earth imagery. Much of the riverine forest around Dundo in Lunda Norte has also been lost due to extensive alluvial diamond mining along the Luachimo River and its tributaries and expansion of Dundo town (Huntley 2011; Cheek et al. 2015). Therefore, this species is likely to be nationally threatened in Angola under IUCN criterion B.
Distribution
Angola (Cabinda and Lunda Norte Provinces.); widespread in the Guineo-Congolian forests of Ghana, Nigeria, Cameroon, Central African Republic, Equatorial Guinea, Gabon, Congo (Brazzaville), D. R. Congo, South Sudan, Ethiopia, Uganda and Tanzania.
Ecology
In Angola, Barleria brownii has been recorded in riverine and lowland forest, often in clearings, margins or areas of secondary regrowth; 50 – 700 m elevation. It is a species of the Guineo-Congolian Regional Centre of Endemism (White 1983).
Morphology General Habit
Straggling or scandent perennial herb or shrub, 40 – 600 cm tall; young stems with short retrorse hairs in two opposite lines, nodes and uppermost internodes sparsely yellow-strigose, soon glabrescent
Morphology Leaves
Leaves on petiole 10 – 37 mm long; blade ovate to oblong-elliptic, 6 – 13 × 3 – 6.5 cm (l:w ratio 1.7 – 2.8:1), base cuneate, shortly attenuate or rounded, margin entire, apex acuminate or attenuate, glabrous except for occasional appressed hairs on main veins; lateral veins 4 – 6 pairs
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens inserted 5.5 – 9 mm from base of corolla tube, long exserted; filaments 35 – 65 mm long; anthers 2.5 – 4 mm long; lateral staminodes 1.5 – 9.5 mm long, with minute stalked glands and occasional hairs towards base or throughout, antherodes well developed, 1.2 – 2 mm long
Morphology Reproductive morphology Flowers Calyx
Calyx variable [see note], in our region anterior lobe elliptic to ovate-orbicular, 10.5 – 19.5 × 8 – 17 mm, base obtuse to rounded, margin entire, apex obtuse to rounded or shallowly emarginate, surface appressed-pubescent or sparsely so, with or without few long glandular hairs particularly towards apex; posterior lobe 11 – 24 × 8 – 19 mm, margin often involute, apex obtuse or slightly attenuate; lateral lobes 5 – 7.5 mm long
Morphology Reproductive morphology Flowers Corolla
Corolla 30 – 50 mm long, white, pinkish-white or blue, throat often tinged pink or purple; glandular-pilose and with fewer eglandular hairs externally; tube 13.5 – 21 mm long, campanulate above attachment point of stamens; limb in “4+1” configuration, abaxial lobe offset by 2.5 – 6.5 mm, obovate or elliptic, 16 – 27 × 11.5 – 15 mm, apex rounded; lateral lobes obovate-elliptic to oblong-elliptic, 14.5 – 26 × 7.5 – 12.5 mm, apices rounded or obtuse; adaxial lobes as lateral pair but 4.5 – 8 mm wide
Morphology Reproductive morphology Flowers Gynoecium Pistil
Pistil glabrous; stigma long exserted, clavate, 0.4 – 0.9 mm long
Morphology Reproductive morphology Fruits
Capsule 2-seeded, 12.5 – 14.5 mm long, glabrous; seeds ± 6 × 5 mm.
Morphology Reproductive morphology Inflorescences
Inflorescences of 2 – 9-flowered, unilateral or partially dichasial cymes arranged in a paniculate or spiciform terminal thyrse 2 – 12 cm long; bracts broadly ovate to somewhat obovate, 6 – 25 × 3.5 – 23 mm; bracteoles variable, linear, oblanceolate, obovate or elliptic, 2 – 18 × 0.3 – 7 mm, margin entire, surface appressed-pubescent or sparsely so
Note
The Angolan specimens seen have broadly elliptic to ovate-orbicular outer calyx lobes which match the form described from Nigeria as Barleria talbotii S. Moore (Rendle et al. 1913). However, as noted in Darbyshire (2010b), intermediates between this form and the narrower oblong-elliptic outer calyx lobes of typical B. brownii are recorded in West and Central Africa. As there is no clear geographic trend, talbotii would at most warrant varietal status.
Type
Uganda, Entebbe, fl. Aug. 1905, Brown 313 (lectotype BM! [BM000931100], selected here; isolectotypes K! [K000394444, K000394445]).

