Puccinia pygmaea Erikss. 1895

Foodplant / parasite
amphigenous telium of Puccinia pygmaea var. ammophilina parasitises live leaf of Ammophila arenaria

Dicaeoma pygmaeum (Eriksson) Arthur & Fromme
Puccinia pygmaea Eriksson, Fungi. Paras. Scand. 449. 1895. Puccinia Milii Eriksson, Fungi Paras. Scand. 450. 1895. Dicaeoma Milii Arth. Result. Sci. Congr. Bot. Vienne 344. 1906.
O and I. Pycnia and aecia unknown.
Uredinia chiefiy epiphyllous, numerous, scattered or in elliptic groups on discolored spots, small, elliptic or oblong, 0.3-0.5 mm. long, soon naked, pale cinnamon-brown, ruptured epidermis not conspicuous; paraph yses numerous, intermixed, capitate, 13-21 p. broad above by 42-96 p long or less, the wall variable in thickness, 1.5-4 y, pale-yellow or colorless, smooth; urediniospores broadly ellipsoid or ellipsoid, 19-29 by 21-35 [i wall goldenor cinnamon-brown, thin, 1.5 ix, finely and rather closely echinulate, the pores somewhat indistinct, usually 8,
scattered.