Plectranthus hadiensis

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Plectranthus hadiensis
Plectranthus tomentosa white background.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Lamiaceae
Genus: Plectranthus
Species:
P. hadiensis
Binomial name
Plectranthus hadiensis
Synonyms [1]
  • Ocimum hadienseForssk.
  • Coleus forsskaoliiBriq.
  • Coleus personatusLem.
  • Coleus rupestrisHochst. ex Briq.
  • Coleus schweinfurthiiVatke
  • Coleus zeylanicus(Benth.) L.H.Cramer
  • Germanea forsskaoliiPoir.
  • Germanea horridaHiern
  • Majana forsskaolii(Poir.) Kuntze
  • Plectranthus cyaneusGürke
  • Plectranthus draconisBriq.
  • Plectranthus erlangeriGürke
  • Plectranthus forsskaoliiVahl
  • Plectranthus fragransLebrun & Touss.
  • Plectranthus hararensisGürke
  • Plectranthus horridus(Hiern) Baker
  • Plectranthus madagascariensis var. ramosiorBenth.
  • Plectranthus pachyphyllusGürke ex T.Cooke
  • Plectranthus paucicrenatusFranch.
  • Plectranthus petrensisS.Moore
  • Plectranthus ramosior(Benth.) van Jaarsv.
  • Plectranthus rupestrisVatke ex Baker
  • Plectranthus tomentosusBenth.
  • Plectranthus woodiiGürke
  • Plectranthus zatarhendi var. tomentosus(Benth.) Codd
  • Plectranthus zatarhendi var. woodii(Gürke) Codd
  • Plectranthus zatarhendii var. zatarhendii
  • Plectranthus zeylanicusBenth.

Plectranthus hadiensis is a perennial herbaceous plant of the family Lamiaceae.

Description

Plectranthus hadiensis is a perennial herbaceous shrub with pubescent and semi-succulent stems, and a straight to decumbent habit. Its height varies 50 cm to 1.5 m (30–59 in), with a maximum base diameter of 1m (39 in). The leaves of the plant are arranged alternately on the plant's stem, they have coarse textures; an ovate shape; densely woolly-tomentose; are apex acute to rounded, cuneate with subcordate base; and a superficial to fairly crenate-dentate margin. The petiole is 10 to 40 mm long. The terminal inflorescences of the plant are simple and have 1 to 2 pairs of lateral branches near the base. The flowers of the plant are generally in shades of mauve to purple (occasionally white), and are bilabiated with a tube-shaped corolla of 8 to 15 mm that widens from the base, finely pubescent and with glands on the lips.

There are three varieties of P. hadiensis:

Distribution and habitat

The species is found in Transkei, Natal, Eswatini, the Transvaal, eastern tropical Africa, Somalia and the southern Arabian Peninsula. The plant can be found on the fringes of forests, in dry forests and amongst rocks in grasslands and lowlands. [2]

Cultivation and uses

Plectranthus hadiensis is widely used as an ornamental plant because it is easy to cultivate, propagate and maintain. The compounds of the plant were formerly used to poison fish and more traditionally as an enema. It is used to ward off evil spirits. In Uganda it is used to heal wounds and peptic ulcers

Properties

The plant's use as a pharmacological agent is being investigated as it contains large quantities of essential oils, it is also being investigated for use against respiratory infections.[ citation needed ] However, ointments made with compounds extracted from the plant must not contain menthol, camphor or eucalyptus. [3]

Taxonomy

Plectranthus hadiensis was discovered by Peter Forsskål in Hadiyah, Yemen. It was described in Flora of Egypt and Arabia in 1775 with the name Ocimum hadiensis. At that time the genus Plectranthus had not been established, however it was the first species of the genus described and in 1894 the botanists Schweinfurth and Sprenger transferred it to the new genus, publishing it in Wiener Illustrirte Garten-Zeitung 19: 2. 1894. [4]

Related Research Articles

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<i>Millettia grandis</i> Species of legume

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<span class="mw-page-title-main">KwaZulu-Natal Dune Forest</span> Subtropical forest type from the coastal dunes of KwaZulu-Natal, South Afric

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<i>Searsia chirindensis</i>

Searsia chirindensis is a medium-sized, semi-deciduous, trifoliate Southern African dioecious tree of up to 10 m tall, rarely 20 m, often multi-stemmed, occurring along the coastal belt from the Cape, through KwaZulu/Natal, Eswatini, Zimbabwe and Mozambique as far north as Tanzania, and growing in a wide variety of habitats such as open woodlands, in forests, along forest margins, in the open, among rocks and on mountain slopes. It was named by Swynnerton from a specimen collected by him near the Chirinda Forest in the Chipinge District of Southern Rhodesia. This is one of more than a hundred southern African species in the genus. It is commonly known as red currant because of a fancied resemblance of the fruit to that of the European redcurrant.

