Some rusts of Scirpus and allied genera

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Abstract
Amended descriptions, emphasizing widely neglected aeciospore characters, are given for Puccinia dulichii, P. angustata, P. eriophori var. eriophori and var. apargidii var. nov. (Queen Charlotte Is., British Columbia, on Eriophorum and Apargidium), P. eriophori-alpini,P. congdonii sp. nov. (California, on Scirpus congdonii), P. obtecta,P. osoyoosensis sp. nov. (on Scirpus americanus and S. olneyi), P. liberta, P. fimbristylidis, Uromyces eleocharidis, P. mcclatchieana, U. americanus var. americanus and var. californicus var. nov. (California, on S. californiens), U. lineolatus ssp. lineolatus and ssp. nearcticus ssp. nov. Puccinia angustatoides on Rhynchospora is also discussed because it has been erroneously included in P. angustata.Aecidium ageratinae sp. nov. (on Ageratina spp. = Eupatorium sect. Eximbricata, in eastern North America), and Aecidium eupatorii-rotundifolii sp. nov. (on Eupatorium rotundifolium in southeastern United States) are distinguished from the aecial state of P. eleocharidis. Some aspects of the classification of Scirpus and its allies are briefly discussed in relation to their rusts.

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