E-Flora BC: Electronic Atlas of the Flora of British Columbia

Summary:
Naohidemyces is included as an example of the Uredinales (rust fungi). The rust fungi all grow on vascular plants, and often have very narrow host ranges. They do not have basidium producing fruitbodies, because basidia are produced from overwintering spores. There are up to five different types of spores specialized for different parts of the life cycle, and often two separate hosts that are taxonomically unrelated to each other. Naohidemyces vaccinii in BC has hemlock as one host (the aecial host), and the other host (the telial host) is blueberry, huckleberry, dwarf bilberry, grouseberry, or lingonberry.

not specified but includes BC

Microscopic:
spermogonia on the underside of needles, subcuticular, without bounding structure, 80-150 microns in diameter and up to 70 microns high