[FWTA]

Acanthaceae, H. Heine. Flora of West Tropical Africa 2. 1963

Morphology General Habit
A straggling shrub with smooth branches
Morphology Reproductive morphology Flowers
Blue flowers about 2 in. long.

Native to:

Angola, Cabinda, Cameroon, Central African Repu, Congo, Equatorial Guinea, Ethiopia, Gabon, Ghana, Nigeria, Sudan, Tanzania, Uganda, Zaïre

Barleria brownii S.Moore appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Jan 1, 1996 Etuge, M. [1480], Cameroon K000197507
Dec 1, 1995 Cheek, M. [7294], Cameroon K000011270
Brown, E. [313], Uganda K000394444 Unknown type material
Brown, E. [313], Uganda K000394445 Unknown type material
Talbot, P.A. [1396], Nigeria K000394483
Talbot, P.A. [1396], Nigeria K000394482
Gossweiler, J. [14206], Angola K000508526

First published in J. Bot. 46: 73 (1908)

Accepted by

  • Boulvert, Y. (1977). Catalogue de la Flore de Centrafrique 1: 1-114. ORSTROM, Bangui.
  • 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.
  • Darbyshire, I., Tripp, E.A. & Chase, F.M. (2019). A taxonomic revision of Acanthaceae tribe Barlerieae in Angola and Namibia. Part 1 Kew Bulletin 74(5): 1-85. Royal Botanic Gardens, Kew.
  • Darbyshire, I., Vollesen, K. & Kelbessa, E. (2010). Flora of Tropical East Africa, Acanthaceae (Part 2): 287-756.
  • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
  • Govaerts, R. (1996). World Checklist of Seed Plants 2(1, 2): 1-492. MIM, Deurne.
  • Hedberg, I., Kelbessa, E., Edwards, S., Demissew, S. & Persson, E. (eds.) (2006). Flora of Ethiopia and Eritrea 5: 1-690. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
  • Lejoy, J., Ndjele, M.-B. & Geerinck, D. (2010). Catalogue-flore des plantes vasculaires des districts de Kisangani et de la Tshopo (RD Congo) Taxonomania 30: 1-307.
  • Onana, J.M. (2011). The vascular plants of Cameroon a taxonomic checklist with IUCN assessments: 1-195. National herbarium of Cameroon, Yaoundé.
  • Sita, P. & Moutsambote, J.-M. (2005). Catalogue des plantes vasculaires du Congo, ed. sept. 2005: 1-158. ORSTOM, Centre de Brazzaville.

