Euphorbia horrida

Euphorbia horrida, the African milk barrel, is a species of flowering plant in the family Euphorbiaceae, native to South Africa. It is a cactus-like shrub showing remarkable similarities to the true cacti of the New World, and thus an example of convergent evolution.[1] Growing to 1.5 m (4 ft 11 in), it has blue-green, heavily ridged spiny stems carrying solitary green flowers in summer. In temperate regions it must be grown in heated conditions under glass.

Euphorbia horrida
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malpighiales
Family: Euphorbiaceae
Genus: Euphorbia
Species:
E. horrida
Binomial name
Euphorbia horrida

It develops new shoots laterally at the base of the plant (offset)s, often forming roots and thus a successful means of propagation.

The Latin specific epithet horrida means "with many prickles".[2]

This plant has gained the Royal Horticultural Society's Award of Garden Merit.[3][4]

References
  1. "Cactus art - Euphorbia horrida". Retrieved 19 June 2013.
  2. Harrison, Lorraine (2012). RHS Latin for gardeners. United Kingdom: Mitchell Beazley. p. 224. ISBN 9781845337315.
  3. "RHS Plant Selector - Euphorbia horrida". Retrieved 23 June 2020.
  4. "AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 38. Retrieved 25 February 2018.

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