Gerwasia pittieriana (Henn.) León-Gall. & Cummins 1981

Micropuccinia pittieriana (P. Henn.) Arthur & Jackson
Puccinia Pittieriana P. Henn. Hedwigia 43: 147. 1904.
Uredo Pittieri P. Henn.; Pittier, PI. Usual. Costa Rica 69, 122, hyponym. 1908.
Pycnia unknown, probabiy not formed

Spirechina pittieriana (P. Henn.) Arthur
Uromyces Pittierianus P. Henn. Hedwigia Beibl. 41 : 101. 1902. Uredo ochraceo-flava P. Henn. Redwigia Beibl. 41 : 101. 1902.
Pycnia epiphyllous, few in crowded groups, soon surrounded by primary uredinia, prominent, honey-yellow becoming golden-brown, subcuticular extending into the epidermal cells beneath, mammilloid, about 145 /^ broad by 80 ;W high.
Uredinia at first (primary) epiphyllous, few surrounding the pycnia, not crowded, groups 1-3 mm. across, sori irregularly roundish, 0.1-0.3 mm. across, at first bullate, ruptured irregularly, pulverulent, dirty-white when old, rupturing epidermis overarching and moderately conspicuous; urediniospores ellipsoid or obovoid, 18-21 by 29-43 /i; wall nearly colorless, rather thick, 3-4//, slightly thicker above, spinosely and sparsely echinulate, more pronounced at apex with spines arranged in a crown sometimes more pronounced at base forming a tuft directed downward, the pores obscure ; secondary form not well shown, probably hypophyllous with small sori.
III. Telia hypophyllous, scattered, often more numerous along the edges of the leaf, small, 0.3-0.8 mm., early naked, pulverulent, white, ruptured epidermis inconspicuous; teliospores fusiform or irregularly cylindroid, 15-21 by 40-75 /i, usually narrowed toward both ends ; wall colorless, uniformly thin, 1 /U or less, smooth ; pedicel colorless, half length of spore or less, 6-8// in diameter.
On Rosaceae :
Rubus adenotrichos^Q^^Kih.t,,Q.os.2.^^2.. „ . _, ^ ^ ^ ^ ^. ,,„.
Type locality : Hacienda Belmira near Santa Maria de Dota, Costa Rica, on ''Rubus sp.," determined by W. O. Focke to be R. adenotrichos.
Distribution : Known only from the type locality.