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This species is accepted, and its native range is S. 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
Typus: Tanzania, Lindi District: Mwera Plateau, Schlieben 5977 (BM!, holo.; K!, iso.)
Morphology General Habit
Woody herb 20–30 cm tall
Morphology Stem
Stems woody, rounded-quadrangular, with sparse, patent or antrorse simple hairs interspersed on inflorescence axis with many patent gland-headed hairs
Morphology Leaves
Leaves ovate, 3.5–7 × 1.2–3.5 cm, serrate, round or obtuse at apex, attenuate at base; petiole 7–15 mm long
Morphology Reproductive morphology Inflorescences
Inflorescence lax, verticils 2-flowered, 6–10 mm apart; bracts small, inconspicuous, 1 mm long; pedicels spreading, 3–4 mm long
Morphology Reproductive morphology Flowers Calyx
Calyx horizontal or ascending, 3 mm long at anthesis; posterior lip broad, shortly decurrent; fruiting calyx not seen
Morphology Reproductive morphology Flowers Corolla
Corolla lilac, 15–20 mm long, tube 12–15 mm long, straight, parallel-sided, dilating slightly towards throat, anterior lip cucullate enclosing stamens
Morphology Reproductive morphology Fruits
Nutlets not seen.
Conservation
Known only from a single collection: possibly threatened
Note
O. schliebenii seems most closely related to O. nigripunctatus G. Taylor from Angola and Zambia, but the corolla is much longer, the flowers are consistently single to a small bract, with the adpressed eglandular hairs antrorse rather than retrorse on the inflorescence axis, without a tuft of long hairs at the nodes and the leaves ovate rather than elliptic to obovate. Although the arrangement of the flowers approximates to the condition found in Fuerstia, the stamens are all fertile. See Fig. 28: 3 & 4, p. 188.
Distribution
Range: Only known from type gathering Flora districts: T8

Native to:

Tanzania

Orthosiphon schliebenii A.J.Paton appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Schlieben, H.J. [5977], Tanzania K000467378

First published in Fl. Trop. E. Africa, Lamiac.: 187 (2009)

Accepted by

  • 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
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