Comprehensive Description
provided by North American Flora
Nigredo coluteae Arthur
Uromyces Coluteae Arth. Bull. Torrey Club 37 : 574. 1910. O and I. Pycnia and aecia unknown. Uredinia hypophyllous, scattered, roundish, small, 0.2-0.3 mm. in diameter, soon naked, somewhat pulverulent, pale cinnamon-brown, ruptured epidermis conspicuous ; urediniospores broadly ellipsoid or globoid, 18-24 by 21-27 /i ; wall golden-brown, 1.5-2 /x thick, finely and rather closely echinulate, the pores 3, 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
