Question: Between Vinca and Dieffenbachia, which genus has range that extends further north?
Context: Diachrysia chrysitis, the burnished brass, is a species of moth of the family Noctuidae.  It is found in Europe, the Caucasus, Russia, Russian Far East and Siberia.  In the south of Europe the range extends to southern Spain, southern Italy and the Balkan peninsula.  It is lacking on most of the Greek Islands.  In the north it extends into almost to the Arctic circle and far north Russia.  In the east the range extends to the Amur region and Japan. The Cookes Range (Cooke's Range, Cooks Range or Cook's Range) is a small, 17-mi (27 km) long mountain range in northern Luna County, New Mexico, which extends slightly north into southeastern Grant County.  The range is a southern continuation of the Mimbres Mountains, itself the southeast portion of the extensive north-south running Black Range.  The Cooks Range is surrounded by lower elevation areas of the northwest Chihuahuan Desert. Vinca ( ; Latin: "vincire" "to bind, fetter") is a genus of flowering plants in the family Apocynaceae, native to Europe, northwest Africa and southwest Asia.  The English name periwinkle is shared with the related genus "Catharanthus" (and also with the common seashore mollusc, "Littorina littorea"). The Serranía del Baudó is a coastal mountain range on the Pacific coast of Colombia.  It is separated from the West Andes by the Atrato valley where the Atrato River flows and Quibdó is located.  From the south the range extends from the Baudó River north and slightly west along the coast into Panama terminating at the Golfo de San Miguel.  The range is called Serranía del Sapo when it is in Panama.  Technically the landform extends south of the Baudó River down to Malaga Bay, but the area has been eroded into low hills and marshlands. Dieffenbachia is a genus of tropical flowering plants in the family Araceae.  It is native to the New World Tropics from Mexico and the West Indies south to Argentina.  Some species are widely cultivated as ornamental plants, especially as houseplants, and have become naturalized on a few tropical islands. The viceroy ("Limenitis archippus") is a North American butterfly that ranges through most of the contiguous United States as well as parts of Canada and Mexico.  The westernmost portion of its range extends from the Northwest Territories along the eastern edges of the Cascade Range and Sierra Nevada mountains, southwards into central Mexico.  Its easternmost range extends along the Atlantic and Gulf coasts of North America from Nova Scotia into Texas. Scopula ternata, the smoky wave, is a moth of the family Geometridae.  It was described by Schrank in 1802.  It is mainly found in Northern and parts of Central Europe and in isolated populations in Southern and South-Eastern Europe.  Its western range is Eastern France, Eastern Belgium and Scotland, with an isolated population in the Pyrenees.  In the North its range extends to the polar regions and in the South it is found up to the Alps.  Its Eastern range extends through Central and North Russia up to the Ural, through Siberia up to the Yenisei River. Poeciliopsis is a genus of poeciliid fishes that primarily are native to Mexico and Central America.  The only exceptions are "P. turrubarensis" where the range extends into Colombia, and "P. occidentalis" where the range extends into Arizona and New Mexico, and "P. gracilis" which has been accidentally introduced into fast flowing drainage ditches that flow into the north-eastern end of the Salton Sea in California. Levenhookia, also known as the styleworts, is a genus of ten recognized species in the family Stylidiaceae and is endemic to Australia.  The genus is restricted to Western Australia almost exclusively with a few exceptions: "L. pusilla"<nowiki>'</nowiki>s range extends into South Australia, "L. dubia"<nowiki>'</nowiki>s range extends through South Australia into Victoria and New South Wales, "L. sonderi" is native only to Victoria, and "L. chippendalei" is also found in the Northern Territory. The Elkhead Mountains are a mountain range in Colorado.  The mountain range is considered to be low altitude within Colorado as the mountains are under 11000 ft .  Located within Routt and Moffat counties, the mountain range is far from metropolitan areas and has few lakes and streams, so it attracts few visitors.  The mountain range is a volcanic range and all of the peaks were formed by volcanic action.  The mountain range extends approximately 16 mi east to west and 10 mi north to south, and its center is located at , approximately 20 mi northeast of Craig and north of Hayden, Colorado 13 mi south of the Wyoming border.  Almost all of the peaks within the Elkhead Mountains are a part of Routt National Forest.  Significant peaks are: Bears Ears, Sugar Loaf, Saddle Mountain, Black Mountain, Pilot Knob, and Meaden Peak.
Answer: Vinca