Plectranthus
Plectranthus, with some 72 species, is a genus of perennial, rarely annual herbs or soft-wooded shrubs, sometimes succulent; sometimes with a tuberous base. Plectranthus species are found in Southern and Tropical Africa and Madagascar, and one in Sri Lanka. Several species are grown as ornamental plants, as leaf vegetables, as root vegetables for their edible tubers, or as medicine.
Plectranthus species are used as food plants by the larvae of some Lepidoptera species including the engrailed.
Recent phylogenetic analysis found Plectranthus to be paraphyletic with respect to Coleus, Solenostemon, Pycnostachys and Anisochilus. The most recent treatment of the genus resurrected the genus Coleus, and 212 names were changed from combinations in Plectranthus, Pycnostachys and Anisochilus. Equilabium was segregated from Plectranthus, after phylogenetic studies supported its recognition as a phylogenetically distinct genus.
Species
Paton et al. list 72 species:- Plectranthus alboviolaceus Gürke – South Africa: E. Cape Prov. to N. KwaZulu-Natal
- Plectranthus ambiguus Codd – South Africa: E. Cape Prov. to N. KwaZulu-Natal
- Plectranthus amplexicaulis Hedge – Madagascar
- Plectranthus antongilicus Hedge – Madagascar
- Plectranthus asymmetricus A.J.Paton – Zambia
- Plectranthus atroviolaceus Hedge – Madagascar
- Plectranthus betamponus Hedge – Madagascar
- Plectranthus bracteolatus A.J.Paton – Tanzania
- Plectranthus brevicaulis Hedge – Madagascar
- Plectranthus brevimentus T.J.Edwards – South Africa: Eastern Cape Prov
- Plectranthus canescens Benth. – Madagascar
- Plectranthus capuronii Hedge – Madagascar
- Plectranthus chimanimanensis S.Moore – E. Zimbabwe to W. Mozambique
- Plectranthus ciliatus E.Mey. – South Africa and Swaziland
- Plectranthus clementiae Hedge – Madagascar
- Plectranthus cordatus A.J.Paton & Phillipson – Madagascar
- Plectranthus decaryi Hedge – Madagascar
- Plectranthus delicatissimus Hedge – Madagascar
- Plectranthus ecklonii Benth. – South Africa
- Plectranthus elegans Britten – S. Malawi
- Plectranthus elegantulus Briq. – South Africa: KwaZulu-Natal
- Plectranthus ellipticus Hedge – Madagascar
- Plectranthus emirnensis Hedge – Madagascar
- Plectranthus ernstii Codd – South Africa: E. Cape Prov. to S. KwaZulu-Natal
- Plectranthus forsythii Hedge – Madagascar
- Plectranthus fruticosus L’Hér. – S. Mozambique to South Africa
- Plectranthus gardneri waites – Sri Lanka
- Plectranthus gibbosus Hedge – Madagascar
- Plectranthus grallatus Briq. – South Africa, Lesotho
- Plectranthus grandibracteatus Hedge – Madagascar
- Plectranthus guruensis A.J.Paton – Mozambique
- Plectranthus hexaphyllus Baker – Madagascar
- Plectranthus hilliardiae Codd – South Africa: E. Cape Prov. to KwaZulu-Natal
- Plectranthus hirsutus Hedge – Madagascar
- Plectranthus hoslundioides Scott-Elliot – Madagascar
- Plectranthus humbertii Hedge – Madagascar
- Plectranthus incrassatus Hedge – Madagascar
- Plectranthus laurifolius Hedge – Madagascar
- Plectranthus linearis Hedge – Madagascar
- Plectranthus longiflorus Benth. – Madagascar
- Plectranthus longipetiolatus Hedge – Madagascar
- Plectranthus lucidus van Jaarsv. & T.J.Edwards – South Africa: S. Cape Prov
- Plectranthus macilentus Hedge – Madagascar
- Plectranthus malvinus van Jaarsv. & T.J.Edwards – South Africa: E. Cape Prov
- Plectranthus mandalensis Baker – Malawi, Mozambique
- Plectranthus membranaceus Hedge – Madagascar
- Plectranthus mocquerysii Briq. – Madagascar
- Plectranthus mzimvubuensis van Jaarsv. – South Africa: SE. Cape Prov
- Plectranthus oblanceolatus Hedge – Madagascar
- Plectranthus oertendahlii T.C.E.Fr. – South Africa: S. KwaZulu-Natal
- Plectranthus ombrophilus Hedge – Madagascar
- Plectranthus oribiensis Codd – South Africa: KwaZulu-Natal
- Plectranthus papilionaceus Ranir. & Phillipson – Madagascar
- Plectranthus pichompae Hedge – Madagascar
- Plectranthus praetermissus Codd – South Africa: SE. Cape Prov
- Plectranthus purpuratus Harv. – South Africa
- Plectranthus reflexus van Jaarsv. & T.J.Edwards – South Africa: SE. Cape Prov
- Plectranthus rosulatus Hedge – NW. Madagascar
- Plectranthus rubropunctatus Codd – South Africa: Limpopo to Swaziland
- Plectranthus rubroviolaceus Hedge – Madagascar
- Plectranthus saccatus Benth. – South Africa: SE. Cape Prov. to KwaZulu-Natal
- Plectranthus scaposus Hedge – Madagascar
- Plectranthus secundiflorus Hedge – Tanzania
- Plectranthus strangulatus A.J.Paton – Tanzania
- Plectranthus strigosus Benth. ex E.Mey. – South Africa: S. Cape Prov
- Plectranthus stylesii T.J.Edwards – South Africa: Eastern Cape Prov
- Plectranthus swynnertonii S.Moore – S. Trop. Africa to South Africa, Mpumalanga
- Plectranthus trilobus Hedge – Madagascar
- Plectranthus verticillatus Druce – S. Mozambique to South Africa
- Plectranthus vestitus Benth. – Madagascar
- Plectranthus vinaceus Hedge – Madagascar
- Plectranthus zuluensis T.Cooke – South Africa: SE. Cape Prov. to Swaziland
Transferred to ''Coleus''
- Plectranthus amboinicus Spreng. → Coleus amboinicus
- Plectranthus argentatus S.T.Blake → Coleus argentatus
- Plectranthus barbatus Andrews → Coleus barbatus
- Plectranthus caninus Roth → Coleus caninus
- Plectranthus cataractarum B.J.Pollard → Coleus cataractarum
- Plectranthus cremnus B.J.Conn → Coleus cremnus
- Plectranthus dissitiflorus J.K.Morton → Coleus dissitiflorus
- Plectranthus edulis Agnew → Coleus maculosus subsp. edulis
- Plectranthus esculentus N.E.Br. → Coleus esculentus
- Plectranthus graveolens R.Br. → Coleus graveolens
- Plectranthus neochilus Schltr. → Coleus neochilus
- Plectranthus ornatus Codd → Coleus comosus
- Plectranthus parviflorus Willd. → Coleus australis
- Plectranthus rotundifolius Spreng. → Coleus rotundifolius
- Plectranthus scutellarioides R.Br. → Coleus scutellarioides
- Plectranthus socotranus Radcl.-Sm. → Coleus socotranus
- Plectranthus unguentarius Codd → Coleus unguentarius
- Plectranthus welwitschii Codd → Coleus fredericii
Formerly described as ''Plectranthus''
- Anisochilus carnosus Wall. ex Benth.
- Isodon coetsa Kudô
- Isodon inflexus Kudô
- Isodon lophanthoides H.Hara
- Isodon rugosus Codd
- Isodon sculponeatus Kudô
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