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This species is accepted, and its native range is S. Ethiopia to N. & 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: Kenya, Kitui in Ukamba, Hildebrandt 2745 (B†, holo. BM!, K!, iso.)
Morphology General Habit
Aromatic perennial herb, 15–80 cm tall
Morphology Stem
Stems erect, quadrangular, arising from a woody rootstock, branching above, woody at base, pubescent with short retrorse, crisped or appressed eglandular simple hairs
Morphology Leaves
Leaves sessile or subsessile, often ascending, glandular-punctate; blade narrowly ovate or oblong, (0.7–)1–4 × 0.5–1.5 cm, serrate, round or obtuse at apex, truncate to broadly cuneate at base, pubescent, densely pubescent or subglabrous with scattered simple hairs on veins beneath; petiole 0–3(–5) mm long
Morphology Reproductive morphology Inflorescences
Inflorescence lax, with flowers arranged in 6-flowered verticils 10–20 mm apart; bracts purplish, ovate, 1 mm long, erect above, deciduous below; pedicels spreading, 4–5 mm long, slightly curved
Morphology Reproductive morphology Flowers Calyx
Calyx purplish, 3–4 mm long at anthesis; fruiting calyx 6–8 mm long, downward-pointing, pubescent with sessile glands
Morphology Reproductive morphology Flowers Corolla
Corolla pale mauve or bluish, often with posterior lip darker, 6–12 mm long; tube straight, thick, 4–7 mm long; posterior lip perpendicular to tube; anterior lip cucullate, enclosing stamens, curving upwards to become vertical and parallel to posterior lip
Morphology Reproductive morphology Fruits
Nutlets brown, ovoid, 1.5 mm long, minutely tuberculate, producing a very small amount of mucilage when wet.
Ecology
Seasonally waterlogged grassland, black cotton soil; 1000–1850 m, but down to sea-level in Tanga District
Conservation
Least concern; widely distributed
Note
Closely related to O. thymiflorus, but differing in the thicker corolla tube, the vertical corolla anterior lip which is parallel to the posterior lip and the subsessile leaves with truncate bases. The leaves also tend to be more strongly ascending, narrower and more oblong than those of O. thymiflorus. O. parvifolius is also closely related to the O. cladotrichos.
Distribution
Range: Southern Ethiopia Flora districts: U1 K1 K3 K4 K6 K7 T1 T2 T3 T5

Native to:

Ethiopia, Kenya, Tanzania, Uganda

Orthosiphon parvifolius Vatke appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Dec 1, 2012 Hemp [5572], Tanzania K000735693
Tanner, R. [479], Tanzania 15290.000
Hildebrandt, J.M. [2745], Kenya K000347195
Johnston, H.H. [s.n.], Tanzania Orthosiphon johnstonii K000347196 Unknown type material

First published in Linnaea 43: 87 (1881)

Accepted by

  • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
  • Govaerts, R. (2003). World Checklist of Selected Plant Families Database in ACCESS: 1-216203. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • 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.
  • 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.

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

  • F.T.A. 5: 367 (1900)
  • Fl. Eth. 5: 582 (2006).
  • J.B. 76: 43 (1938)
  • Linnaea 43: 87 (1881)
  • P.O.A. C: 349 (1895)
  • U.K.W.F.: 648 (1974)
  • U.K.W.F.: ed. 2: 297, t. 132 (1994)

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