Plumbago auriculata

Plumbago auriculata
Plumbago auriculata
Scientific classification
Kingdom:Plantae
Clade:Angiosperms
Clade:Eudicots
Order:Caryophyllales
Family:Plumbaginaceae
Genus:Plumbago
Species: P. auriculata
Binomial name
Plumbago auriculata
Synonyms[1]
  • Plumbagidium auriculatum (Lam.) Spach
  • Plumbago capensis Thunb.
  • Plumbago capensis Willd.
Plumbago auriculata

Plumbago auriculata (common names blue plumbago, Cape plumbago or Cape leadwort), syn. P. capensis, is a species of flowering plant in the family Plumbaginaceae, native to South Africa.[2][3]

It is an evergreen shrub, often grown as a climber, ascending rapidly to 6 m (20 ft) tall by 3 m (10 ft) wide in nature, though much smaller when cultivated as a houseplant.[4] It has light blue to blue flowers and also variations with white (P. auriculata var. alba) or deep blue (P. auriculata 'Royal cape') flowers. The leaves are a glossy green and grow to 5 cm (2 in) long.[2][3] Plumbago grow best in full sun to part shade.

The specific epithet auriculata means "with ears", referring to the shape of the leaves.[5]

Medicinal uses and phytochemistry

Plumbago auriculata is a medicinal herb plant. The name has a root from the Latin word plumbum, meaning lead, because it has some pharmaceutical effects for lead poisoning (Asha Saji, V. T. Antony,2015) . Also it is used as a phytoremediator for lead and cadmium.

Many secondary metabolites have been discovered and isolated from Plumbago auriculata such as Plumbagin, palmitic acids.[6]

Cultivation

In temperate regions it may be grown outside in frost free areas, otherwise under glass. The species[7] and the white-flowered form P. auriculata f. alba[8] have both gained the Royal Horticultural Society's Award of Garden Merit.[9]

Plumbago auriculata can be propagated sexually by seeds and asexually by cutting in summer. It needs well-aerated soil and light and prefers acidic soil.

References

  1. ↑ "Plumbago auriculata". The Plant List. Retrieved 2018-01-27.
  2. 1 2 "Botanica. The Illustrated AZ of over 10000 garden plants and how to cultivate them", p 691. Könemann, 2004. ISBN 3-8331-1253-0
  3. 1 2 Nico Vermeulen:"The Complete Encyclopedia of Container Plants", p. 216. Rebo International, Netherlands, 1998. ISBN 90-366-1584-4
  4. ↑ RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1405332964.
  5. ↑ Harrison, Lorraine (2012). RHS Latin for gardeners. United Kingdom: Mitchell Beazley. p. 224. ISBN 9781845337315.
  6. ↑ de Paiva, Selma Ribeiro; Figueiredo, Maria Raquel; Kaplan, Maria Auxiliadora Coelho (2005-07-01). "Isolation of secondary metabolites from roots of Plumbago auriculata Lam. by countercurrent chromatography". Phytochemical Analysis. 16 (4): 278–281. doi:10.1002/pca.841. ISSN 1099-1565.
  7. ↑ "RHS Plant Selector - Plumbago auriculata". Retrieved 28 May 2013.
  8. ↑ "RHS Plant Selector - Plumbago auriculata f. alba". Retrieved 28 May 2013.
  9. ↑ "AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 80. Retrieved 7 May 2018.


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