Branches dull brown or blackish, cylindric, pubescent or glabrous. Petiole 1·5–6·5 cm. long, almost cylindric, narrowly canaliculate and marginate above, pubescent or glabrous. Leaflets ± dull red-brown, ovate or ovate-lanceolate, acuminate, entire and ± undulate at the margin, membranous to ± rigid or subcoriaceous, glabrous or ± pubescent on the margin, midrib and nerves; median leaflet (3)6–13(16) × (1·2)2·5–4(7) cm., cuneate and frequently petiolulate at the base, the lateral ones (2)2·5–7(12) × (0·8)1·3–3·5(5·5) cm., asymmetric and slightly cuneate or somewhat rounded at the base, very shortly petiolulate to sessile; midrib slightly raised in the upper surface, very prominent below; lateral nerves arcuate, slender, raised on both sides, reticulation lax, almost invisible or sometimes conspicuous. Panicles terminal and axillary, ample, pyramidal, much branched, multiflorous, the terminal ones longer than the leaves, the axillary ones as long as the latter or somewhat longer; pedicels 1–2·5 mm. long. Male flowers: calyx-segments 0·5 mm. long, ovate, obtuse, glabrous; petals c. 1·5 mm. long, elliptic, obtuse; filaments c. 1 mm. long. Female flowers: ovary ovoid; styles reflexed; disk cupuliform, 5-lobulate; staminodes present. Drupe pinkish-yellow to reddish-brown, shining, (4)5(6) mm. in diam., globose, glabrous.

<i>Cnestis polyphylla</i> Species of flowering plant in the family Connaraceae

Cnestis polyphylla, or itch pod, is a liane or scrambling shrub belonging to the family Connaraceae and occurring south from Kenya in East Tropical Africa through Mozambique and Zimbabwe to Southern Africa where it is found in coastal and escarpment forest in Limpopo, Mpumalanga, Eswatini and KwaZulu-Natal, and further south to the Eastern Cape. It also grows on the Indian Ocean islands of Madagascar, Mauritius and Réunion. The genus has at least 13 species with many still unresolved. They are distributed mainly in tropical Africa and nearby islands, but extend to SE Asia and China.

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<i>Plectranthus ecklonii</i> Species of shrub

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Plectranthus purpuratus or cliff spurflower is a species of flowering plant in the family Lamiaceae, native to South Africa's Kwazulu-Natal and Mpumalanga provinces, as well as eSwatini. The name is frequently misapplied to Plectranthus ciliatus, presumably because both have purple-backed leaves.

<i>Hewittia malabarica</i> Species of flowering plant

Hewittia malabarica is a flowering plant in the monotypic genus HewittiaWight & Arn., belonging to the family Convolvulaceae and widespread throughout tropical Africa, Asia, and Polynesia. It is a climbing or prostrate perennial herb with slender stems and flowers that are pale yellow, cream, or white with a purple center, and large leaves that can be used as a cooked vegetable or used in folk medicine with the roots. The stems can be used to make ropes.

References

  1. "Plectranthus hadiensis". The Plant List . Retrieved 1 December 2020.
  2. JSTOR
  3. Kim, Ki Woo (2013). "Ambient Variable Pressure Field Emission Scanning Electron Microscopy for Trichome Profiling of Plectranthus tomentosa by Secondary Electron Imaging". Applied Microscopy. 43: 34–39. doi: 10.9729/AM.2013.43.1.34 .
  4. "Plectranthus hadiensis". Tropicos.org. Missouri Botanical Garden . Retrieved 18 October 2014.

Bibliography

  1. AFPD. 2008. African Flowering Plants Database - Base de Donnees des Plantes a Fleurs D'Afrique.