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This species is accepted, and its native range is SE. Kenya to E. Tanzania.
A specimen from Kew's Herbarium

[FTEA]

Lamiaceae (Labiatae), A.J. Paton, G. Bramley, O. Ryding, R.M. Polhill, Y.B. Harvey, M. Iwarsson, F. Willis, P.B. Phillipson, K. Balkwill, C.W. Lukhoba, D.F. Otieno, & R.M. Harley. Flora of Tropical East Africa. 2009

Type
Type: Tanzania, without precise locality, Hannington s.n (K!, holo.)
Morphology General Habit
Perennial woody herb or shrub, 0.3–1 m tall
Morphology Stem
Stems erect, quadrangular or rounded-quadrangular, woody at base with epidermis tearing in strips, pubescent with retrorse simple hairs and dark sessile glands
Morphology Leaves
Leaves petiolate; blade rugose, ovate, 1.5–3.5 × 1–2 cm, crenate, apex round or obtuse, base cuneate or shortly attenuate, pubescent with numerous red sessile glands beneath; petiole 2–4 mm long
Morphology Reproductive morphology Inflorescences
Inflorescence lax, with flowers arranged in 6-flowered verticils 5–15 mm apart; bracts small, ovate or broadly ovate, 2–3 × 1–2 mm, reflexed below; pedicels 3 mm long, spreading or ascending, slightly flattened, curving distally
Morphology Reproductive morphology Flowers Calyx
Calyx horizontal, 2.5 mm long at anthesis, pubescent with short spreading hairs and numerous reddish sessile glands; fruiting calyx downward-pointing, vertical or not, 4–5 mm long
Morphology Reproductive morphology Flowers Corolla
Corolla white or pale pink, 4–5 mm long; tube funnel-shaped, straight, shortly exserted from the calyx; anterior lip deflexed or horizontal, not enclosing stamens at anthesis, lips with red sessile glands
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens shortly exserted ± 1 mm, posterior ciliate at base
Morphology Reproductive morphology Fruits
Nutlets dark brown, ovate-oblong in outline, 1.5 mm long, minutely tuberculate, producing a small amount of mucilage when wet.
Ecology
Setaria-Sporobolus grassland on black clay, Terminalia wooded grassland; 75–110 m
Conservation
Least concern; widespread, unlikely to be threatened
Note
Very similar to O. bullosus Chiov. from Somalia but with slightly smaller flowers.
Distribution
Range: Not known elsewhere Flora districts: K7 T3 T6 T8

Native to:

Kenya, Tanzania

Orthosiphon hanningtonii (Baker) A.J.Paton appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Oct 8, 1986 Hannington, J. [s.n.], Tanzania K000347201 Unknown type material

First published in Grana 31: 162 (1992)

Accepted by

  • Govaerts, R. (2003). World Checklist of Selected Plant Families Database in ACCESS: 1-216203. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Paton, A.J., Bramley, G., Ryding, O., Polhill, R., Harvey, Y., Iwarsson, M., Willis, F., Phillipson, P., Balkwill, K., Lukhoba, C., Otiend, D & Harley (2009). Lamiaceae (Labiatae) Flora of Tropical East Africa: 1-430.
  • Thulin, M. (ed.) (2006). Flora of Somalia 3: 1-626. The Royal Botanic Gardens, Kew.

Literature

Kew Backbone Distributions

  • Paton, A.J., Bramley, G., Ryding, O., Polhill, R., Harvey, Y., Iwarsson, M., Willis, F., Phillipson, P., Balkwill, K., Lukhoba, C., Otiend, D & Harley (2009). Lamiaceae (Labiatae) Flora of Tropical East Africa: 1-430.

Flora of Tropical East Africa

  • Grana 31: 162 (1992).

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/

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