Orange telia (spore-forming bodies) of stalactiform rust, Peridermium stalactiforme =Cronartium coleosporioides, on Indian paintbrush.

Groups of orange, spore-forming bodies on a leaf of Indian paintbrush, an alternate host of stalactiform rust of yellow (two- or three-needle) pines. Credit: USDA Forest Service, Northern and Intermountain Region, Bugwood.org
Credit: USDA Forest Service, Northern and Intermountain Region, Bugwood.org