Euphorbia subg. Poinsettia 1858, but promoted to subgenus rank by Homer Doliver House in 1924. Recent studies have confirmed its monophyly. Its many species include: The common name "wild poinsettia" is sometimes applied to two of these species. Euphorbia subg. Poinsettia Euphorbia" subg. "Poinsettia is a subgenus deriving from the genus "Euphorbia", and is endemic to North America. <nowiki> </nowiki>It contains around 24 species, of which the best known is "E. pulcherrima", the poinsettia. This species grows wild in the mountains on the Pacific slope of Mexico, and despite many legends, no one is quite sure from which wild populations the cultivated varieties
Solar power by country in China. The Sarnia plant covers and contains about 966,000 square metres (96.6 ha), which is about 1.3 million thin film panels. The expected annual energy yield is about 120,000 MW·h, which if produced in a coal-fired plant would require emission of 39,000 tonnes of CO per year. Canada has many regions that are sparsely populated and difficult to access, but also does not have optimal access to sunlight given the high latitudes of much of the country. Photovoltaic cells are increasingly used as standalone units, mostly as off-grid distributed electricity generation to power remote homes, telecommunications equipment, oil and