Orthosiphon hanningtonii (Baker) A.J.Paton

First published in Grana 31: 162 (1992)
This species is accepted
The native range of this species is SE. Kenya to E. Tanzania. It is a subshrub or shrub and grows primarily in the seasonally dry tropical biome.

Descriptions

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/179774/1589616

Conservation
EN - endangered
[IUCN]

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: not threatened. Confidence: confident
[AERP]

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
[FTEA]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0
  • Flora of Tropical East Africa

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

    • 'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/
  • IUCN Categories

    • IUCN Red List of Threatened Species
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2025. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2025. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0