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This species is accepted, and its native range is Tropical Africa.
A specimen from Kew's Herbarium

[FTEA]

Acanthaceae (part 2), Kaj Vollesen. Flora of Tropical East Africa. 2008

Type
Types: Sudan, Bongo, Gir, Schweinfurth 2155 (K!, isosyn.); Niamniam Nobambisso, Schweinfurth 3754 (not seen); Tukamis, Saiba Indimma, Schweinfurth 3789 (not seen)
Morphology General Habit
Erect perennial with single stems to 60 cm tall from creeping rhizome; young stems pilose or sparsely so with broad curly glossy glandular hairs to 2 mm long
Morphology Leaves
Leaves with petiole 5–25 mm long; lamina ovate or broadly so, largest 4–7.5 × 2.2–4.2 cm, apex acute, base cuneate to truncate (rarely subcordate), pubescent to pilose or sparsely so. Flowers solitary or in 2-flowered axillary cymes; peduncle in cymes 3–7 mm long; pedicels 1–3 mm long, glabrous to pilose; bracteoles (bracts in cymes) ovate-elliptic or narrowly so, 11–27 × 3–12 mm
Morphology Reproductive morphology Flowers Calyx
Calyx 5–7 mm long, divided to (1–)2–3 mm from base, glabrous or lobes with scattered pilose hairs; lobes narrowly triangular
Morphology Reproductive morphology Flowers Corolla
Corolla open during the day, mauve; tube 16–23 mm long of which the basal cylindric part 6–8 mm and the throat 8–13 mm long; lobes 8–12 × 6–11 mm, ovate-elliptic with entire to slightly crenate margin
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens included in throat, didynamous, anthers not overlapping; filaments fused for 1–2 mm at base, free parts 2–3 and 5–8 mm long; anthers 1.5–2 mm long
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary glabrous.
Morphology Reproductive morphology Flowers Gynoecium Stigma
Ventral stigma lobe 1–1.5 × 0.5–1 mm
Morphology Reproductive morphology Fruits
Capsule clavate, glabrous, 13–18 mm long, 8–14-seeded
Morphology Reproductive morphology Seeds
Seed ellipsoid to circular, brown, 3–3.5 × 2.5–3.5 mm.
Ecology
Wetter types of grassland, bushland and woodland; 300–1450 m
Note
Almost certainly also in W and SW Tanzania. It has been collected close to the Zambia/Tanzania border. Very closely related to R. patula from which it differs in the habit, in the long broad curly glossy glandular hairs and in the longer pair of filaments being 3–5 mm longer than the shorter pair. R. praetermissa also has the flower open during the day while in R. patula it drops early in the morning.
Distribution
Flora districts: U1 T8 Range: Senegal, Mali, Sierra Leone, Ivory Coast, Ghana, Togo, Benin, Cameroon, Gabon, Central African Republic, Congo-Kinshasa, Rwanda, Burundi, Sudan, Zambia, Malawi

[FWTA]

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

Morphology General Habit
A decumbent undershrub
Morphology Reproductive morphology Flowers
White or blue-purple flowers, the corolla pubescent, outside, 1 in. or more long.

Native to:

Benin, Burkina, Burundi, Cameroon, Central African Repu, Chad, Gabon, Ghana, Ivory Coast, Malawi, Mali, Mauritania, Mozambique, Oman, Rwanda, Senegal, Sierra Leone, Sudan, Tanzania, Togo, Uganda, Yemen, Zambia, Zaïre

Ruellia praetermissa Schweinf. ex Lindau appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Nov 27, 1896 Schweinfurth, G. [2155], Sudan K000393976 isotype

First published in Bot. Jahrb. Syst. 20: 15 (1894)

