 romneya sunset western garden book, 1995:606â607 is a genus of flowering plants belonging to the poppy family (papaveraceae). there are two species in genus romneya, which was named for irish astronomer john thomas romney robinson.jepson manual treatment they are known commonly as matilija poppies ( ) or tree poppies and are native to southern california and northern mexico. they are perennial subshrubs with woody stems. they may grow to a height of  and a width of , with the flowers up to  across. the silvery green leaves are deeply cut, with a small fringe of hairs at the margins. they are notable for their large white flowers with intense yellow centers, blooming in summer. romneya produce the largest flowers of any members of the poppy family.flora of north america these flowers prefer a warm, sunny spot and fertile soil with good water drainage. they are not easily grown but once established are difficult to remove. in the wild, they are known as "fire followers" as they can be frequently, but not exclusively, found in burned areas.quinn, ronald d. and keeley, sterling, c. (2006). introduction to california chaparral. berkeley: university of california press. p. 145. it is also known as the "fried egg flower" or "fried egg plant".gutierrez, mary (2013), matilija poppy. in northwest garden news, online edition. accessed 5 july 2013.  the two species are: * romneya coulteri harv. - coulter's matilija poppy * romneya trichocalyx eastw. - bristly matilija poppy. some consider this a variety of romneya coulteri, but it is accepted in recent manuals. == references ==  ==external links== *california native plant society: romneya coulteri *california native plant society: romneya trichocalyx *usda plants profile
Flora_of_Baja_California Flora_of_California Flowers Papaveraceae Papaveraceae_genera