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This species is accepted, and its native range is S. Tanzania to NE. Zambia.

[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. Leonotis, M Iwarsson & YB Harve. Flora of Tropical East Africa. 2009

Type
Type: Malawi, Chitipa–Chinunka road, near Kaseye Mission at bridge of Vumbo R., Iwarsson & Ryding 972 (UPS!, holo. DSM!, EA!, K!, MAL!, NHT!, iso.)
Morphology General Habit
Shrub (1.8–)3–5 m high, branched towards apex, with up to 40 shoots from a woody rootstock
Morphology Stem
Stems with internodes 1–3 cm long, with short antrorse hairs and a few longer hairs, occasionally with scattered sessile glands, green at apex, pale brown at midpoint, grey-striate at base with lenticels 10 × 1 mm; nodes prominent and with ring-like leaf scars
Morphology Leaves
Leaves petiolate; blade lanceolate-elliptic to narrowly elliptic, 5–12 × (0.5–)1–3 cm, margin involute, crenate only in the apical 1/2 – 2/3, apex acuminate, base attenuate, both surfaces sparsely pubescent to glabrous and covered with sessile glands, with 8–10 lateral veins per leaf; petiole (6–)8–12 mm long, densely covered with short antrorse hairs and occasionally with sessile glands
Morphology Reproductive morphology Inflorescences
Inflorescence of 2–3(–5) verticils per branch, internodes usually up to 10 cm long; bracts leaf-like, 42–90 × 5–12 mm, hairy like the leaves; bracteoles green, linear, 10–20(–30) × 1–2(–3) mm, with short antrorse hairs and occasional scattered glands, the hairs occasionally brownish, particularly on margins and midvein; verticils hemispherical, 37–66 mm in diameter, each verticil with ± 12 branches 2–5 mm long with ± 10 buds per branch; pedicels 2–3(–6 in fruit) mm long, pubescent, occasionally ridged
Morphology Reproductive morphology Flowers Calyx
Calyx 18–25 mm long, 4–5 mm diameter at throat, buds urceolate (swollen at midpoint and constricted at throat), 10-toothed, brownish, shortly pubescent and covered with sessile glands; mouth oblique with 3 ventral teeth partially united and bent outwards to form an anterior lip; dorsal tooth triangular, 3–5 mm long, apiculate; lateral teeth triangular, 1–4 mm long, apiculate; ventral teeth united for 1–2 mm, 2–3 mm wide, outer teeth 1–2 mm long, middle tooth slightly shorter, triangular, apiculate
Morphology Reproductive morphology Flowers Corolla
Corolla 43–50 mm long, with flame-orange/red hairs; tube 23–29 mm long, with 3–4 distinct fringes (bands) within (near base); posterior lip 17–22 mm long, with a small (10 mm long) hump distally, the hair fringe at margin ± 3 mm long, the orange woolly hair enclosing anthers and stigma well developed; anterior lip 3-lobed, 3–6 mm long, deflexed on the tube, scantily covered with curved orange hairs on the outer surface, all lobes retuse at apex, lateral lobes asymmetrically so, the middle lobe retuse at midpoint
Morphology Reproductive morphology Fruits
Nutlets oblong, 3.7–4.4 × 1.7–2.2 mm, 3-angled, with distinct marginal rim, truncate and glandular distally, glossy, glabrous
Figures
Fig 14, p 98
Ecology
Upland grassland and forest margins, occasionally in secondary forest and along roads; 1150–2150 m
Conservation
Possibly vulnerable; categorised as VU (D2), collected about 10 times in several districts of southern Tanzania, but only once in both Zambia and Malawi, threatened by encroaching settlement (Iwarsson & Harvey K.B. 58: 606 (2003)). However, occurs in disturbed areas so habitat perhaps not declining.
Note
Most similar to L. decadonta var. vestita, but the calyx is constricted at the throat and has longer teeth, the corolla is longer and the leaves are more narrowly lanceolate.
Distribution
Range: Zambia, Malawi Flora districts: T7

Native to:

Malawi, Tanzania, Zambia

Leonotis grandis Iwarsson & Y.B.Harv. appears in other Kew resources:

First published in Kew Bull. 58: 605 (2003)

Accepted by

  • Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the Trustees of the Royal Botanic Gardens, Kew.
  • Paton, A.J., Bramley, G., Ryding, O., Polhill, R.M., Harvey, Y.B., Iwarsson, M., Otieno, D., Balkwill, K., Phillipson, P.B., Harley, R.M. & Willis, F. (2013). Flora Zambesiaca 8(8): 1-346. Royal Botanic Gardens, Kew.

Literature

Flora of Tropical East Africa

  • K.B. 58: 605, fig. 1 (2003).

Flora of Tropical East Africa
Flora of Tropical East Africa
http://creativecommons.org/licenses/by-nc-sa/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