Compilation
Plectranthus barbatus

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Name

Identification
Coleus speciosus Baker,f. [family LAMIACEAE ] Plectranthus barbatus Andrews [family LAMIACEAE ] (stored under name); Verified by Ryding,O.,
Related name
  • Plectranthus comosus
  • Coleus speciosus
  • coleus forskohlii
  • Ocimum unrecorded
  • Ocimum cinereum
  • plectranthus barbatus
  • Coleus penzigii
  • Plectranthus barbatus
  • Coleus forskohlaei
  • Coleus barbatus
  • Plectranthus pseudobarbatus
  • Ocimum saccharoides
  • Plectranthus grandis
  • Coleus lanuginosus
  • Coleus vestitus
  • Coleus coerulescens
  • coleus barbatus
  • Coleus forskohlii
  • Coleus forsskaolii
  • Coleus forskolaei
  • Plectranthus lanuginosus
  • Coleus unrecorded
  • coleus penzigii
  • Coleus grandis
  • Plectranthus forskohlii

Flora

Entry for PLECTRANTHUS barbatus Andrews [family LABIATAE]
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora Somalia
Resource Type
Reference Sources
Entry From
Flora Somalia, (2000) Author: by O. Ryding (Aeollanthus, Basilicum, Clinopodium, Endostemon, Fuerstia, Hoslundia, Lavandula, Leucas, Micromeria, Nepeta, Ocimum, Orthosiphon, Otostegia, Plectranthus, Renschia, Salvia, Scutellaria, Stachys, Teucrium, Tinnea) and M. Thulin (Clerodendrum, Premna, Rotheca, Vitex) [updated by M. Thulin 2008]
Names
PLECTRANTHUS barbatus Andrews [family LABIATAE], (1809);
Coleus barbatus (Andrews) Benth. [family LABIATAE], (1831). [type as above]
Coleus vestitus Baker [family LABIATAE], (1895), non P. vestitus Benth.;. type: N1, “Golis” range, Cole s.n. (K lecto.).
PLECTRANTHUS pseudobarbatus J.K. Morton [family LABIATAE], (1998);. type: N1, “Golis” range, Cole s.n. (K lecto.).
Coleus speciosus Baker f. [family LABIATAE], (1899);. type: N1, “Wagga” Mt, Lort Phillips s.n. (BM holo.).
Coleus coerulescens Gürke [family LABIATAE], (1906);
PLECTRANTHUS coerulescens (Gürke) R.H. Willemse [family LABIATAE], (1985). [type as above]
Information
Subshrub or woody herb, 0.4–1.2 m tall (in Somalia). Leaves petiolate, rather densely pubescent with greyish hairs; blade ovate to broadly ovate, 40–100 × 15–50 mm, apex acute to rounded, base cuneate-attenuate, margin crenate. Inflorescences rather lax; bracts narrowly or broadly ovate, early deciduous; cymes 3–5-flowered, subsessile; pedicels 4–9 mm long in the fruiting stage, with short glands and much longer often over 1 mm long eglandular hairs. Fruiting calyx 6–9 mm long, densely villous inside the throat; upper lip suborbicular or broadly ovate, concave, decurrent; lower lobes 3–4 mm long, slightly longer than the lateral lobes. Corolla 17–19(–25) mm long (in Somalia), purple-violet; lower lip 8–16 mm long, much longer than the upper lip. Stamens connate. Nutlets c. 1.5 × 1.2 mm, black, glossy, producing mucilage when wet.
Range
N1 Eritrea, Ethiopia, Sudan, East Africa, Arabia, India to Sri Lanka, South China and Thailand.
Altitude range
1000–2070 m.
Distribution
SOMALIA Wood S/73/128; Gillett 4573; Bally 11681.
Notes
P. barbatus is a very variable species. Plants from Somalia are smaller and more small-flowered than most of the plants from East Africa, and have broader leaves than many of the plants from Ethiopia.

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