Comprehensive Description
(
Inglês
)
fornecido por North American Flora
Nigredo pontederiae (W. Gerard) Arthur
Uromyces Pontederiae W. Gerard, Bull. Torrey Club 6: 31. 1875. Uredo Pontederiae Speg. Anal. Soc. Ci. Argent. 9: 172. 1880. Uromyces Pontederiae Speg. Anal. Soc. Ci. Argent. 26 : 12. 1888.
O and I. Pycnia and aecia unknown. '
Uredinia amphigenous, scattered, on small purplish spots, small, roundish or oval, 0.3-0.5 mm. across, rather tardily naked, light cinnamon-brown, somewhat pulverulent, ruptured epidermis noticeable ; urediniospores ellipsoid, 18-21 by 23-29 i wall goldenbrown, rather thin, l-1.5ju, moderately and sharply echinulate, the pores 4, equatorial, rather obscure.
- citação bibliográfica
- Joseph Charles Arthur, Frank Dunn Kern. 1912. (UREDINALES); AECIDIACEAE (continuatio), GYMNOSPORANGIUM. North American flora. vol 7(3). New York Botanical Garden, New York, NY