Literature

Kew Bulletin

  • Cavaco, A. (1959). Subsídios para o estudo da biologia na Lunda. Contribution à l'étude de la flore de la Lunda d'après les récoltés de Gossweiler (1946 – 1948). Museo do Dundo. Publicações Culturais da Companhia de Diamantes de Angola (DIAMANG) No. 42.
  • Cheek, M., Poveda, L. L. & Darbyshire, I. (2015). Ledermaniella lunda sp. nov. (Podostemaceae) of Lunda Norte, Angola. Kew Bull. 70: 10 (5 pages).
  • Darbyshire, I. (2010a). The Barleria fulvostellata (Acanthaceae) complex in east Africa. Kew Bull. 64: 673 – 679.
  • Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds) (2015a). The Plants of Sudan and South Sudan. An annotated checklist. Royal Botanic Gardens, Kew.
  • Ensermu Kelbessa (2006). Acanthaceae. In: I. Hedberg, Ensermu Kelbessa, S. Edwards, Sebsebe Demissew & E. Persson (eds), Flora of Ethiopia & Eritrea Vol. 5: 345 – 495. The National Herbarium, Addis Ababa University & The Department of Systematic Botany, Uppsala University.
  • Heine, H. (1963). Acanthaceae. In: F. N. Hepper (ed.), Flora of West Tropical Africa. Second Edition, Vol. 2: 391 – 432. Crown Agents for Overseas Governments and Administrations, London.
  • Heine, H. (1966). Acanthacées. In: A. Aubreville (ed.), Flore du Gabon Vol. 13: 3 – 250. Museum National d’Histoire Naturelle, Paris.
  • Huntley, B. (2011). Biodiversity Rapid Assessment of the Lagoa Carumbo area, Lunda Norte, Angola. Unpubl. Report.
  • Klopper, R. R., Chatelain, C., Bänninger, V., Habashi, C., Steyn, H. M., de Wet, B. C., Arnold, T. H., Gautier, L., Smith, G. E. & Spichiger, R. (2006). Checklist of the flowering plants of sub-Saharan Africa. An index of accepted names and synonyms. South African Botanical Diversity Network Report No. 42, SABONET, Pretoria.
  • Lindau, G. (1911). Acanthaceae. In: J. Mildbraed, Wissenschaftliche Ergebnisse der Deutschen Zentral-Afrika Expedition 1907 – 1908, Band II. Botanik, pp. 291 – 310. Klinkhardt & Biermann, Leipzig.
  • Makholela, T. (2008). Acanthaceae. In: E. Figueiredo & G. F. Smith (eds), Plants of Angola / Plantas de Angola. Strelitzia 22. South African National Biodiversity Institute, Pretoria.
  • Moore, S. le (1908). Alabastra Diversa. Part XVI. New or rare African plants. J. Bot. 46: 71 – 76.
  • Moore, S. le (1930). Mr John Gossweiler’s plants from Angola and Portuguese Congo. Acanthaceae. J. Bot. 68, Suppl. II: 126 – 139.
  • Rendle, A. B., Baker, E. G., Wernham, H. F., Moore, S. et al. (1913). Catalogue of the Plants Collected by Mr. & Mrs, P. A. Talbot in the Oban District, South Nigeria. British Museum, Natural History, London.
  • Sosef, M. S. M. (2006). Acanthaceae. In: M. S. M. Sosef et al. (eds), Check-list des plantes vasculaires du Gabon / Checklist of Gabonese vascular plants. Scripta Bot. Belg. Vol. 35. Jardin Botanique National du Belgique, Meise.
  • White, F. (1983). Vegetation of Africa. A Descriptive Memoir to Accompany the UNESCO/AETFAT/UNSO Vegetation Map of Africa. UNESCO, Paris.

Flora of West Tropical Africa

  • in J. Bot. 46: 73 (1908).

Kew Backbone Distributions

  • Boulvert, Y. (1977). Catalogue de la Flore de Centrafrique 1: 1-114. ORSTROM, Bangui.
  • Darbyshire, I., Tripp, E.A. & Chase, F.M. (2019). A taxonomic revision of Acanthaceae tribe Barlerieae in Angola and Namibia. Part 1 Kew Bulletin 74(5): 1-85. Royal Botanic Gardens, Kew.
  • Lejoy, J., Ndjele, M.-B. & Geerinck, D. (2010). Catalogue-flore des plantes vasculaires des districts de Kisangani et de la Tshopo (RD Congo) Taxonomania 30: 1-307.
  • Onana, J.M. (2011). The vascular plants of Cameroon a taxonomic checklist with IUCN assessments: 1-195. National herbarium of Cameroon, Yaoundé.
  • Sita, P. & Moutsambote, J.-M. (2005). Catalogue des plantes vasculaires du Congo, ed. sept. 2005: 1-158. ORSTOM, Centre de Brazzaville.

Flora of West Tropical Africa
Flora of West Tropical Africa
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Herbarium Catalogue Specimens
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 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