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This species is accepted, and its native range is Tanzania (W. Usambara Mountains).
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, Lushoto District: W Usambara Mts, Kwa Mshusa [Mshuza], Holst 8985 (K!, holo.)
Morphology General Habit
Shrub to 1.5 m high
Morphology Stem
Stems erect, quadrangular, branching, epidermis peeling in strips below, pubescent with patent glandular and eglandular hairs
Morphology Leaves
Leaves petiolate; blades ovate, 1–3 × 0.9–2.5 cm, crenate, apex round or obtuse, base truncate to broadly cuneate, pubescent and with sessile glands; petioles 3–5 mm long
Morphology Reproductive morphology Inflorescences
Inflorescence lax with 4–8-flowered verticils 1 cm apart; bracts narrowly ovate, 2–3 mm long, erect above forming an inconspicuous coma; pedicels 4–5 mm, terete, spreading to ascending
Morphology Reproductive morphology Flowers Calyx
Calyx 3–4 mm long at anthesis; fruiting calyx shortly tubular; throat open in fruit, glabrous, 5–6 mm long; teeth of anterior lip lanceolate, posterior margin of lateral lobe not extended towards the posterior lip
Morphology Reproductive morphology Flowers Corolla
Corolla reddish purple, sometimes marked white, 7–9 mm long; tube straight, parallel-sided, dilating at throat; 4-lobed, posterior lobe emarginate
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary glabrous or with 1–2 hairs at apex
Morphology Reproductive morphology Fruits
Nutlets light brown, 1 mm long, smooth, narrowly ovoid in outline, triangular in cross-section, truncate at apex, glabrous, producing a small amount of mucilage when wet.
Ecology
Steep dry hillsides; 1500 m
Conservation
Known from only a few gatherings from a small area of dry vegetation on the W Usambara Mts; possibly threatened
Distribution
Flora districts: Known only from the W Usambara Mts Flora districts: T3

Native to:

Tanzania

Endostemon usambarensis M.R.Ashby appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Jun 1, 1991 Kisena [396], Tanzania K000467370
Jan 1, 1935 Holst, C. [8985], Tanzania K000347247 Unknown type material
Drummond, R.B. [2752], Tanzania K000467369

First published in J. Bot. 74: 130 (1936)

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.

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

  • J.B. 74: 130 (1936)
  • K.B. 49: 698 (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