Orange Jelly Fungus

Tremella aurantia is a parasite of Stereum species and typically fruits with its host on hardwoods usually with intact bark. Usually fruits on crust fungus.
Dacrymyces chrysospermus is a yellow-orange jelly fungus which closely mimics Tremella aurantia, the common witch's butter. The two taxa are best told apart in the field by differences in habit and substrate. Tremella aurantia is a parasite of Stereum species and typically fruits with its host on hardwoods usually with intact bark. In contrast, Dacrymyces chrysospermus occurs on decorticated (bark removed) conifer wood and is not associated with Stereum species.
(de·cor·ti·cate  -  dēˈkôrdəˌkāt/)

On a leaf.

Backside of the leaf.