Nicotiana glauca

Nicotiana glauca

Biggest Plant Dictionary | Nicotiana glauca | Tree tobacco is native to South America but it is now widespread as an introduced species on other continents.

Euphorbia milii

Euphorbia milii

Biggest Plant Dictionary | Euphorbia milii | Euphorbia milii (Crown-of-thorns or Christ Plant) is a woody, succulent species of Euphorbia  native to Madagascar. The species name commemorates Baron Milius, once governor of Réunion, who introduced the species to France in 1821.

Catharanthus roseus

Catharanthus roseus

Biggest Plant Dictionary | Catharanthus roseus | It is an evergreen subshrub or herbaceous plant growing to 1 m tall. The leaves are oval to oblong, 2.5–9 cm long and 1–3.5 cm broad, glossy green, hairless, with a pale midrib and a short petiole 1–1.8 cm long; they are arranged in opposite pairs.

Nicotiana tabacum

Nicotiana tabacum

Biggest Plant Dictionary | Nicotiana tabacum  | Nicotiana tabacum or tobacco, a native of Tropical America is the plant that is cultivated as the principal source of tobacco.

Pistia stratiotes

Pistia stratiotes 

Biggest Plant Dictionary | Pistia stratiotes | Rivers (2002) notes that for P. stratiotes to survive, it requires a wet, temperate habitat. It is usually found in lakes and rivers, however, it can survive in mud.