Comprehensive Description
provided by North American Flora
Nigredo major Arthur
Uromyces major Arth. Bull. Torrey Club 38 : 377. 1911. O and I. Pycnia andaecia unknown.
Uredinia amphigenous, scattered, oval or oblong, 0.1-0.2 mm. wide by 0.3-1 mm long, soon naked, cinnamon-brown, somewhatpulverulent, ruptured epidermis noticeable ; urediniospores" broadly ellipsoid, 19-23 by 21-»6m; wall light golden -yellow, moderately thick, 2-2.5 M, strongly and evenly echinulate, the pores 4, equatorial.
- 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
