Bursaria spinosa spinosa" was first described by Antonio José Cavanilles in 1797. It is known by many common names, including Australian blackthorn, blackthorn, Christmas bush, mock orange, native blackthorn, native box, native olive, prickly box, prickly pine, spiny box, spiny bursaria, sweet bursaria, thorn box and whitethorn. Summer flowering has given rise to the name (Tasmanian) Christmas bush in Tasmania and South Australia (not to be confused with "Prostanthera lasianthos"). Indigenous names recorded include "kurwan" in Coranderrk, Victoria, and "geapga" from Lake Hindmarsh Station. "Bursaria spinosa" is highly variable in appearance and habit, as are other species within the genus, and there
Prunus pseudocerasus has been cultivated for its edible (if tart) fruit for around 2000 years. In Japan it is favored as an ornamental tree for its tendency to bloom, flowers before leaves, earlier than the Japanese cherry "Prunus serrulata". A tetraploid with 2n=32 chromosomes, it is used as rootstock for other flowering cherries. It is the parent of a number of hybrid cultivars. It is resistant to the fungal disease cherry leaf spot. Prunus pseudocerasus Prunus pseudocerasus or Prunus pseudo-cerasus, the Chinese sour cherry or just Chinese cherry, is a species of cherry native to China and is used worldwide as an