Comprehensive Description
provided by North American Flora
Nigredo amphidyma (Sydow) Arthur
Uromyces amphidymus Sydow, Ann. Myc. 4 : 29. 1906. Uromyces Glyceriae Arth. Bull. Torrey Club 37 : 572. 1910.
O and I. Pycnia and aecia unknown.
Uredinia amphigenous, intercostal, scattered, oval or lens-shaped, small, 0.2-0.4 mm. long, soon naked, pulverulent, brownish-yellow, ruptured epidermis usually inconspicuous ; uredinidspores broadly ellipsoid or globoid, 16-21 by 18-26 ju ; wall pale goldenyellow, 1.5-2/i thick, finely and evenly verrucose-echinulate, the pores 6-8, scattered, distinct.
- bibliographic citation
- Joseph Charles Arthur, Frank Dunn Kern. 1912. (UREDINALES); AECIDIACEAE (continuatio), GYMNOSPORANGIUM. North American flora. vol 7(3). New York Botanical Garden, New York, NY