Accepted by

  • Akoègninou, A., van der Burg, W.J. & van der Maesen, L.J.G. (eds.) (2006). Flore Analytique du Bénin: 1-1034. Backhuys Publishers.
  • Barry, J. P. & Celles, J.S. (1991). Flore de Mauritanie 1: 1-359. Centre Regional de Documentation Pedagogique, Nice.
  • Boudet, G., Lebrun, J.P. & Demange, R. (1986). Catalogue des plantes vasculaires du Mali: 1-465. Etudes d'Elevage et de Médecine Vétérinaire des Pays Tropicaux.
  • Boulvert, Y. (1977). Catalogue de la Flore de Centrafrique 2(1): 1-85. 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.
  • Ghazanfar, S.A. (1992). An Annotated Catalogue of the Vascular Plants of Oman and their Vernacular names Scripta Botanica Belgica 2: 1-153.
  • Hepper, F.N. (ed.) (1963). Flora of West Tropical Africa, ed. 2, 2: 1-544.
  • Lebrun, J.-P., Audru, J., Gaston, A. & Mosnier, M. (1972). Catalogue des Plantes Vasculaires du Tchad Méridional: 1-289. Institut d' Elevage et de Médecine Vétérinaire des Pays Tropicaux, Maisons Alfort.
  • Onana, J.M. (2011). The vascular plants of Cameroon a taxonomic checklist with IUCN assessments: 1-195. National herbarium of Cameroon, Yaoundé.
  • Sosef, M.S.M. & al. (2006). Check-list des plantes vasculaires du Gabon Scripta Botanica Belgica 35: 1-438.
  • Thiombiano, A., Schmidt, M., Dressler, S., Ouédraogo, A., Hahn, K. & Zizka, G. (2012). Catalogue des plantes vasculaires du Burkina Faso Boissiera 65: 1-391.
  • Vollesen, K. (2008). Flora of Tropical East Africa, Acanthaceae(1): 1-285.
  • Vollesen, K. (2013). Flora Zambesiaca 8(5): 1-184. Royal Botanic Gardens, Kew.
  • Wood, J.R.I. (1997). A handbook of the Yemen Flora: 1-434. Royal Botanic Gardens, Kew.

Literature

Flora of West Tropical Africa

  • Chev. Etud. Fl. Afr. Centr. 1: 232 (1913)
  • F. W. Andr. Fl. Sudan 3: 187 (1956).
  • F.T.A. 5: 45
  • in Engl. Bot. Jahrb. 20: 15 (1894)

Kew Backbone Distributions

  • Akoègninou, A., van der Burg, W.J. & van der Maesen, L.J.G. (eds.) (2006). Flore Analytique du Bénin: 1-1034. Backhuys Publishers.
  • Barry, J. P. & Celles, J.S. (1991). Flore de Mauritanie 1: 1-359. Centre Regional de Documentation Pedagogique, Nice.
  • Boudet, G., Lebrun, J.P. & Demange, R. (1986). Catalogue des plantes vasculaires du Mali: 1-465. Etudes d'Elevage et de Médecine Vétérinaire des Pays Tropicaux.
  • Boulvert, Y. (1977). Catalogue de la Flore de Centrafrique 2(1): 1-85. 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.
  • Ghazanfar, S.A. (1992). An Annotated Catalogue of the Vascular Plants of Oman and their Vernacular names Scripta Botanica Belgica 2: 1-153.
  • Hepper, F.N. (ed.) (1963). Flora of West Tropical Africa, ed. 2, 2: 1-544.
  • Lebrun, J.-P., Audru, J., Gaston, A. & Mosnier, M. (1972). Catalogue des Plantes Vasculaires du Tchad Méridional: 1-289. Institut d' Elevage et de Médecine Vétérinaire des Pays Tropicaux, Maisons Alfort.
  • Onana, J.M. (2011). The vascular plants of Cameroon a taxonomic checklist with IUCN assessments: 1-195. National herbarium of Cameroon, Yaoundé.
  • Sosef, M.S.M. & al. (2006). Check-list des plantes vasculaires du Gabon Scripta Botanica Belgica 35: 1-438.
  • Thiombiano, A., Schmidt, M., Dressler, S., Ouédraogo, A., Hahn, K. & Zizka, G. (2012). Catalogue des plantes vasculaires du Burkina Faso Boissiera 65: 1-391.
  • Vollesen, K. (2008). Flora of Tropical East Africa, Acanthaceae(1): 1-285.
  • Vollesen, K. (2013). Flora Zambesiaca 8(5): 1-184. Royal Botanic Gardens, Kew.
  • Wood, J.R.I. (1997). A handbook of the Yemen Flora: 1-434. Royal Botanic Gardens, Kew.

Flora of Tropical East Africa

  • Burkill, Useful Pl. W. Trop. Afr. 1: 26 (1985)
  • E. & P. Pf. IV,3b: 310 (1895)
  • E.J. 20: 15 (1894)
  • E.P.A.: 939 (1964)
  • F.P.S. 3: 187 (1956)
  • F.T.A. 5: 45 (1899)
  • F.W.T.A. (ed. 2) 2: 396 (1963)
  • Fl. Gabon 13: 11 (1966)
  • Lebrun & Stork, Enum. Pl. Afr. Trop. 4: 501 (1997).

Flora of Tropical East Africa
Flora of Tropical East Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Flora of West Tropical Africa
Flora of West Tropical 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/

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 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