Uraecium extensum (Arthur) Cummins 1956

Pileolaria extensa Arthur, sp. nov
Pycnia amphigenous, thickiy scattered over large areas, preceding or among the uredinia, papillose, honey-yellow becoming blackish, subcuticular, flattened-hemispherical, 75-100," broad, half as high.
Uredinia amphigenous and caulicolous, eveniy and thickiy effused over young shoots and leaves, causing more or less atrophy, crowded, round, small, 0.25 mm. across, early naked, exceedingly pulverulent, dark cinnamon-brown, ruptured epidermis inconspicuous ; urediniospores fusiform-ellipsoid or fusiform-obovate, 16-24 by 28-38//, obtuse or sometimes acute at both ends; wall dark golden-brown, often semihyaline both at apex and below, thick, 3-3.5//, thicker above 4-7 [i, verrucose with low tubercles, not crowded, liaving a tendency to be arranged in longitudinal rows, pores small, obscure, probably 3,
equatorial .

Uraecium extensum je grzib, co go nojprzōd ôpisoł Joseph Charles Arthur, a terŏźnõ nazwã doł mu George Baker Cummins 1956. Uraecium extensum nŏleży do zorty Uraecium, rzyndu Pucciniales, klasy Pucciniomycetes, grōmady Basidiomycota i krōlestwa grzibōw. Żŏdne podgatōnki niy sōm wymianowane we Catalogue of Life.