A third variety of jalap known as woody jalap, male jalap, or Orizaba root, or by the Mexicans as Purgo macho, is derived from Ipomaea orizabensis, a plant of Orizaba.
The only representative of this family is Xenosaurus grandis, recorded from the mountains of Orizaba, Cordoba and Oaxaca.
This range extends south-eastward along the western frontier of Vera Cruz (state) and includes the snow-capped cone of Orizaba or Citlaltepetl, (18,209 ft.), and the Cofre de Perote, or Nanchampapetl (13,419 ft.).
Orizaba is sometimes included among the semi-active volcanoes, but this is a mistake.
The principal cities of Mexico, other than the capitals above mentioned, are as follows, the populations being those of 1900 except when otherwise stated: Acapulco (pop. 4932), a famous port on the Pacific coast in Guerrero, which was wrecked by the earthquake of 1909; Carmen, or Laguna de Terminos (about 6000), a thriving commercial town and port on the Gulf coast in Campeche; Celaya (2 5,5 6 5), a railway centre and manufacturing town of Guanajuato; Ciudad Guzman, or Zapotlan (about 17,500), an interesting old town of Jalisco; Cholula (about 9000), an ancient native town of Puebla, widely known for its great pyramid; Comitan (9316), the commercial centre of Chiapas; Cordoba (7974 in 1895), a picturesque Spanish town in the sierras of Vera Cruz; Cuautla (6269), the centre of a rich sugar-producing district of Morelos; Guaymas (8648), a flourishing port of Sonora on the Gulf of California; Leon (62,623), the largest city in Guanajuato and distinguished for its commercial activity, manufactures and wealth; Linares (20,690), the second city of Nuevo Leon in size and importance; Matamoros (8347), a prominent commercial centre and river port of Tamaulipas; Mazatlan (17,852), the foremost Mexican port on the Pacific coast; Orizaba (32,894), a city of Vera Cruz famous for its delightful climate and picturesque surroundings; Parral (14,748), a well-known mining centre of southern Chihuahua; San Cristobal (about 16,00o), once capital of Chiapas and rich in historical associations; Tampico (16,313), a Gulf port and railway terminus of Tamaulipas; Tehuantepec (10,386), the largest town on the Tehuantepec railway in Oaxaca; Vera Cruz (29,164), the oldest and best known Gulf port of Mexico.