Some species of Plectranthus are difficult to identify because of a lack of clear-cut morphological criteria to discriminate not only among species within the genus but also among the closely related genera. This has resulted in numerous taxonomic problems in the naming of species with the result that species have often been placed in several closely related genera like Coleus, Solenostemon and Englerastrum. In addition, some species formally placed in Plectranthus, are now recognized as the more distantly related genus Isodon.
Because of these taxonomic issues, different names have often been used for the same species of Plectranthus and thus it has been difficult to collate information about the ethnobotanical uses of this genus. Furthermore, the most commonly used medicinal species of Plectranthus have a high degree of synonymy[].
This report is very much indebted to the work of C.W. Lukhoba et al. - Journal of Ethnopharmacology 103 (2006) 1–24[] in untangling much of this mess of names, and utilizes the on-line Kew database ‘World Checklist of Selected Plant Families (http://wcsp.science.kew.org/home.do) for determining currently accepted names and synonyms (as of 2018).

Common Name:

General Information

Plectranthus lasianthus is a semi-succulent, herbaceous, perennial plant growing from a taproot and forming a mat of growth. It produces several stems up to 70cm long that usually trail along the ground but become erect at their ends, where the flowers are formed[, , ].
The plant is harvested from the wild for local use as a medicine and a pleasant smelling cosmetic.
A widely distributed plant, it is classified as 'Least Concern' in the IUCN Red List of Threatened Species(2013)[].

Known Hazards

None known

Botanical References

,

Range

Africa - Ethiopia, Uganda, Kenya, Tanzania, Zambia, Malawi, Mozambique, Namibia, Botswana, Zimbabwe, Swaziland, S. Africa, Madagascar.

Habitat

Rocky ground, Acacia-Commiphora bushland; at elevations from 100 - 1,900 metres[]. Damp, shady sites[]. Usually associated with dry thorn-scrub on brackish flats[].

Properties

Conservation Status	Least Concern
Medicinal Rating
Other Uses Rating
Habit	Perennial
Height	0.20 m
Pollinators	Insects
Cultivation Status	Wild

Cultivation Details

Not known

Edible Uses

None known

Medicinal

The plant is used in the treatment of infections and fevers[]
It is used to treat sore throats[].

Other Uses

The succulent, slightly toothed leaves, and also the stem, are very aromatic. They are dried in the sun then pulverised and used to make a cosmetic powder[].
The roots are also said to be suitable for making a cosmetic, aromatic powder[].

Propagation

Seed - sow in well-drained soil, covering lightly with a thin layer of sand, and place in a warm but shaded spot. The seed germinates in about three weeks[].
Cuttings of Plectranthus species generally root easily - soft tips root faster than semi-hardwood growth. The cuttings are best taken 60 - 100mm long with three or four nodes, making the cut just below a node. Place them in sand, perlite, vermiculite or peat, or any mixture of these, keep them moist and shaded and they should root in 2 - 3 weeks[]

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