Synonyms: Cronartium harknessii, Peridermium cerebroides, Peridermium harknessii.
Common name: Pine-pine Gall Rust.
Extract from Wikipedia article: Pine-pine gall rust, also known as western gall rust, is a fungal disease of pine trees. This plant disease is caused by Endocronartium harknessii (asexual name is Peridermium harknessii), an autoecious, endocyclic, rust fungus that grows in the vascular cambium of the host. Pine-pine gall rust is found on pine trees (Pinus spp.) with two or three needles such as ponderosa pine, jack pine, and scots pine. The disease is very similar to pine-oak gall rust, but its second host is another Pinus species. The fungal infection results in gall formation on branches or trunks of infected hosts. Gall formation is typically not detrimental to old trees but has been known to kill younger less stable saplings. Galls can vary from small growths on branch extremities to grapefruit sized galls on trunks.
Pine-pine gall rust (Endocronartium harknessii rust fungus) on a swollen root at the base of a pine in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, March 10, 2019
Big Creek Trail, Shepherd, TX 77371, USA
Close up of pine-pine gall rust (Endocronartium harknessii rust fungus) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, March 10, 2019Big Creek Trail, Shepherd, TX 77371, USA
Swollen pine root with pine-pine gall rust (Endocronartium harknessii rust fungus) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, March 10, 2019Big Creek Trail, Shepherd, TX 77371, USA
Partially dissected swollen pine root with pine-pine gall rust (Endocronartium harknessii rust fungus) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, March 10, 2019Big Creek Trail, Shepherd, TX 77371, USA
Pine-pine gall rust (Endocronartium harknessii rust fungus) on Four Notch Loop Trail of Sam Houston National Forest near Huntsville. Texas, March 23, 2019Lone Star Hiking Trail, Huntsville, TX 77340, USAMushroom Observer and Facebook for learning names of local mushrooms.
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