Cronartium

Cronartium is a genus of rust fungi in the family Cronartiaceae.

They are heteroecious rusts with two alternating hosts, typically a pine and a flowering plant, and up to five spore stages. Many of the species are plant diseases of major economic importance, causing significant damage. Species, hosts and natural distribution Cronartium appalachianum: Pinus virginiana, Santalaceae. Eastern North America. Cronartium arizonicum: Pinus ponderosa and related pines, Scrophulariaceae. Western North America. Cronartium comandrae: Pinus subgenus Pinus, Santalaceae. North America. Cronartium comptoniae: Pinus subgenus Pinus, Myricaceae. North America. Cronartium conigenum: Pinus subgenus Pinus, Fagaceae. Southwestern North America. Cronartium flaccidum: Pinus subgenus Pinus, several families. Europe, Asia. Cronartium occidentale: Strobus subgenus Strobus, Saxifragaceae. Southwestern North America. Cronartium orientale: Pinus subgenus Pinus Quercus. Japan. Cronartium quercuum: Pinus subgenus Pinus, Fagaceae. North America, Asia. Cronartium ribicola: Pinus subgenus Strobus, Grossulariaceae. Europe, Asia. Cronartium stalactiforme: Pinus subgenus Pinus, Scrophulariaceae. North America. Cronartium strobilinum: Pinus subgenus Pinus, Fagaceae. Southeastern North America.