Euphorbia milii, the crown of thorns, Christ plant, or Christ's thorn, is a species of flowering plant in the spurge family Euphorbiaceae, native to Madagascar. The species name commemorates Baron Milius, once Governor of Réunion, who introduced the species to France in 1821.
The Deccan thorn scrub forests are a xeric shrubland ecoregion of south India and northern Sri Lanka. Historically this area was covered by tropical dry deciduous forest, but this only remains in isolated fragments. The vegetation now consists of mainly of southern tropical thorn scrub type forests. These consist of open woodland with thorny trees with short trunks and low, branching crowns; spiny and xerophytic shrubs; and dry grassland. This is the habitat of the great Indian bustard and blackbuck, though these and other animals are declining in numbers; this area was at one time home to large numbers of elephants and tigers. Almost 350 species of bird have been recorded here. The remaining natural habitat is threatened by overgrazing and invasive weeds, but there are a number of small protected areas which provide a haven for the wildlife. Trees in these forests have adapted to not require much water.
Euphorbia alfredii is a species of plant in the family Euphorbiaceae. It is endemic to Madagascar. Its natural habitats are subtropical or tropical dry forests, subtropical or tropical dry shrubland, and rocky areas. It is threatened by habitat loss.
Euphorbia ankarensis is a species of plant in the family Euphorbiaceae. It is endemic to Madagascar. Its natural habitat is rocky areas. It is threatened by habitat loss.
Euphorbia banae is a species of plant in the family Euphorbiaceae. It is endemic to Madagascar. Its natural habitat is subtropical or tropical dry shrubland. It is threatened by habitat loss.
Euphorbia beharensis is a species of plant in the family Euphorbiaceae. It is endemic to Madagascar. Its natural habitats are subtropical or tropical dry forests and subtropical or tropical dry shrubland. It is threatened by habitat loss.
Euphorbia cap-saintemariensis is a species of plant in the family Euphorbiaceae. It is endemic to Madagascar. Its natural habitat is rocky areas. It is threatened by habitat loss.
Euphorbia cylindrifolia is a species of plant in the family Euphorbiaceae. It is endemic to Madagascar. Its natural habitats are subtropical or tropical dry forests and subtropical or tropical dry shrubland. It is threatened by habitat loss.
Euphorbia horombensis is a species of plant in the family Euphorbiaceae. It is endemic to Madagascar. Its natural habitat is rocky areas. It is threatened by habitat loss.
Euphorbia imerina is a species of plant in the family Euphorbiaceae. It is endemic to Madagascar. Its natural habitat is rocky areas. It is threatened by habitat loss.
Euphorbia leistneri is a species of succulent plant in the family Euphorbiaceae. It is endemic to northwest-Namibia and southwest-Angola near the Kunene river. Its natural habitat is subtropical or tropical dry shrubland. It is threatened by habitat loss. Euphorbia leistneri is closely related to Euphorbia monteiri.
Euphorbia lophogona is a species of plant in the family Euphorbiaceae. It is endemic to Madagascar. Its natural habitat is subtropical or tropical dry forests. It is threatened by habitat loss. It is popular as a houseplant due to its resiliency.
Euphorbia neobosseri is a species of plant in the family Euphorbiaceae It is endemic to Madagascar. Its natural habitats are subtropical or tropical dry forests and subtropical or tropical dry shrubland. It is threatened by habitat loss.
Euphorbia pachypodioides is a species of plant in the family Euphorbiaceae. It is endemic to Madagascar. Its natural habitat is rocky areas. It is threatened by habitat loss. It also has the binomial synonym Euphorbia antankara.
Euphorbia perrieri is a species of plant in the family Euphorbiaceae. It is endemic to Madagascar. Its natural habitat is subtropical or tropical dry forests. It is threatened by habitat loss.
Euphorbia platyclada is a species of plant in the family Euphorbiaceae. It is endemic to Madagascar. Its natural habitat is subtropical or tropical dry forests. It is threatened by habitat loss.
Euphorbia primulifolia is a species of plant in the family Euphorbiaceae. It is endemic to Madagascar. Its natural habitats are subtropical or tropical seasonally wet or flooded lowland grassland, subtropical or tropical high-altitude grassland, and rocky areas.this plant smells. It is threatened by habitat loss.
Euphorbia rossii is a species of plant in the family Euphorbiaceae. It is endemic to Madagascar. Its natural habitat is rocky areas. It is threatened by habitat loss. It has reddish-yellow cyathia.
Euphorbia tulearensis is a species of plant in the family Euphorbiaceae. It is endemic to Madagascar. Its natural habitat is rocky areas. It is threatened by habitat loss.
Opuntia monacantha, commonly known as drooping prickly pear, cochineal prickly pear, or Barbary fig, is a species of plant in the family Cactaceae native to South America.
