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Puccinia invelata H. S. Jacks. 1919

Comprehensive Description ( anglais )

fourni par North American Flora
Dicaeoma invelatum (H. S. Jackson) Arthur & Jackson
Puccinia invelata H. S. Jackson; Arth. Bull. Torrey Club 46: 119. 1919.
Pycnia epiphyllous on slightiy raised spots, few, gregarious, inconspicuous, orange, flattened or globoid, 115 by 1 12 m; ostiolar filaments 25-40 fx long.
1. Aecia hypophyllous, scattered, solitary or in groups of two or three, hemispheric, long covered by the epidermis; peridium white, the margin lacerate; peridial cells ellipsoid, 14r-18 by 27-35 /z, overlapping, the wall colorless, 3 ju thick, the outer wall smooth, the inner wall finely and irregularly but rather prominently verrucose; aeciospores ellipsoid, 16-23 by 24r{x wall 1-1.5 {X thick, closely verrucose, with fine low warts
Uredinia hypophyllous, numerous, scattered, roundish, small, 0.2-0.4 mm. across, early naked, somewhat pulverulent, pulvinate, cinnamon-brown, ruptured epidermis not conspicuous; urediniospores globoid, ellipsoid, or obovoid, 20-26 by 24r-29^; wall cinnamonor light chestnutbrown, 1.5-2 m thick, prominently and moderately echinulate, the pores 2, opposite and equatorial with indistinct smooth area surrounding the pores.
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citation bibliographique
Joseph Charles Arthur, Herbert Spencer Jackson, Clayton Roberts Orton. 1921. (UREDINALES); AECIDIACEAE (continuatio); DICAEOMA ON CARDUACEAE; ALLODUS. North American flora. vol 7(6). New York Botanical Garden, New York, NY
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North American Flora