Uredo morvernensis Dennis, 1983
Only uredinia are known. They are hypophyllous, inconspicuous and very pale brown.
Lamiaceae, narrowly monophagous
Thymus praecox subsp. polytrichus.
it might concern an only rarely appearing stage of Puccinia thymi (Nigel Stringer in litt.)
Henderson (2004a), Woods, Stringer, Evans & Chater (2015a).